Talking about the types and characteristics of greenhouses

Talking about the types and characteristics of greenhouses

Greenhouses are built in the fields for the cultivation of vegetables, flowers, etc. At first, before the promotion of greenhouses, people may just cover the vegetables grown with plastic film in the cold winter to ensure that they can eat fresh vegetables. Later, people were inspired to thicken the plastic film and then build it up with pillars. This is the prototype of the simple greenhouse. Due to different climates and applications in different places, the specifications of greenhouses are also different. There are also many types. The following introduces several types of greenhouses in Sichuan that are currently commonly used, and talk about their advantages and disadvantages.

1. Multi-span plastic film greenhouse

The arched greenhouse is an economical greenhouse with a small amount of structural steel and good thermal insulation performance. The manufacturing cost is relatively low, and it is an economical greenhouse, which is suitable for most parts of our country. In northern regions, double-film greenhouses are mostly used, and single-film greenhouses are mostly used in southern regions. It can get large light in the range of 0.4-0.7 microns of visible light. After the film is inflated, a thick air bag can be formed, which can effectively prevent heat loss and prevent the intrusion of cold air. The use of double-layer inflatable film can greatly improve the thermal insulation performance of the greenhouse. , saving operating costs. The top of the covering material is covered with polyethylene non-drip longevity film, the outer layer is anti-ultraviolet, and the inner layer is anti-condensation; the surrounding can be covered with polyethylene non-drip longevity film or polycarbonate hollow board according to user needs.

2. Glasshouse

The glass greenhouse has a modern and novel appearance, stable structure, smooth vision, strong light transmittance, up to more than 90%, and strong wind and snow resistance. The covering material is domestic single-layer float glass or double-layer insulating glass, which has a long service life, uniform illumination, high strength, and strong anti-corrosion and flame retardancy. More than 90% of the light transmission, and does not decline with time and other advantages. The double-layer insulating glass cover has stronger anti-condensation property and better thermal insulation effect than the single-layer glass cover (the light transmittance of the single-layer glass-covered greenhouse>90%, and the double-layer glass-covered light transmittance>80%). Surrounded by special aluminum connections. Compared with other greenhouses, it has beautiful appearance, stable structure, smooth vision, strong light transmittance, strong wind and snow resistance, and good display effect.

3. Solar panel greenhouse

Compared with other covering materials, the polycarbonate hollow board (PC board) has the advantages of good lighting, warmth retention, light weight, high strength, anti-condensation, impact resistance, and the PC board material only melts and does not expand. Under very high temperature, it has many advantages such as good flame retardancy, economical durability, no breakage or breakage during installation and use, strong adaptability and safety, etc. Anti-condensation function, anti-aging performance up to 10 years. Therefore, the greenhouse made of it has a long service life, modern appearance, stable structure, beautiful form, smooth vision, good thermal insulation effect, and can save heating energy consumption in winter.