Complete Multi Span Plastic Film Greenhouse With Heating System Cooling System
Product Description
There are two main types of multi membrane greenhouses: double membrane greenhouses and single membrane greenhouses. The two characteristics of multi span film greenhouse are simple structure and flexible form. Aging resistance, main structure bearing capacity of greenhouse, etc. The maintenance frame structure of multi span film greenhouse needs regular maintenance. Covering materials should improve the ability of crack resistance and ageing resistance, resist wind and sun protection, and achieve the purpose of light transmission and thermal insulation. Therefore, good reinforcement measures must be taken to repair the leakage in time.
Professional Design
1. light intensity
The sunshine in greenhouse is obviously lower than that in open field. The indoor high average illuminance generally does not exceed 80% of the natural light.
2. temperature variation
The temperature in greenhouse is higher than that in open field all the year round, but the number of wintering in greenhouse is obviously reduced. Solar greenhouse can produce sparse vegetables all the year round.
3. air humidity
The absolute humidity and relative humidity of the air in the solar greenhouse are generally higher than that in the open air.
4. Ventilation
Ventilation should be carried out in a warm room in time. The change of CO2 concentration in greenhouse is remarkable.
5. soil environment
The greenhouse soil temperature is high, the humidity is big, the soil microorganism activity is strong. Therefore, the transformation of soil nutrients and the decomposition of organic matter in greenhouse are very fast.
Special greenhouse film
Because the temperature inside the double-layer anti-droplet greenhouse film is different from the temperature outside the greenhouse, water vapor will be formed. Water vapor forms a water film on the surface of the shed film and is left along the film to achieve the effect of no water droplets.
Its thermal insulation effect is better than grouting film. It is a cost-effective agricultural film with excellent thermal insulation. It is suitable for greenhouses such as vegetables, strawberries and fruit trees.
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