Multi-span Greenhouses

1.Continuous muti-span greenhouse is a kind of upgrade existence of greenhouse, in fact is a kind of super large greenhouse, the original independent single greenhouse, with scientific means, reasonable design, excellent materials to connect the original independent single room model greenhouse.

Compared with the traditional greenhouse, the 1. space is a bright spot, and its utilization area is much larger than that of the traditional greenhouse.
2. Management is more unified than traditional greenhouse, more scientific operation, save time and improve efficiency.
3. Temperature and humidity. This method can not only meet the temperature needs of vegetables, but also reduce the relative humidity of air. When the plant grows to be resistant, the watering shed heats up to 30℃ for about 1 hour, and then ventilates and dehumidifies. After 3-4 hours, the shed temperature below 25℃ can be repeated once.
4.Use good moisture absorption insulation curtain material. Moisturizing and hygroscopic insulation curtain materials, such as non-woven cloth, can prevent the inner surface of the shed from dew and prevent dew from falling on the plant, thus reducing the air humidity of the greenhouse.
5. Natural moisture absorption. Straw, wheat straw, quicklime and other materials can be spread between rows to absorb water vapor or fog to achieve the purpose of moisture reduction.
The angle between roof and horizontal line after 1. can be determined according to the local solar height angle at noon on the Winter Solstice, generally 45~50° is appropriate.
6.Laying steel wire, because the bearing capacity of "rear roof" is too large, it is necessary to lay steel wire densely, and the distance between steel wire and steel wire is 8-10 cm.

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