Light Deprivation Roof Vents Greenhouse For Vegetables Flowers
Product Description
The main types of multi-span film greenhouses are double-story film greenhouses and single-story film greenhouses. The two main characteristics of multi-span film greenhouses are simple structures and flexible forms. Anti-aging performance, bearing capacity of the main structure of the greenhouse, etc. The maintenance framework structure of multi-span thin film greenhouses needs regular maintenance. The covering materials should improve anti-cracking and anti-aging ability, can resist wind and sun, and achieve the purpose of light transmission and heat preservation. Therefore, it is necessary to take good reinforcement measures and repair any leaks in time.
Professional Design
1. Light intensity
The sunlight in the greenhouse is obviously lower than that in the open field. Generally, the indoor high average illumination does not exceed 80% of natural light.
2. Temperature change
The temperature in the greenhouse is higher than that of the open field all year round, but the number of winters in the greenhouse is significantly reduced. Solar greenhouses can produce sparse vegetables in all seasons.
3. Air humidity
The absolute humidity and relative humidity of the air in a solar greenhouse are generally greater than the open field.
4. Change of gas
Ventilation should be carried out in a warm room in a timely manner. The CO2 concentration in the greenhouse changes abnormally significantly.
5. Soil environment
The temperature of the soil in the greenhouse is high, the humidity is high, and the microorganism activity in the soil is vigorous. Therefore, the conversion of soil nutrients and the decomposition of organic matter in the greenhouse are very fast.
Question
1. Color difference problem: Because the film produced by each machine is not the same size, each time the film is produced is not the same batch, but we guarantee that it is authentic and the quality is definitely the same, please rest assured to buy.
2. Size problem: Please rest assured that we will cut strictly according to the size given by our customers. It is cut by hand only.
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