What Are The Common Greenhouse Flowers?

What kind of flowers are good for greenhouse? What are the common glass greenhouses for flowers? How to grow and manage greenhouse flowers? There are some things you must know about growing flowers in greenhouses. Today, china glass greenhouse manufacturer will share some precautions for growing flowers in greenhouses!

It is well known that many flower plants are seasonal, but due to the flower market's demand for flower diversity and the development of technology, more and more greenhouse flowers are born! Growing flowers in greenhouses can create the most suitable environmental conditions for flower growth, break the seasonal and regional restrictions on flower growth, and cultivate flowers in different regions and seasons. Like seasonal vegetables, scarcity is used to enhance market competitiveness and generate revenue.

Planting Greenhouse

Because of seasonal differences between North and South, there are also differences in the varieties cultivated in greenhouses. For example, Nantian Bamboo, Rhododendron, Camellia, Michelia, Red Rice, Red Leaf Flower, Osmanthus, Brown Bamboo, Gardenia, Longevity Flower, Hibiscus, Oleander, Five-color Plum, Fuchsia, etc. To be able to overwinter, greenhouse cultivation is only needed in the north, because the outdoor temperature in the north is extremely low in winter. If it is not maintained in the winter, it will not be safe to overwinter. In addition, early spring flowers such as spring jasmine, calla lilies, cyclamen, cineraria, and bougainvillea flowers. If you want to see them bloom in the north in the north, they must be cultivated in a greenhouse. There are other flowers that are warm and warm, such as pineapples, cacti, variable-leafwoods, dracaenas, tropical orchids, etc. The northern autumn and winter seasons must also be moved to the greenhouse for conservation.

In the north, there are many varieties of flowers that need to be maintained indoors in autumn and winter. In the southern part of the winter, the temperature is relatively high, and most flower plants do not need to be maintained indoors. Only those flowers that are tropical-loving and cold-tolerant, and flower varieties that are suitable for growing in the north and that need to be vernalized at low temperatures need proper cold protection Protection, such as corn poppy, cornflower, delphinium, poppy, fragrant cornflower, kale grass, California poppy, etc.

This is the benefit of planting greenhouse. It can be considered that controlling temperature and humidity, meeting the growth needs of flower plants, reducing diseases and insect pests, and making anti-season flowers better meet market demand. Of course, there are many things to pay attention to in greenhouse cultivation of flowers. First of all, it depends on the size of the greenhouse and the expected investment. After all, investment has risks. Secondly, some facilities must be complete. If the temperature and humidity control is not done well, the greenhouses are built in vain. The modern greenhouses generally use modern intelligent systems, and this investment is relatively large. However, as long as the facilities are in place and there are masters of flower cultivation, growing southern flowers in the northern greenhouse is very popular.

About the functions and advantages of glass greenhouses

Glass greenhouse refers to the greenhouse with glass as the lighting material, which belongs to a kind of greenhouse. In the cultivation facilities, the glass greenhouse is the form with the longest service life and is suitable for use in a variety of regions and various climate conditions. The industry is divided into non-construction models based on the size of the span and the size of the booth, and is divided into different uses: glass greenhouse for vegetables, glass greenhouse for flower, nursery glass greenhouse, glass greenhouse, research glass greenhouse, three-dimensional glass greenhouse, special-shaped glass greenhouse, leisure glass greenhouse, smart glass greenhouse, etc. Its area and use mode can be freely adjusted by the main greenhouse. The smallest ones are courtyard leisure types, with a large height of more than 10 meters, a span of up to 16 meters, a maximum of 10 meters in the bay, and a smart control of one button. The winter heating problem of glass greenhouses can adopt a variety of heating methods, and its energy consumption costs are centered, and most of them are acceptable.

First: Glasshouse function

Glass greenhouse ventilation

The purpose of glass greenhouse ventilation is mainly to exclude the waste heat of the greenhouse and the moisture in the greenhouse, adjust the air composition in the greenhouse, exclude harmful gases, and make the environmental temperature, humidity and air in the greenhouse suitable for plant growth.

1. Natural ventilation: Glass greenhouses rely on natural ventilation to regulate the indoor environment most of the time. The structural form of large-scale productive glass greenhouses is generally a double-sloping multi-span greenhouse, and the ventilation form is to install ventilation windows on the side walls and the roof ridge. The total ventilation area is not less than 15% of the greenhouse area, preferably more than 30%. When the ridge wind window is opened, the sash should preferably be inclined upward beyond the horizontal plane, and when it is fully opened, it will form a 100 angle with the horizontal plane to obtain a good ventilation effect. The amount of natural ventilation is related to wind speed, wind direction, location of ventilation windows, area of ventilation windows, and temperature difference between inside and outside the greenhouse. When the total area of the ventilation window is 27% of the indoor floor area, if only the ridge ventilation, even if the outdoor wind speed reaches 10 km / h, the ideal ventilation rate of 0.75 per minute cannot be achieved; When the ventilation window is fully opened, the ventilation rate can reach 0.68 times / minute under almost no wind, which is close to the normal recommended 0.75 ventilation / minute.

2. Although forced ventilation glass greenhouses rely on natural ventilation to regulate the environment most of the time, when the summer temperature is high, especially in hot weather where the outdoor temperature exceeds 33 ° C, when natural ventilation alone cannot meet the greenhouse cooling requirements, forced ventilation is used. And in conjunction with other measures to cool down is a commonly used means in production. Forced ventilation is the use of fans to convert electrical energy or other mechanical energy into wind energy, forcing air flow to perform greenhouse ventilation and achieve cooling effects. The theoretical cooling limit of forced ventilation is that the indoor air temperature is equal to the outdoor air temperature. Because the temperature difference between the inside and outside of the greenhouse at this time is zero, and the ventilation volume is infinite, it is impossible in practical applications. Due to mechanical and plant physiological reasons, the general ventilation intensity of the greenhouse is 0.75 times per minute. Five times, the temperature difference between inside and outside the greenhouse can be controlled within 5 ℃.

Agricultural Glass Greenhouses

Second: Glass greenhouse heating

1. Agricultural glass greenhouses in northern China need to be heated in winter, otherwise they cannot be produced in winter. The length of the greenhouse heating time varies. It takes about 5 to 6 months to warm up in the Northeast, and 3 to 5 months in North China. Planting flowers or raising seedlings in the South also requires heating or temporary supplementation.

2. Hot air heating: The hot air heating system consists of a heat source, an air heat exchanger, a fan, and an air supply pipe. The working process is as follows: the air ventilator is heated by the heat provided by the heat source, and a part of the air in the greenhouse is forced to flow through the air heat exchanger with a fan, so that the greenhouse is continuously circulated for heating. The heat source of the hot air heating system can be oil, gas, coal-fired devices or electric heaters, or it can be hot water or steam. Different heat sources have different installation forms for hot air heating equipment. The air heat exchanger of the steam, electric or hot water heating system is installed in the greenhouse and cooperates with the fan to provide hot air directly. Oil and gas-type heating devices are installed in the greenhouse, and the combusted flue gas is discharged into the greenhouse. Coal-fired hot air stoves are generally large and dirty during use, and are generally installed outside the greenhouse. In order to make the hot air evenly distributed in the greenhouse, the hot air is sent into the ventilation pipe by a ventilator.

3. Electric heating: The more common method of electric heating is to bury the geothermal line in the ground to increase the ground temperature. It is mainly used in greenhouses to raise seedlings. Electrical energy is the cleanest and most convenient energy source, but electrical energy is a secondary energy source. It is relatively expensive and can only be used as a temporary heating measure for short-term use.

Third, the energy saving of the greenhouse

The heat loss of the greenhouse is mainly through the following ways: heat conduction through the glass envelope, which can account for 70% to 80% of the total heat loss; º radiation radiation to the sky; »ventilation and heat dissipation; Greenhouse energy saving is to reduce the heat dissipation of the greenhouse. The effective method is to install thermal insulation curtains, which can reduce the heat loss at night. Under the premise of satisfying crop light, it is best to install double-layer light-transmitting materials, whose heat loss can be reduced by 50%. It is also very effective to reduce the heat transfer in the ground by using cold insulation trenches and filling with insulation materials.

Fourth, glass greenhouse cooling

In most parts of China, the summer is hot and the temperature is high. When the outdoor temperature is above 30 ° C, the temperature inside the greenhouse exceeds 40 ° C. If only the ventilation is used and the main temperature in the greenhouse is still above 35 ° C, normal production cannot be performed in the greenhouse, and other cooling methods must be used to reduce the indoor temperature. Greenhouse cooling methods used in production on a daily basis include: 1. Shading and cooling: The use of opaque or low-light-transmitting materials to prevent sunlight from entering the greenhouse. Reduce the temperature of the greenhouse. Due to different shading materials and installation methods, the greenhouse temperature can be lowered by 3 ℃ ～ 10 ℃. Shading methods include indoor shading and outdoor shading. The indoor shading system is a support system made by pulling metal wires or plastic net wires on the framework of the greenhouse, and installing the sun shade net on the supporting film line. Generally use electric control or manual control. The outdoor shading system is to install another shading frame outside the greenhouse frame, and install the shading net on the frame. The outdoor shading net has a good cooling effect. It can directly block the solar energy outside the greenhouse, and all types of shading nets can be used.

3. Evaporative cooling: Evaporative cooling uses the unsaturated nature of air and the latent heat of evaporation of water to cool down. When the moisture in the air does not reach saturation, the water will evaporate into water vapor and enter the air. At the same time as the water evaporates, it absorbs the heat in the air, reduces the temperature of the air, and increases the humidity of the air. In the process of evaporation and cooling, the air flow inside and outside the greenhouse must be ensured, and the high-temperature and high-humidity gases in the greenhouse can be discharged from the greenhouse, and fresh air must be replenished. Therefore, forced ventilation must be adopted. The current methods of evaporative cooling include wet curtains-fan cooling and spray cooling.

3. Roof spray cooling system: It evenly sprays water on the roof of the glass greenhouse to reduce the temperature of the greenhouse. When water flows on the roof of the glass greenhouse, the water exchanges heat with the glass of the greenhouse roof, taking away the heat in the greenhouse, and when the thickness of the water film is greater than 0.2 mm, all the energy of solar radiation is absorbed and carried Go, this is equivalent to shade.

The winter heating problem of glass greenhouses can adopt a variety of heating methods, and its energy consumption costs are centered, and most of them are acceptable. Glass greenhouse structure mainly includes greenhouse foundation, greenhouse steel structure and aluminum alloy structure.

1. Advantages of glass greenhouse:

① Large lighting area and uniform light

② Long use time and high intensity

③ Has strong anti-corrosion and flame retardancy

④ More than 90% of light transmission, and does not decay with time

Conditions For The Selection Of The Greenhouse Framework

Xinghua JinYi Greenhouse Equipment Co., Ltd. was established in 2011, specializing in Greenhouse engineering design, manufacturing and installation, and sales of Greenhouse accessories.

China glass greenhouse manufacturer to share with you: First, the manufacturer's qualifications should be inspected when selecting the greenhouse framework. Choosing the skeleton of the steel structure greenhouse is not a simple one. When we select the framework of the greenhouse, we need to conduct field investigations before we can draw the results. When we are using the greenhouse skeleton of Zhengzhou Bridge Factory, we can find a greenhouse skeleton related to the Bridge Factory for investigation. We should first analyze the quality of the greenhouse skeleton from the user's point of view, and then examine this further. The relevant qualifications of the steel structure greenhouse factory are finally confirmed according to the user's habits. Although this method takes a long time, but the careful analysis of the greenhouse framework obtained is very effective and accurate. Decreasing the operating cost of enterprises, so we should choose the steel structure greenhouse with our own emotions.

Second, we must analyze the greenhouse framework of the agricultural single span greenhouse used by colleagues. Every industry has relatively popular greenhouse skeletons, and the greenhouse skeletons used are not the same. Farmer friends will definitely have counterparts when building greenhouses, so we should first analyze which greenhouse skeletons are used by peers when selecting greenhouse skeletons. It is a very good method to analyze the greenhouse skeleton used by peers to confirm your own greenhouse skeleton. This method is often used when confirming the greenhouse skeleton to farmers 'friends. Therefore, when we do not understand the farmers' friends in the industry, we analyze It is a good way for peers to conclude that the greenhouse framework established by the opponent is a greenhouse. Generally, when we confirm the framework of the greenhouse, it is best to select more than five colleagues for comparison, then take their strengths, use the framework of the greenhouse one by one, and finally confirm the framework of the greenhouse for the farmers friends who have established the greenhouse.

3. Confirm the raw materials: The steel structure greenhouse has a steel structure skeleton, an inorganic glass fiber reinforced plastic structure skeleton, and a bamboo and wood structure skeleton. Compared with the other two structural frameworks, the agricultural glass greenhouse steel structure skeleton has a low cost and a long service life Long advantages.

4. Confirm the structure: confirm whether the spring-autumn arch shed or winter warm shed is constructed according to the requirements, and confirm the presence or absence of columns according to the span requirements.

V. Installation method: According to the shed construction method, confirm the shed orientation, shed pole spacing and other issues.

  The installation steps of the greenhouse are installed from top to bottom. In the industry, it is generally divided into the production of foundations, the installation of greenhouse frameworks, the installation of internal and external shading systems, the installation of greenhouse aluminum profiles, the installation of top cover materials, and surrounding coverage Installation of materials, installation of side-hung windows, power distribution and drive system debugging.

The foundation of the greenhouse is generally divided into the independent foundation in the middle and the installation of the surrounding ring beams. These include the ultra-flat fixing of the embedded parts. After these work is completed, the skeleton material can be put into the site for installation. After the framework of the greenhouse is installed, the construction of the retaining walls around the greenhouse can be performed simultaneously.

The installation of greenhouse framework materials includes the installation of columns, the installation of beams, the installation of the sink bracket between the columns, and then the installation of the sink (the girder or the arch connector is installed on the ground before the sink is installed), Installation of herringbone beams or levers, installation of external sunshade skeletons. All the above items are installed, and the installation of the skeleton is considered complete. The greenhouse skeleton labor cost accounts for about 35% of the total installation cost.

Agricultural Glass Greenhouse 

About Greenhouse Applications And Orientation Options

China glass greenhouse manufacturer to share with you:

I. Internet of things technology. In fact, Internet of things technology is the integration and application of various sensing technologies, modern network technologies and artificial intelligence and automation technologies. In greenhouse environment, single span greenhouse can use the Internet of things technology, become a measurement control, wireless sensor networks using different sensor node and has a simple actuator node, such as fan, low pressure motor, valve actuator working current is low, a wireless network, to measure the humidity, matrix composition, pH, temperature and air humidity, air pressure, light intensity and co2 concentration, etc., through model analysis, automatic control of Greenhouse environment control, irrigation and fertilization, the best conditions for the growth of plants.

For agricultural parks with greenhouses, the Internet of things can also realize automatic information detection and control.Equipped with wireless sensor nodes, each wireless sensor node can monitor various environmental parameters. By receiving data from the wireless sensor gathering node, for storage, display and data management, which can realize all base test point of information acquisition, processing, management and analysis, and the intuitive graph and curve display to each greenhouse users, according to the requirements of plant at the same time provide all kinds of sound and light alarm information and SMS alarm information, realize intensive greenhouse, networked remote management.

In addition, Internet of things technology can be applied to different stages of greenhouse production. At the stage when the greenhouse is ready to be put into production, by arranging various sensors in the greenhouse, the internal environmental information of the greenhouse can be analyzed in real time, so as to better select suitable varieties for planting.In the production stage, practitioners can use Internet of things technology to collect greenhouse temperature, humidity and other kinds of information to achieve fine management, such as the opening and closing time of the shading network, sensing and control according to greenhouse temperature, light and other information, heating system start time, can be controlled according to the collected temperature information;After the product harvest, the information collected by the Internet of things can also be used to analyze the performance and environmental factors of plants at different stages and feed back to the next round of production, so as to achieve more accurate management and obtain better products.

Agricultural glass greenhouse is a Greenhouse covered with transparent Glass.

Design requirements: in the Foundation design, in addition to meeting the strength requirements, the foundation should also have enough stability and resistance to uneven settlement, and the foundation connected with the inter-column support should also have enough transmission of horizontal force and spatial stability. The bottom of the greenhouse should be located below the permafrost. The heating greenhouse can consider the effect of heating on the frozen depth of the foundation according to the climate and soil conditions.Generally, the bottom of the foundation should be more than 0.5 meters lower than the outdoor ground, and the distance between the top of the foundation and the outdoor ground should be more than 0.1 meters, so as to prevent the exposure of the foundation and adverse effects on cultivation.Except for special requirements, the distance between the top surface of the greenhouse foundation and the indoor floor should be more than 0.4 meters.

Independent foundation.Reinforced concrete is usually used.

Bar basis.Masonry structure (brick, stone) is usually adopted, and the construction is also carried out by on-site masonry. A reinforced concrete ring beam is often set at the top of the foundation to install embedded parts and increase the strength of the foundation.Steel structure mainly includes: greenhouse load-bearing structure and ensure the structure of the stability of the support, connectors, hard parts and so on.

Orientation selection:

In order to go beyond the frozen layer as appropriate, the greenhouse foundation design is based on the geological structure and local climatic conditions decided by the cold region, the soil of the pine foundation is relatively deep.The greenhouse that cannot be produced all the year round should be deeper than the greenhouse that is produced all the year round. The foundation filled with rubble stone or river stone should be filled with a 2030cm thick ground beam. The ground beam should be built above the wall. It is recommended that the wall should extend beyond 70 meters to allow for expansion joints. The rear wall of the greenhouse should have a certain ventilation window for winter ventilation according to the nature of the greenhouse.Rainbow greenhouse wall masonry before the top should be embedded in the arch frame for the arch frame installation.Greenhouse wall height according to the greenhouse span, generally 8 meters across the greenhouse back wall height of 2.5 meters is appropriate.7.5 meters across the back wall of the greenhouse with a height of 2.3 meters is appropriate.

Site selection should be as far as possible in flat land, greenhouse site selection is very important.The water table should not be too high, avoid high mountains and buildings blocking the light, and no sheds should be built in polluted areas for users of the farming and breeding industries.In addition, areas with strong monsoons should consider the wind resistance of selected greenhouses.Generally, the wind resistance of greenhouses should be above grade 8. The orientation of the greenhouse has a great influence on the heat storage capacity of the greenhouse, for the solar greenhouse.As a rule of thumb, greenhouses in the south face west.A west Angle of 510 degrees is preferred.This allows the greenhouse to store more heat.If more than one greenhouse is built, the spacing between the greenhouses should not be less than the width of one greenhouse.

Greenhouses that is, the greenhouses are located on both sides of the north and south sides.This orientation allows for a uniform distribution of light to the crops in the greenhouse.

Greenhouse wall data as long as there is good insulation and heat storage capacity of the data can be used.The greenhouse interior wall emphasized here must have the heat storage function, the solar greenhouse masonry should be adapted to local conditions.To store heat.At night, this heat is released to keep the temperature in the shed balanced.Brick wall, cement plastered wall, earth wall have heat storage capacity.The wall of greenhouse USES brick to mix the structure to be better commonly.

 Single Span Greenhouse

Introduction Of Glass Greenhouse

The glass greenhouse refers to the greenhouse with glass as the main transparent covering material.High light transmittance, up to 90%.Very suitable for the cultivation of highlight crops. A greenhouse covered with single layer of glass is called a single-layer glass greenhouse, and a greenhouse covered with double layer of glass is called a double-layer insulating glass greenhouse.Suitable for large ecological sightseeing park, seedling greenhouse, flower market, large shopping mall or ecological restaurant.The glass greenhouse greenhouse is beautiful and easy, the vision is fluent, has the better viewing effect.

Glass Greenhouse

Agricultural glass greenhouse installation: the main beam of the glass greenhouse greenhouse adopts trussed beam, which can bear the strong load, and the roof is triangular roof ridge, which can make the indoor light evenly distributed.The main frame of the greenhouse is a light steel structure, which adopts domestic high quality hot-dip galvanized steel pipe and steel plate for independent processing, and its service life is ≥20 years.The frame connection is connected with galvanized bolts and self-tapping screws, without welding spot, which is both anticorrosive and beautiful. Greenhouse special aluminum profile, high strength aluminum profile surface using anodic oxidation treatment.The transmission adopts gear rack, reasonable design, reliable quality, smooth operation and no noise.Gutter for aluminum alloy or galvanized plate.The surrounding area is covered by double-layer glass or insulating glass with good thermal insulation, and the top is covered by 5mm thick tempered glass. The greenhouse is equipped with internal/external shading and cooling system, fan wet curtain strong cooling system, anti-condensation system, skylight ventilation system, heating system, Internet of things intelligent control system, mobile seedling bed system, mobile sprinkler irrigation system, power distribution system, carbon dioxide supplement system, lighting supplement system, etc.

The advantages and USES of glass greenhouse are introduced below:

I. advantages of glass greenhouse:

1, indoor light distribution is even: large slope triangular roof (that is, a span of only a triangular roof), its backlit slope in the greenhouse will form a large shadow, the plants in this area grow poorly. And small slope triangular roof, can make the light even distribution;

2. Low heat consumption: compared with the triangular roof greenhouse on the large slope, under the same building area, the same eaves height and the same perimeter protection area, the small roof greenhouse on the small slope has a small construction space, thus it consumes less heat;

3, anti-drip dew function: in the cold weather season, indoor and outdoor temperature difference is large, so the inside of the greenhouse roof easy to produce condensed water.Due to the small slope of the small triangle roof, the condensed water has already flowed into the aluminum material collecting the condensed water at the sink without gathering to the degree of dripping, preventing the dripping of condensed water from causing foliation diseases;

4, easy maintenance: because the slope is small, roof repair, cleaning work is easy to carry out.

5. The greenhouse is made of hot-dip galvanized steel frame, which is durable and strong in wind and pressure resistance;

6, using glass as cover material, good light transmittance, good sealing, thermal insulation wall, high ornamental.

7. Large-span spire design, large indoor operation space, high utilization rate of greenhouse, good display effect;

Ii. Use of glass greenhouse:

Glass greenhouse greenhouses are generally used for large sightseeing greenhouses, seedling greenhouses, flower markets, large shopping malls or ecological restaurants due to the large-span roof design, large indoor operation space, high utilization rate of greenhouses and good display effect.

Our company is a professional greenhouse manufacturers.At present, in addition to the glass greenhouse for vegetables, we have multi span greenhouse china, our products have been warmly welcomed in many countries.If you have any requirements about our products, please feel free to contact us.

Multi Span Greenhouse