Introduction of Hydroponic Vegetable Growing Equipment

Brief introduction to the indoor hydroponic system facilities:

1. Nutrition tank

The nutrient solution tank is used to store the nutrient solution. It is generally made of brick and cement and placed in the ground. The specific width of the nutrient tank can be flexibly designed according to the topography of the greenhouse.

2. Seedling equipment

The seedling raising equipment is used for sowing and raising seedlings, and is composed of a seedling tray and a breeding substrate. The nursery trays are mostly made of plastic with a flat bottom and no water leakage. The trays are 60 cm long, 30 cm wide and 3 cm high. Breeding substrates can use hydroponic sponges with large porosity or degradable rock wool blocks.

Hydroponic Sponge

3. Cultivation tank and cultivation board

The cultivation pond is the main site for vegetable growth and the main part of the hydroponic system. Vegetables are planted on cultivation plates and placed in cultivation tanks. The roots of vegetables get water, nutrients and oxygen from the nutrient solution in the pond to meet the physiological needs for normal growth.

Cultivation tanks are generally made of cement, and their shape and size are different according to different types of vegetables. The cultivation tanks for leafy vegetables are generally larger, up to hundreds of meters in length and tens of meters in width. The specific size is According to the area of the greenhouse. The cultivation pond for cultivating fruits and vegetables is generally small, but it is only 3 meters long and 1.5 meters wide. Both types of cultivation tanks are rectangular, and the depth of the tanks is 30 cm. In addition, there are ditch and pipe types in the cultivation tank, but these two cultivation tanks are mostly used for small-scale production and ornamental purposes.

The cultivation board is also called the planting board, which is used to fix the roots of vegetables, prevent the intrusion of dust, block the light from entering, prevent the generation of algae and keep the temperature of the nutrient solution in the cultivation tank stable. The cultivation board is generally made of polystyrene board. According to the types of vegetables and the needs of different growth periods, its specifications and sizes are also different. Generally, the length is 80 to 100 cm, the width is 50 to 70 cm, and the thickness is 3 cm. Arrangement of planting holes with a diameter of 3 cm can be divided into 288-well plate, 99-hole plate, 72-hole plate, 24-hole plate, 18-hole plate, 6-hole plate, etc.

4. Liquid addition, drainage system and nutrient solution circulation system

The liquid supply of hydroponic facilities is generally pumped by the water pump into the cultivation tank. The tank maintains a water level of 5 to 8 cm deep, and the facility for adding liquid to the cultivation tank is composed of an iron or plastic liquid addition main pipe and a plastic liquid addition branch pipe.

The nutrient solution is drawn from the nutrient solution tank by a water pump, enters the cultivation tank through the liquid addition main pipe and the liquid addition branch pipe, and is absorbed by the roots of the vegetables. The nutrient solution higher than the liquid discharge port flows back to the nutrient solution tank through the liquid discharge channel along the liquid discharge port, thereby completing a cycle.

Hydroponic cultivation is bound to work, which shows that vegetables can not only be hydroponic, but also more efficient, high-yield and high-quality than soil cultivation.

How to Grow Hydroponic Vegetables?

Leafy vegetables use stems and leaves as materials, and can even be eaten raw, which has certain requirements for the freshness, cleanness and pollution-free of vegetables. And hydroponic leafy vegetables are cleaner, taste better, and nutritious. Therefore, most leafy vegetables can be grown by hydroponics.

Although leafy vegetables are not easy to store, in order to meet market demand, they need to be produced continuously every year. Hydroponic leafy vegetables can be sown, planted, harvested and continuously produced every day, which is the advantage of hydroponic cultivation.

Hydroponic vegetables also have a great advantage, that is, the short growth cycle of hydroponic vegetables requires only one nutrient solution from planting to harvest, without replacement in the middle. The cultivation and cultivation of hydroponic vegetables is carried out in a greenhouse. In order to ensure the healthy growth of vegetables, greenhouses are generally equipped with light adjustment facilities, that is, greenhouse plant fill lights, ventilation facilities, and temperature and humidity adjustment facilities. In summer, there are anti-insect plates to prevent pests from occurring.

Hydroponic facilities generally consist of nutrient tanks, nursery equipment, cultivation tanks and cultivation plates, liquid addition systems, drainage systems, and circulation systems.

Chlorophyll in vegetables can help the body detoxify and digest and absorb nutrients. A variety of delicious meat-assisted vegetable dishes have also become a favorite with many people. However, vegetables can be grown not only in the soil, but also in the water. Recently, it has become more and more popular to grow vegetables and fruits indoors, at home, on balconies. People become happy.

Many people will ask "Is it convenient to grow vegetables in hydroponic cultivation at home?" "Is the crop not grown in the soil healthy?" For example, the greenhouse manufacturer will answer the question: In fact, due to weather, temperature, and pest problems Agricultural experts started to think about it very early, and found that hydroponic cultivation can work, planting plants indoors can ensure that the plants are at a comfortable temperature, and the plant fill light can make the photosynthesis of plants get the best care. , The quality at such maturity is almost excellent. Hydroponics can protect plants from insect pests and the influence of soil quality and surrounding water quality. In general, the area and growth time of hydroponic cultivation have been reduced, the quality of production has been improved, and management has also become convenient. This reform has also made many agriculture modern.

 Hydroponic Sponge

The benefits of indoor hydroponic culture are clean. The hydroponic container is turned over and you only need to drag the clean water. It is also very convenient to take care of it. Unlike the soil cultivation, it does not require cumbersome care such as weeding, medicine, and loosening . Hydroponics only has water and nutrient solution, but it does not have those soil diseases. Although there will be problems with mosquito breeding in the water, as long as the mosquitoes are not allowed to come into contact with the surface of the water, it is naturally not a problem to protect them with hydroponic sponge.

There is no doubt about the health of hydroponic vegetables, because the elements of nutrient solution and fertilizer are the same, and the amount of nutrient solution used in the hydroponic system is also configured, so the grown vegetables will only compare with the soil. The vegetables grown are only strong. Seeing if everyone is here, you can grow vegetables at home to cultivate your temperament, and you can also eat what you grow. Under the decoration of plants, the room will become more close to nature. This kind of life is desirable.

There are many vegetables suitable for hydroponics, and tomato is one of them. Tomatoes are fruits and vegetables. Since most fruits and vegetables have a relatively long growth cycle, a growth cycle of about one year, and the nutrient solution is updated frequently during the period from planting to harvest, it is not suitable for hydroponic cultivation.

But tomatoes are not the same. Fruits and vegetables are mainly dominated by tomatoes. The most common is the hydroponic cultivation of tomato trees. Its characteristics are: strong disease resistance, which can be cultivated for long seasons; the flesh is hard, the peel is thick, and it is not easy to split the fruit; the plant grows vigorously, and the ability to bear fruit is strong; the adaptability to environmental conditions is strong, to high temperatures, low temperatures, and low light All have certain resistance.

Tomato trees are generally about 2.5 meters high, so the greenhouse required for tomato trees is relatively tall. Tomato is a herbaceous plant, and its stem is semi-vine, not like a tree, it needs a support to support the stem, leaves and fruits. Light is an important environmental factor that affects the flowering and fruit setting of tomatoes. Low light often causes flowers to fall. Therefore, it is necessary to install some plant fill lights in the greenhouse to fill the plants, so that the fill light can shorten the growth cycle of the tomatoes and improve the quality of the harvest. Cultivation ponds for tomato cultivation, also known as hydroponic beds, are containers for the growth of the roots of tomato trees. Cement ponds with a length of 3 meters, a width of 1.5 meters, and a depth of 30 cm are usually used. The surface of the hydroponic bed needs to be covered with a white foam board to provide a dark growth environment for the root system and prevent the growth of moss. There should be a water supply pipe above the hydroponic bed and a liquid return hole at the bottom of the bed to facilitate the circulation of nutrient solution. In addition, there should also be an oxygenation device, including an inflation pump and an inflation tube, whose function is to supplement the nutrient solution in the hydroponic bed with oxygen.

How to Achieve Indoor Heat Preservation Effect of Glass Greenhouse Greenhouse?

1. Generally, some agricultural glass greenhouse installations can be used for heat preservation, such as covering with plastic film, buckling small arch shed, and movable curtain surface.

2. It is often added multiple layers of grass torch (curtain) on the inner side of the large surrounding so that it is both windproof and thermally insulating.

3. Generally, fluorescent lamps can also be installed in the greenhouse, generally (the lamp and the plant leaves adhere to an interval of 50cm), usually shining 10-12 hours of light every day.

4. However, in the working room set at one end of the greenhouse, thick curtains are often hung at the entrance and exit to prevent the intrusion of cool wind.

5. It is also possible to use a non-drip film for a masking effect.

Agricultural Glass Greenhouse

Compared with ordinary film greenhouses, glass greenhouses are smarter and more convenient to use. They are a modern farming environment integrating data collection, central accounting and active equipment control. So what are the advantages of greenhouse cultivation? China glass greenhouse manufacturer shares for you:

During the operation of the glass greenhouse, the greenhouse environment is actively controlled to ensure the growth of crops.

1. The loss of planted crops is almost zero: Compared with manual monitoring, the obvious advantage of glass greenhouses for planting is to ensure stable environmental conditions in glass greenhouses, which have relatively high environmental requirements. For plants, it may be useful to avoid production losses due to human factors.

2. The quantity and quality of products that can be flexibly improved: Choose the control method of the glass greenhouse to ensure the environment. Compared with the manually controlled greenhouse, the output value and quality of the crop are greatly improved.

3. Saving and efficiency: For breeding enterprises with certain plans, it is necessary to continue to improve the efficiency of agricultural planting, not only to improve the output value and quality of crops, but also to improve operating efficiency and reduce operating costs. After using the intelligent control of the glass greenhouse, it can also play a role in these two aspects. After the glass greenhouse monitoring system is adopted, the operating efficiency is significantly improved, and the labour cost is greatly reduced. The investment and operation of the glass greenhouse can be fully calculated from the saved labour cost, using the intelligent economic benefits of the greenhouse control system. This is a long time, and the longer it is used, the lower the labor cost.

Greenhouses will have a great impact on crops. Greenhouse manufacturers have found that they will also have a great impact on crops in greenhouses. Plants are very sensitive to high temperatures. Photosynthesis will be reduced when the crops encounter high temperatures, and breathing at night will be improved The energy consumed is relatively high, which greatly consumes the growth of crops. For example, just like tomatoes, tomatoes of different brands have slightly decreased after photosynthesis under high-temperature treatment, so the content of chlorophyll will also be different.

The above is an introduction to the advantages of agricultural glass greenhouse cultivation, and I hope to help you.

How to Achieve the Greenhouse Temperature Management

In the production of the agricultural greenhouse, keeping the temperature in the shed is the basic condition to keep the crops growing well.

Generally speaking, the temperature inside the shed can vary with the temperature outside. The change rule is, the higher the temperature outside the shed, the greater the temperature value inside the shed, and the lower the temperature outside the shed, the smaller the value-added inside the shed. In general, the maximum and minimum temperatures in the shed occur about two hours later than on land.

The temperature in the shed often varies with the weather and the seasons. Users can add a series of protective measures according to the change of greenhouse temperature to keep the temperature constant. The temperature difference is larger on sunny days and smaller on rainy days. The lower the temperature, the higher the daily temperature, and vice versa. In addition, users can also according to the early cultivation of vegetable varieties suitable growth temperature requirements to strengthen the temperature regulation in the shed.

At the same time, different crops have different temperature requirements. Users can adjust according to realistic conditions and crop requirements. For example, there is usually no ventilation before planting seedlings after transplanting. It is used to raise the temperature in the shed, which is conducive to the growth of crops. Not only that, but the user also according to the seasonal conditions for adjustment, early spring due to weak light, but the effect of temperature increase in the shed is also poor, can be used to cover plastic film and small arch shed measures, to improve the effect of heat preservation.

Agricultural Greenhouse

Here's how the greenhouse dehumidification problem can be solved by the planting greenhouse installation company: Water is the main factor leading to indoor humidity increase, so how to water has become an important measure to control the humidity. Winter and spring production can choose clear ditch water or water plants, dark irrigation under plastic film mulching film can be used. Water shall strictly control the water quantity, to prevent the indoor humidity is too high. The outer membrane well prevents the loss of carbon dioxide produced by internal vegetable growth, make the huts have a good heat preservation effect.

After each watering appropriate wind, timely mattock soil can reduce the soil moisture, also can reduce the air humidity. Water is the main factor leading to indoor humidity increase, so how to water has become an important measure to control the humidity. Winter and spring production can choose clear ditch water or water plants, dark irrigation under plastic film mulching film can be used. Water shall strictly control the water quantity, to prevent the indoor humidity is too high. After each watering proper lookout, in a timely manner HuaChu scarification, can reduce the soil moisture, can also reduce the humidity of the air. The greenhouse is one kind has excellent thermal insulation performance of the effect of the frame structure, it makes people can eat the anti-season vegetables. General greenhouses use bamboo structure or the steel structure of the skeleton, above a layer or multilayer insulation plastic compound, This creates a greenhouse space.

How Does the Disease Insect in Hothouse Kill Effectively?

The vegetables grown in the greenhouse grow year by year, and this environment provides a suitable place for diseases and insect pests to survive the winter. In the face of the characteristics of many diseases and insect pests, fast spread and heavy harm, which have a great impact on vegetable production, it also has a great impact on the output. Therefore, the vegetable Greenhouse manufacturer will introduce three effective measures for you:

(a) high temperature stuffy shed

Before planting Vegetables, cover the canopy with a canopy membrane and close the closed canopy for 7 to 10 days on a sunny day to raise the temperature of china glass greenhouse for vegetables above 60 ℃. In this way, the bacteria and spores and eggs on the soil surface and walls can be killed, which will reduce the source of infection during the growth of Vegetables. When be in high temperature and frowning shed, press every cubic metre shed space USES the object that sulphur powder 3 grams, sawdust 5 grams, dichlorvins smoke agent 1 gram to mix equably next rise, dark fire is ignited, airtight smoke is smoked, the effect is better, but after fumigation should be put out wind 2 to 3 days, reprepare the ground is planted.

China Glass Greenhouse For Vegetables

(2) Seed treatment

Diseases and insects are often lurking or mixed on the seeds and seedlings of vegetables. Careful treatment of the seeds before sowing can kill some diseases and insects. Common treatment methods include soaking seeds in warm soup and treating chemicals. 1. Soaking seeds in warm soup is generally soaked in warm water at 50°C to 60°C for 5 to 15 minutes. Stirring should be kept during soaking to make the seeds evenly heated; 2. The agent treatment can use 0.1% copper sulfate, 0.1% potassium permanganate or 300 Formaldehyde can be used for seed soaking, and the seed can be mixed with 50% carbendazim wettable powder in the amount of 0.3% to 0.4%.

(3) Disinfection of soil chemicals

Before sowing or planting, disinfecting the soil in the planting greenhouse can kill germs or eggs in the soil, and prevent or reduce the harm of pests in the growing season of vegetables. When sterilizing the soil, the pesticides can be selected according to the occurrence of diseases and insect pests throughout the year. Mix the medicament with an appropriate amount of fine dry soil, evenly spread it on the ground, and then plough into the soil. One-third is spread on the seedbed, and two-thirds is spread on the seed after sowing, that is, the lower cover is covered, which has obvious control effect on vegetable seedlings diseases and insect pests, but pay attention to keep the surface soil of the bed surface moist to avoid damage.

These are some effective measures for when we have pests. Let ’s follow them. I believe everyone has a headache for pests. So when we are planting, we must ensure that no matter what step is used, we can reduce the invasion of pests. Our plants grown.

Management Measures of Greenhouse Vegetables in Early Summer

With the arrival of summer, the winter and spring stubble vegetables in the greenhouse have entered the late growth stage, and the over-summer stubble vegetables have entered the early planting period. How to formulate corresponding management measures? China Glass Greenhouse manufacturer: china glass greenhouse manufacturer to share with you:

(1) Strengthen fertilizer and water

After the beginning of summer, most of the stubble vegetables in winter and spring have entered the later stage of growth, and it is inevitable that the plants will decline. At this time, management should be strengthened to maximize the benefits. It can start strengthening management from two aspects of leaf maintenance and root protection, and spray the leaves with full nutrients every 7-10 days to supply the nutrients needed for vegetable growth in time. Fertilizer can not only be used for high nitrogen fertilizer, but can be applied by Fangrun, or by potassium sulfate compound fertilizer combined with compound microbial bacterial fertilizer, so as to achieve the purpose of strengthening roots and promoting fruit yield.

Farming Greenhouse

(2) Strictly prevent diseases and insects

As winter and spring stubble vegetables, pest control cannot be relaxed, because if allowed to develop, it will not only reduce the yield and effect of the stubble vegetables, but also increase the number of pathogens in china glass greenhouse for vegetables Stubble crop production. For example, tomato leaf mildew can be controlled by spraying with pesticides such as Garenone or Shigao, and it must be sprayed strictly; for example, bacterial diseases can be controlled by copper preparation or streptomycin. With the increase of temperature, virus diseases and insect pests have become an important obstacle for winter and spring stubble vegetables and over-summer vegetables, so they must be strictly controlled.

(3) Reasonable temperature control

For the winter warm greenhouse, when the minimum temperature is stable above 15 ℃, the grass curtain should be removed in time or no longer covered at night, so as to avoid excessive night temperature and excessive consumption of nutrients, resulting in poor flowering and fruit setting. As the temperature continues to rise, the head wind should increase the amount and time of ventilation. When the top wind is difficult to control the temperature increase in the shed, the vents at the front face are pulled apart, and appropriate sunshade and cooling measures are taken to ensure the normal growth of crops. For the arch shed, the following methods can be adopted according to the actual situation to achieve the purpose of regulating the shed environment, which is conducive to the growth of vegetables: First, the plastic film is still used for the top film, and the skirt film is removed. In this way, the top film is used to cover the rain, and the lower position is ventilated and permeable. Second, the plastic film is still used for the top film, and the skirt film is removed to cover the insect-proof net. In this way, the top film is used to cover the rain, which can isolate pests and prevent pests from harming the vegetables in the shed, but the ventilation and moisture permeability in the shed are poor, and high temperature or high humidity are prone to occur. The third is to remove the skirt film, keep the plastic top film, and cover the sunshade net. This method is often used for the production and seedling of over-summer vegetables.

(4) Cultivate strong trees

The temperature is high and the plant is prone to grow long. In addition to the management of the farming greenhouse environment, it is necessary to pay attention to the control of soil and watering to cultivate a strong root system. During planting, roots can be used to apply root anti-dead biological fungus fertilizer, 80-120 kg per mu, which can not only effectively inhibit the occurrence of root diseases, but also promote rooting and inhibit the growth, which is conducive to the cultivation of strong trees . After planting the delayed seedlings, control watering and timely plowing and hoeing to loosen the soil, enhance soil permeability, and promote root development.

How to Achieve Indoor Heat Preservation Effect of Glass Greenhouse Greenhouse?

1. Generally, it is possible to adopt the cover of mulch film, as well as some multi-layer cover methods such as the deduction of small arch sheds, and movable curtain surfaces for heat insulation.

2. Many layers of grasshoppers (curtains) are often continuously added on the inside of the large perimeter so that it is not only windproof but also heat-preserving.

3. Generally, it is also possible to install fluorescent lamps in the greenhouse, generally (the lamp and the plant leaves adhere to an interval of 50cm), and it is usually enough to illuminate the light for 10-12 hours every day.

4. However, at the one end of the greenhouse, thick curtains are often hung at the entrance and exit of the greenhouse to prevent the intrusion of cool wind.

5. A masking effect can also be performed with a drip-free film.

Intelligent Greenhouse

Compared with ordinary thin film greenhouses, smart greenhouses are smarter and more convenient to use. They are a modern farming environment that integrates data collection, central accounting, and equipment active control. So what are the advantages of Intelligent greenhouse cultivation? The greenhouse manufacturer analyzes it for you.

During the operation of the smart greenhouse, the management personnel enters the data and control parameters required for crop cultivation into the computer. The smart greenhouse can complete unmanned operations, actively control the greenhouse environment, and ensure crop growth.

During the operation of the smart greenhouse, the management personnel enters the data and control parameters required for crop cultivation into the computer. The smart greenhouse can complete unmanned operations, actively control the greenhouse environment, and ensure crop growth.

1. The loss of planted crops is almost zero: compared with manual monitoring, smart greenhouses are used for planting. The obvious advantage is to ensure stable environmental conditions in the smart greenhouse, which has relatively high environmental requirements. For plants, it may be useful to avoid production losses due to human factors.

2. The quantity and quality of products that can be flexibly improved: The intelligent greenhousecontrol method is selected to ensure the environment. Compared with artificially controlled greenhouses, the output value and quality of crops are greatly improved.

3. Savings and efficiency: For breeding enterprises with certain plans, it is necessary to continue to improve the benefits of agricultural cultivation, not only to improve the output value and quality of crops but also to improve operating efficiency and reduce operating costs. After adopting intelligent control in intelligent greenhouses, it can also play a role in these two aspects. After adopting the intelligent greenhouse monitoring system, the operating efficiency is significantly improved, and the labor cost is greatly reduced. The investment and operation of the intelligent greenhouse can be fully calculated from the saved labor costs, and the intelligent economic benefits of the greenhouse control system are used. This is a long time, and the longer it is used, the lower the labor cost.

Greenhouses have a great impact on crops. Greenhouse manufacturers have found that they also have a great impact on greenhouse crops. Plants are very sensitive to high temperatures. Crops will experience lower photosynthesis when exposed to high temperatures, and their respiration will increase at night The energy consumed is relatively high, which greatly consumes the growth of the crop. Greenhouse manufacturers give an example. Just like tomatoes, photosynthesis of different brands of tomatoes has decreased slightly under high-temperature treatment, so the content of chlorophyll will also be different.

The above is the introduction of the advantages of smart greenhouse cultivation, I hope to help everyone. Xinghua JinYi Greenhouse Equipment Co., Ltd. is a high-tech enterprise integrating greenhouse research, design and manufacturing. We believe that with your support, we believe that we can meet every challenge and look forward to creating a new starting point for you to win-win with your business, and quickly embark on the road of mature development.

Which Several Respects Should the Market Research Before Greenhouse Construction Proceed with?

I. Determination of agricultural products

Farming greenhouse is used to produce high-quality, high-yield, high-value-added agricultural products such as off-season. Under market economic conditions, market demand is a process of investigation and research. First look for market demand and determine the local or domestic and international market varieties. If the product is supplied to the local market, the local dietary habits need to be considered to determine the products to be grown.

The information returned from the current aspects shows that the cultivation of special, rare, and precious green vegetables is currently selling well in the domestic and international markets. Some do not need to establish high-end greenhouses for planting, and it is still possible to use local solar greenhouses Get considerable profits. For the cultivation of common vegetables, the local market is the main, and it should be carried out in a simple greenhouse. The planting costs cannot be increased at will, resulting in no market for the products.

Investment in greenhouse cultivation is risky. There is a certain time difference between the greenhouse cultivation and the market. Once the product positioning is not appropriate, the greenhouse construction project is likely to fail halfway.

Single Span Plastic Film Greenhouse

Second, the positioning of the greenhouse-greenhouse project

The market is changing, and the greenhouse is a fixed asset investment with relative stability. The purpose of building a greenhouse needs to be redefined. The construction of greenhouses in China started relatively late, and different regions have different levels of understanding of greenhouses.

At present, the construction of many greenhouses is at the stage of government guidance and support, with demonstration as the mainstay, social and environmental benefits are relatively prominent, and economic benefits are not ideal, and there are certain comprehensive benefits.

For demonstration greenhouses, high-tech, high-input, and high-output are the characteristics of this type of greenhouse. The greenhouses and planting methods with new structures and materials at home and abroad should be adopted. The products produced should be oriented to the national and international markets. Considering the social and environmental benefits, in particular, there must be significant economic benefits, at least the role of a greenhouse leader in the local area, otherwise, the demonstration fails.

For ordinary planting greenhouses, as long as they can meet production needs, the form of the greenhouse is not important. The single span plastic film greenhouse has a simple structure, can meet the growing needs of most vegetables, fruits, and fruits, and is easy to operate, which is conducive to popularization. For high-end fully-automatic control greenhouses, it is currently inappropriate for most planting and breeding, high cost, complicated system, high operating costs, and requires special maintenance. Operators are required to have a high level of technology, which is suitable for scientific research and high value-added agricultural products. Production use.

Analysis of the Problems in Greenhouse Construction?

In recent years, the construction of farming greenhouses has gradually increased. However, when building greenhouses in some areas, they often ignore the local natural conditions, resulting in many problems, not only shortening the life and practicality of the greenhouses, but also reducing the yield and quality of vegetables, resulting in unintended Economic losses. Therefore, the farming greenhouse installation company takes the issues that are prone to occur in the construction of greenhouses, to remind vegetable farmers everywhere to avoid such problems.

1. Too little space between the two greenhouses will affect the light. Vegetables suffer from "cold disorders" due to low temperatures. At the same time, due to lack of light, the growth of vegetables could not perform photosynthesis normally, which led to "fat and yellow muscles" and even "hunger" and died.

2. Lack of drainage system. In the season with heavy rainfall, it is easy to cause the greenhouse to collapse or cause the roots and dead trees of vegetables and other plants to grow, resulting in huge economic losses.

3. No protective measures are taken on the back wall of the greenhouse, which can easily shorten the useful life of the greenhouse.

4. The pillars in the last two rows of the greenhouse are too far away and the pressure is too small. To build a greenhouse, steel pipes are used as the skeleton. The taller pillars in the greenhouse are 5.8 meters (60 cm below the ground). Wall height of about 4.5 meters.

Farming Greenhouses

5. Digging deep inside the greenhouse is not conducive to the growth of vegetables. It is more appropriate to dig 0.5-1. 2 meters in the greenhouse. During the construction of the greenhouse, it must be emphasized that the soil for the wall must also be excavated from the ground in front of the greenhouse, and the depth of the excavation depends on the situation, which is generally more than 0.5 meters. Building a greenhouse in this way can make the front face of the greenhouse only have a depth of less than 0.6 meters, reduce the area of the shading belt, and improve the insulation performance of the greenhouse.

6. When the greenhouse is used to build the wall of the mature soil in the greenhouse, the exposed surface is a layer of raw soil with low organic matter content, lack of beneficial microorganisms and poor air permeability. If it is not modified, the growth of vegetables in the season will be affected , Resulting in huge economic losses.

7. In building greenhouses, we must always adhere to the "measures according to local conditions" approach. For example, in some areas with shallow tillage levels and low groundwater levels, it is necessary to avoid the construction of "semi-underground" greenhouses, and no "cellar" greenhouses should appear. The depth of excavation should be minimized or a greenhouse should be built directly on the ground.

The Structure of the Glass Greenhouse

Glass greenhouse structure mainly includes greenhouse foundation, greenhouse steel structure and aluminum alloy structure.

1. Foundation classification: commercial glass greenhouse foundation is divided into two types of independent column foundation and strip foundation. Independent foundations can be used for inner or side pillars, and strip foundations are mainly used for side walls and inner partition walls.

2. Design requirements: Before the foundation is designed, the geological data of the construction site should be carefully analyzed. First, the site geological survey report (for important large-scale greenhouse projects); second, construction site testing (for general projects) The third is based on experience and reference geological data of nearby projects (for small projects). In foundation design, in addition to meeting the strength requirements, it should also have sufficient stability and ability to resist uneven settlement. The foundation connected to the support between columns should also have sufficient horizontal force transmission and spatial stability.

The bottom of the greenhouse should be located below the frozen soil layer. The heating greenhouse can consider the impact of heating on the freezing depth of the foundation according to the climate and soil conditions. Generally, the bottom of the foundation should be more than 0.5 meters below the outdoor ground, and the distance between the top of the foundation and the outdoor ground should be greater than 0.1 meters to prevent the foundation from being exposed and adversely affecting cultivation. Except for special requirements, the distance between the top surface of the greenhouse foundation and the indoor floor should be greater than 0.4 meters. The embedded parts connected to the steel structure of the greenhouse are set on the top of the foundation. The design of the embedded parts is also an important part of the foundation design. The connection methods of the embedded parts and the superstructure mainly include hinge, consolidation and elastic connection.Depending on the connection method, the design and construction methods are different, but all embedded parts must ensure a good connection with the foundation and ensure that the superstructure is transferred. The incoming force is correctly transmitted to the foundation.

3. Basic materials and construction characteristics

(1) Independent foundation. Reinforced concrete is usually used. In terms of construction methods, the independent foundation can be divided into two methods: full cast and partial cast. All-in-situ pouring is carried out by using the construction site supporting mold and integral pouring method; part of the in-situ pouring method is carried out by using the method of prefabricated short columns and on-site pouring of the foundation cushion. Two methods can be chosen according to the specific situation. The cast-in-place method has the characteristics of good integrity and low cost; some cast-in-place methods have higher cost but faster construction speed and easier construction quality.

(2) Strip foundation. Masonry structures (bricks and stones) are usually used, and construction is also carried out on site. A reinforced concrete ring beam is often installed on the top of the foundation to install embedded parts and increase the stiffness of the foundation. In addition, the side wall foundation can also use a combination of independent foundations and strip foundations.The bottom of the two types of foundations can be located at the same elevation, or they can be set at different elevations according to the bearing capacity and function; the independent foundation undertakes the bottom of the greenhouse In the case of forces, the strip foundation is only used as part of the separating element. (3) Precautions for foundation construction. During the construction of the foundation, the column height and the axis position must be ensured to be correct. Equipment, pipeline openings and installations must be buried in time. It is forbidden to dig after construction to damage the foundation.

 Planting Greenhouse

Steel structure

1. Steel structure content: It mainly includes support, connection parts, and solid parts for the bearing structure of the planting greenhouse and the structural stability. 2. Materials and Precautions for Construction Steel materials are mainly cold-formed thin-walled steel and hot-rolled steel. Except for a few components, high-strength steel is used, and the rest of the steel is A3F. Glass greenhouse steel framework is generally produced by specialized factories. Because the greenhouse components are in the indoor high humidity environment for a long time, all structural components should be treated with anticorrosion. It is usually treated by hot-dip galvanizing. In order to ensure the effect of anticorrosive treatment, all components should be anticorrosive after processing. It is not allowed to cut, saw, and weld the greenhouse components on the spot. If there is a small amount of on-site operations, it is also necessary to perform anti-corrosion treatment, spray anti-corrosion paint on the processing or wound. The installation of the skeleton should be carried out in strict accordance with the drawings and relevant standards, specifications and regulations.

3. Design considerations: vegetables greenhouse manufacturers must consider structural strength, structural rigidity, structural integrity, and structural durability in their design.

2. Aluminum alloy

1. Function: Aluminum alloy is used as the main inlay and cover support member of glass greenhouse. Its main functions are: (1) cooperate with rubber seals as a part of the glass greenhouse cover sealing system; (2) use alone, as a greenhouse roof support Components and sealing components; (3) used as a gutter.

2. Design requirements: The main part mainly meets the requirements of strength and rigidity; the support part as the support of the glass is mainly reserved for some long-length support grooves or inlaid grooves; the inlaid part located outside the glass must be provided with special rubber Sealed grooves can be used to fix rubber seals, and can also be used with small aluminum or stainless steel parts to fix glass.

Four Points to Note When Building a Greenhouse

Farmer friends need to pay attention to the following four points when constructing greenhouses:

(I) Lack of drainage system in rainy season

Many farmers did not consider the problem of drainage in the shed when they built the shed, and there was no precautionary measure, so that during the heavy rain in summer, the rainwater left on the shed surface was collected at the "front face" of the shed, and there was no local flow. Not leaving, even the phenomenon of the front of the greenhouse being washed out. The correct method is to dig a drainage ditch from the front of the shed to the same length as the greenhouse. The drainage ditch is about half a meter wide and about 30 centimeters deep. So that the water left on the greenhouse surface can flow away at any time to prevent water from flowing into the greenhouse.

(2) The distance between the two columns in the back row is too large

Between the last two rows of columns in the greenhouse, the roof part of the roof is often the part where the rolled straw curtain and roller shutter machine are parked. This part can be said to be under the pressure, which often makes the Skeleton deformation. The distance between the two rows of columns should be as small as possible, and it should be about 80 centimeters. Only one cement trench and sidewalk running in the middle can be built in the middle.

(3) Too little space between the two sheds

In order to save land for some farmers, the distance between the two sheds is too narrow, and some are only about 2 meters, leaving hidden dangers in the greenhouse. In winter, the front greenhouse is too shaded to the back, which makes the first half of the greenhouse unfavorable for vegetable growth. Secondly, the harm to drainage is greater. When it snows in winter, it may not be piled up in front of the snow removal shed. Therefore, the correct distance of the open space between the two sheds is preferably 4-5 meters, so that they can not shade each other, but can also be windproof.

(4) Lack of protection measures for the backslope

Some farmer friends have no covering facilities at this part of the back slope, so that they are often washed away by rain in summer, which affects the useful life of the greenhouse. Although some shacks are covered with a layer of plastic cloth on the back slope, they are often exposed to the wind and sun, and the back slope is exposed again within a year. Therefore, a layer of plastic cloth should be wrapped on the back slope of the greenhouse, and then a layer of non-woven cloth should be coated on the outer bread. Use a steel wire every 10 meters or so to ensure that there will be no major problems for about five years.

Agricultural Greenhouse Plastic Film

Matters needing attention when changing the film in the greenhouse construction:

1. Bamboo poles in greenhouses must withstand the weight of grasshoppers. When the snow is heavy, the bearing capacity will increase greatly, which will cause some bamboos to be crushed or broken. Such bamboo poles must be maintained or replaced in time. For the bamboo rod that has been crushed, you can remove it and replace it, or attach another one beside the broken bamboo rod. The original broken part is wrapped with a cloth strip to prevent puncturing the shed film. The bamboo poles that can be used only after the crack appears, can be wrapped with a cloth strip.

2. Vegetable greenhouse construction The bottom of the steel wire on the gable wall is used to pad used car tires or soles, etc., to increase the area under which the steel wire is stressed, and to prevent the steel wire from getting into the gable.

3. The glass greenhouse for vegetables is constructed with rags, rubber pipes, PVC pipes, etc. on the shed surface and the front corner, or plastic hoses are placed on the laminated rope to avoid the laminated rope and the shed. The film is in direct contact, which reduces the friction between the pressing rope and the shed film, and slows down the wear rate of the shed film.

4. The construction of vegetable greenhouses should shorten the time from the removal of the old film to the replacement of the new film. At present, vegetable farmers are multiple partners to help each other change the film. The bamboo rods to be replaced can be prepared in advance. The new film can be raked in front of the shed, and then the old film can be removed. Overlay, thus shortening the film changing time.

5. Poor quality membranes and old membranes in vegetable greenhouses are not good in defogging and dripping in winter, and dew is easy to produce when air is released, which results in high air humidity in the greenhouses, which is not conducive to disease prevention. It is recommended that the agricultural greenhouse plastic film be replaced once a year, and replaced with a film of better quality and strong anti-fogging and dripping properties.

The Quality of Greenhouses Is The Core of Market Competition!

Features of insulating glass in greenhouses: The periphery of the greenhouse is made of insulating glass. It is an excellent product. It plays the same role as the skin in the greenhouse system. Generally speaking, the insulating glass of the greenhouse is composed of two or more pieces, and the periphery is sealed.

With the advancement of skills, greenhouse gas emission rights are normal, and the results of vacuum glass thermal insulation, sound insulation and noise reduction are getting better and better, and the glass's own mass has decreased, but the load capacity has increased. Insulating glass, with its excellent features of dew condensation prevention, energy-saving insulation, sound insulation and noise reduction, China's greenhouse project has taken it to the next level, walking in front of the world's greenhouses. So what are the characteristics of insulating glass in greenhouses? How to correctly understand the importance of the greenhouse skeleton! vegetables greenhouse manufacturer share with you:

First, the selection of insulating glass is very good. The use of flexible sealing material as the material can reduce the shear force in the sealing area of the glass plate in the case of large temperature difference between the surface and the room, and overcome the failure of the brittle sealing material in the same environment. In this way, the loopholes of the greenhouse's own loss of achievements in many types of severe conditions have been eliminated.

Agricultural Glass Greenhouse

Second, the hollow glass has a high vacuum inner cavity. This is the feature that distinguishes it from other glasses. Negative gas heat transfer almost does not exist. It greatly prohibits the heat transfer of radioactive materials and ensures the heat transfer of glass. The insulation and insulation of the insulating glass in the greenhouse is twice as high as that of ordinary glass, which can satisfy the requirements for heat transfer and cooling of doors and windows.

Third, agricultural glass greenhouse selects low temperature sealing skills. On the one hand, it has the characteristics of toughened glass and resistance to attack. On the one hand, its force is well-balanced, and it will not cause damage due to collision and other reasons. It will increase the service life and is the first choice for building greenhouses. Although the insulating glass of the greenhouse can also cut off the noise and ensure the normal production of employees, in order to ensure the energy saving benefits, greening and environmental protection, choosing the growth mode of the greenhouse is the main choice for building greenhouses.

What are the factors affecting greenhouse durability?

The durability of the greenhouse is affected by the aging resistance of the greenhouse material and the bearing capacity of the main structure of the greenhouse. Multi-span greenhouse is a kind of better existence of greenhouse, in fact, it is a kind of large greenhouse. It connects the original single-room greenhouse with scientific methods, reasonable design and excellent materials to connect the original single-room greenhouse. Compared with traditional greenhouses, greenhouses and greenhouses in the form of multi-story greenhouses are a bright spot compared to traditional greenhouses, and their utilization area is much larger than traditional greenhouses. Compared with traditional greenhouses, the management is more unified, the operation is more scientific, saves time, and increases efficiency. In addition to the strength of the transparent material, in addition to its strength, it also shows that the light transmittance of the material decreases due to time, and the degree of attenuation of the light transmittance is a decisive factor affecting the service life of the transparent material. Due to the long-term operation of the greenhouse in high-temperature and high-humidity environments, the surface corrosion of components has become one of the important factors affecting the service life of the greenhouse. In greenhouse steel structures, thin-walled steel is generally used as the main stress member, and its corrosion resistance is poor. Greenhouse anticorrosive treatment uses hot-dip galvanized surface. For greenhouses with wooden or steel welded truss structures, surface anti-corrosion treatment is guaranteed once a year.

The waste heat in the equipment is discharged to keep the indoor ambient temperature within a range suitable for plant growth. The discharge of residual humidity is to keep the relative humidity of the indoor environment within a range suitable for plant growth. Adjust the air composition, reduce harmful gases, increase the CO2 content in the indoor air, and make the crop grow well.

Due to the long-term operation of the greenhouse in high-temperature and high-humidity environments, surface corrosion of components has become one of the important factors affecting the service life of the greenhouse. With the development of vegetable greenhouses in recent years, greenhouses have provided a driving force for agricultural development. Greenhouse control generally consists of three parts: signal acquisition system, computer and control system. In greenhouse steel structures, thin-walled steel is generally used as the main stress member, and its corrosion resistance is poor. Greenhouse anti-corrosion treatment should use hot-dip galvanized surface. The coating thickness reaches 150-200 microns, which can guarantee a 15-year service life. For greenhouses with wooden or steel welded truss structures, the surface of the greenhouse is protected from corrosion once a year.

Development Prospects of Greenhouse Ventilation

The popularity of automatic ventilation pillarless environmental protection greenhouses is the primary development trend of greenhouse ventilation development. This greenhouse is composed of plastic lighting film, wall, main frame, lighting device, and thermal insulation equipment. The wall frame and polyethylene film frame together form the main frame of the greenhouse, supplemented by wall insulation board and polyethylene. The film frame and the setting of automatic ventilation windows at the upper and lower slopes are important characteristics of the environmentally friendly greenhouse without pillars. The environmentally friendly greenhouse without pillars is not affected by the temperature and the surrounding environment of the greenhouse. , Fruits, vegetables, aquaculture, land farming, rice seedlings and other fields. Because this kind of greenhouse sheds all the pillars that affect ventilation, it reduces the cost of the greenhouse and reduces the labor intensity; the surface of the greenhouse is smooth, which enhances the strength of air circulation, and is very straightforward to realize automatic ventilation in the greenhouse.

Standardized greenhouses have become the mainstream of greenhouse ventilation:

The standardized greenhouse greenhouse becoming the mainstream of greenhouse ventilation is the second development trend of greenhouse greenhouse ventilation development. The regulation of the air humidity in the greenhouse and the regulation of the air composition in the greenhouse must be solved by the greenhouse ventilation. Therefore, the development of the greenhouse ventilation needs a series of ventilation regulations to control, such as: to what extent the air humidity in the greenhouse must reach Ventilation control etc. need to be standardized. The span of the greenhouse should be conducive to the circulation of air in the greenhouse. If the span of the greenhouse is too large, the arch of the greenhouse will be relatively small, and the rate of air replacement will be accelerated, so that the temperature in the greenhouse cannot meet the needs of crop growth in a long time , Affecting the growth of crops in the shed. The design of the steel frame must also meet the requirements for the ventilation of the greenhouse. The density of the columns, the diameter of the breast diameter and the design of the steel mesh on the roof must not only meet the requirements of compression resistance, but also fully consider the requirements of ventilation. Generally, the steel mesh should be kept At a distance of about 15 cm, it is evenly spread under the ventilation film in the greenhouse.

China Glass Greenhouse For Vegetables

Realize the intelligent control of china glass greenhouse for vegetables:

Realizing intelligent control of greenhouse greenhouse ventilation is the third development trend of greenhouse greenhouse ventilation development. The development of greenhouse ventilation has gone through the phases of manual control ventilation and automatic control ventilation, and it is bound to develop to intelligent control of greenhouse ventilation. In the early stage of the development of greenhouses, greenhouse ventilation was generally completed manually. The employees of the greenhouses were both the managers of the greenhouses and the feelers and performers of the greenhouse ventilation. When they felt that ventilation was needed in the greenhouses, they opened the roof or The cracks on the side of the shed provide ventilation. When to ventilate and the maintenance of ventilation practices are judged based on the long-term accumulation of experience and feelings of the greenhouse practitioners, which directly results in a low ventilation effect. With the development of science and technology, the automation control technology has been greatly developed. The automation control technology has gradually been applied to the ventilation of greenhouses. Through the establishment of computers and automatic control systems, the greenhouse ventilation has realized automatic regulation and automatic ventilation. Various sensors in the greenhouse can automatically collect technical parameters such as air temperature and humidity, carbon dioxide content in the greenhouse, and the automatic control system compares the actual measured data with the preset values to determine whether to perform ventilation. The realization of greenhouse ventilation rack has further improved labor productivity. Based on production practice and automation of greenhouse ventilation, intelligent greenhouse ventilation is collected. By collecting various data in the greenhouse, summarizing, experimenting and analyzing, constructing various expert systems to follow the growth of crops in the greenhouse Model, develop the expert ventilation control system suitable for different crops in the shed. Through this system, the real-time data is processed in time, the ventilation scheme is automatically analyzed and selected, the ventilation operation is performed, and the intelligent control of the ventilation in the shed is realized.

The Right Way to Ventilate Your Greenhouse

China glass greenhouse manufacturer to share with you: Greenhouse is a collective term for plastic greenhouses, multi-story greenhouses, single greenhouses, vegetable greenhouses, suitable plastic greenhouses, solar panel greenhouses, smart greenhouses, etc. In places without contagious soil, well drained, sheltered from the sun, sunny and dry. The development of greenhouse ventilation has great significance for the production and operation of greenhouses. The space in the greenhouse is small, and the shelter is relatively sheltered from the wind. In addition to the use of pesticides and fertilizers, the carbon dioxide content in the small environment of the greenhouse is continuously reduced, and more and more harmful gases are accumulated, causing crop diseases in the greenhouse. The occurrence of adverse effects on the growth and development of crops in greenhouses. Therefore, when the content of air components in the greenhouses does not meet the growth needs of the crops in the greenhouses, ventilation must be performed to eliminate the foul air in the greenhouses. At the same time, replace the fresh air outside the shed. However, how to grasp the ventilation time and the ventilation volume has become a major problem that plagues greenhouse greenhouse workers. The development trend of large-scale greenhouse ventilation is basically from manual control to automated control, and from traditional methods to modernization and standardization. In particular, the large-scale application of new technologies and materials in greenhouse ventilation rack put forward more standardized and high requirements, and the traditional ggreenhouse ventilation control alone cannot regulate the production and operation of greenhouse greenhouses. Based on such a development, we must fully study the development of greenhouse ventilation, correctly face the different requirements of different greenhouses for gout, realize automatic management and control of greenhouse ventilation, and promote the healthy and sustainable development of modern agriculture.

Pinion for Shading System

First of all, fully understanding the development of greenhouse ventilation is an objective requirement for the development of greenhouse ventilation in modern agricultural development. The development of modern agriculture requires that the wind direction of the greenhouse be developed under the direction of automatic control, standardization and scientificization. It can automatically measure the carbon dioxide required for crop growth in the greenhouse, and harmful gases that endanger crop growth. Air; To grasp the development of greenhouse ventilation, we must break the traditional concept, reform the management model, and open up new ways of greenhouse ventilation. Secondly, fully understand the development of greenhouse ventilation is an important symbol of the modernization of greenhouse ventilation. Whether the modernization of greenhouse peach ventilation can be realized is the key to the development of greenhouse ventilation, which determines the future development of greenhouse peach ventilation and its contribution to modern agriculture. Third, fully understand the development of greenhouse ventilation is the needs of greenhouse ventilation itself. Fully understanding the development of greenhouse ventilation will help employees in greenhouses have a clear and clear understanding of greenhouse ventilation, accurately grasp the pulse of greenhouse ventilation development, increase investment in science and technology, and use a large number of new technologies and materials to ventilate greenhouses The scientific, standardized and automated development has laid a solid foundation.

Importance of Nutrient Solution Formulation in Hydroponic Systems

The key to the indoor hydroponic system is undoubtedly the formula of the nutrient solution, which mineral elements the plants need, and the concentration at which the plants can absorb it are all questions that need to be answered when preparing the nutrient solution. From the famous willow experiment in the 16th century, plant physiology has undergone development for centuries. Plant physiologists have divided the nutrients necessary for growth and development absorbed by plant roots into a large number of elements and trace elements. A large number of elements are nitrogen, phosphorus, and sulfur. , Potassium, calcium, magnesium, silicon, these elements are elements required by plants, so common artificial fertilizers are mostly nitrogen, phosphorus and other fertilizers; trace elements include iron, manganese, zinc, copper, molybdenum, chlorine, sodium, Nickel, etc. These mineral elements exist in the form of mineral ions and are absorbed by plant roots.

With the exception of carbon, hydrogen, and oxygen, all nutrients necessary for plant growth are absorbed into the plant by the roots. Although plants differ in the amount of macroelements and microelements required, they are all essential nutrients, each of which plays a unique role in plant growth. The lack of any element will affect the normal development of plants. Different plants have different manifestations of lack of mineral elements. The side dish of basil in three cups of chicken is a common hydroponic cultivation crop in a plant factory. Dr. Neil Mattson and Tanya Merrill of Cornell University in the United States have relatively complete the deficiency The comparative experiments show that the lack of each mineral element will cause diseases to plants:

The lack of nitrogen fertilizer will lead to yellowing of old leaves and smaller plants;

Lack of phosphate fertilizer causes purple spots to appear on old leaves, long-term phosphorus deficiency causes purple spots to expand, leaves lack green, and plants flower early;

Potassium deficiency will cause necrosis of the basil leaves, and the leaves turn yellow;

Calcium deficiency leads to necrosis of the young leaves and yellowing of the roots;

Lack of magnesium will cause leaf lack of green, and further deterioration will cause leaf necrosis;

Sulfur deficiency will cause the whole leaf to turn yellow, and the growth of the plant will be significantly reduced;

Long-term iron deficiency will cause green deficiency symptoms in the young leaves first;

Boron deficiency can lead to a lack of green leaves and inhibited root growth.

Obviously, the preparation of nutrient solutions requires repeated experiments to adjust the concentration of various mineral elements. For different types of crops, or different varieties of the same crop, special nutrient solutions are prepared, and even the same variety of crops have different mineral levels during different growth periods There will be differences in nutritional needs. In addition, all kinds of mineral ions are dissolved in the nutrient solution, and the total ion concentration and pH of the nutrient solution must be controlled within the range suitable for plant growth. This must take into account the chemical reaction and solubility between the various ions.

If it is said that advanced technical equipment provides a solid hardware foundation for the operation of plant factories, then the nutrient solution formula and light formula are the most important technical backing for plant factories to achieve efficient and high-quality production. The plant factory of Zhonghuan Yida has customized nutrition formulas for plants when cultivating different varieties of fruit vegetables and leafy vegetables, ensuring that the different needs of different crops for mineral nutrition are met one by one, thereby achieving efficient production.

The Central Yida plant has nutrient solutions for different crops.

Nutrient solution circulation and control system in plant factory:

Hydroponic cultivation of a plant is simple, but it is different for hundreds or thousands of plants: during the industrial production of hydroponic crops, it is not practical to change water regularly, and during the cultivation process, it may be in the nutrient solution. The algae produced and the toxic substances metabolized by the plant itself will inhibit the growth of the plant, and the properties such as the concentration and pH of the culture medium will also change as the plant absorbs water and nutrients. These factors bring challenges to hydroponic cultivation in plant factories.

At present, the nutrient solution circulation and control system is a very important water and fertilizer control system in a plant factory. It is a technology that recycles the remaining nutrient solution after the plant is used. Automated control.

Intelligent plant nutrient solution circulation control equipment is used in the plant factory of the Central High-Tech Yellow River Delta Agricultural High-tech Industrial Demonstration Zone Project.

The nutrient solution circulation control system mainly includes cultivation beds, nutrient solution tanks, detection sensors, circulating water pumps, filtration and disinfection devices, and automatic control devices.

The nutrient solution in the nutrient solution pool is monitored by a detection sensor to ensure that its ion concentration, pH, oxygen content and temperature are in a range suitable for plant growth. The ion concentration and pH are adjusted by adding a prepared nutrient solution mother or acid-base solution. The increase of the oxygen content is through the circulation of the stirring device or the culture liquid, and the liquid temperature is performed through the heating or cooling device.

The nutrient solution is pumped into the cultivation bed by a pump, and the excess nutrient solution is filtered and sterilized and reflowed into the nutrient solution pool. This is the nutrient solution circulation process.

Indoor Hydroponic System

Optimization of hydroponic system:

The nutrient solution circulation control system realizes the full use of water and nutrients, and avoids environmental pollution caused by the discharge of nutrient solution waste liquid to the outside world. It not only saves resources, but also has the characteristics of environmental friendliness. However, the current nutrient solution circulation control system still has room for optimization.

Although the recycling of nutrient solution saves resources and protects the environment, the organic acids and other substances secreted during plant growth and metabolism are not good for plant growth. This makes the accumulation of harmful substances in the nutrient solution circulating fluid. Removing these harmful substances is extremely beneficial to the realization of nutrient solutions Recycling.

At present, the most suitable method is the photocatalytic method, which uses the strong oxidizing effect of special materials nano-titanium dioxide to absorb ultraviolet light, and decomposes organic acids in nutrient solutions into carbon dioxide, water and other small molecules. The photocatalytic method has been widely used in the purification of environmental pollution, and the application in the purification of nutrient solutions is still in the research stage. This method is not only efficient and non-toxic, but also has no effect on the quality of vegetables. Method of nutrient solution purification.

The growth process of plants cannot be fully quantified. Just as "there are no two identical leaves in the world", each round of crop growth will cause different changes in the composition of the nutrient solution, although the concentration and pH of the nutrient solution can be real-time Monitor and make regulatory decisions accordingly, however, the detection of a single nutrient element still cannot be monitored in real time.

With the continuous development of sensing technology in the agricultural field, the detection technology of single nutrient elements is also in the stage of rapid development. Maybe in the near future, the single-nutrient element real-time detection technology can be applied to the nutrient solution circulation control system. When a crop grown in a plant absorbs more of an element, it can detect the rapid decrease in the concentration of the element in time, and then increase the dose of this element in the nutrient solution.