What should we consider when building a plastic greenhouse?

Site selection:

- Terrain and topography: Choose a flat and open place to facilitate construction and mechanical operation, and to facilitate uniform light distribution. If in a mountainous area, choose a sunny and gently sloping land to facilitate drainage and ventilation.

- Soil conditions: Give priority to fertile, loose, water- and fertilizer-retaining soil without pests and diseases to reduce soil improvement costs and facilitate crop growth.

- Surrounding environment: Stay away from pollution sources such as factories and roads to avoid crop contamination. At the same time, there should be sufficient clean water and power sources in the surrounding area, and convenient transportation to facilitate the transportation of materials and products.

Structural design:

- Type selection: Single sheds have simple structures and low costs, suitable for small-scale planting; multi-span sheds have large spaces and high land utilization rates, suitable for large-scale production and intelligent management, and should be selected according to the scale and needs of planting.

- Frame material: Bamboo and wood frames are low in cost but easy to rot; hot-dip galvanized steel pipes are durable, corrosion-resistant, and have a long service life, and can be selected as needed.

- Shed size: The height is generally 2.5-4 meters, which is convenient for operation and ventilation; the span is 6-12 meters, which is conducive to lighting and structural stability; the length is determined by the terrain and planting plan, but too long will affect ventilation and temperature uniformity.

Covering materials:

- Light transmittance: Materials with high light transmittance, such as polyvinyl chloride (PVC) and polyethylene (PE) films, can ensure the light requirements of crops and promote photosynthesis.

- Thermal insulation: EVA films have good thermal insulation properties, which can reduce heat loss and maintain stable temperature in the greenhouse.

- Durability: Good quality, anti-aging, and tear-resistant films can extend service life and reduce costs, such as PO films with anti-aging agents.

Supporting facilities:

- Ventilation system: Reasonably set vents, such as top vents and side vents, to promote air circulation, regulate temperature, humidity and gas composition.

- Irrigation system: Drip irrigation, sprinkler irrigation and other water-saving irrigation systems can accurately supply water, improve water resource utilization, and maintain uniform soil moisture.

- Shading and cooling facilities: When the light is too strong in summer, the shading net can shade and cool down; if necessary, a wet curtain fan cooling system can also be installed.

- Temperature control system: equipped with thermometers, temperature controllers, etc., combined with vents, covers, etc. to adjust the temperature to ensure the appropriate temperature for crop growth.

Cost and budget:

- Material cost: including frame, film, accessories, etc., you need to compare the prices and quality of different suppliers and choose the most cost-effective one.

- Construction cost: if you hire a professional construction team, you need to consider the construction cost; if you do the construction yourself, you need to calculate the labor cost and time cost.

- Later maintenance cost: consider the cost of film replacement, equipment maintenance, etc. to ensure the long-term and stable use of the greenhouse.