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Joint greenhouse is an upgraded version of greenhouse, which is actually a super large greenhouse that connects the original independent single room greenhouse with scientific means, reasonable design, and excellent materials. Or it can be understood as an expansion. But how to reduce humidity in multi story greenhouses?
1. Ventilation, air exchange, and dehumidification. Ventilation is a good way to reduce humidity. Ventilation must be carried out at high temperatures, otherwise it will cause a decrease in indoor temperature in multi span greenhouses. If the temperature drops too quickly during ventilation, the ventilation opening should be closed in a timely manner to prevent the vegetables from being harmed by a sudden drop in temperature.
2. Cover with plastic film. The use of plastic film covering can reduce the evaporation of soil moisture and is an important measure to lower indoor air humidity. 3. Raise temperature and lower humidity. This method can meet the temperature requirements of vegetables and reduce the relative humidity of the air. When the plant grows to have resistance, water it and close the greenhouse to raise the temperature to about 30 ℃ for 1 hour, then ventilate and remove moisture. When the greenhouse temperature drops below 25 ℃ 3-4 hours later, it can be repeated once.
4. Use insulation curtain materials with good moisture absorption properties. Thermal insulation curtain materials with good moisture permeability and absorption, such as non-woven fabric, can prevent condensation on the surface of the greenhouse and prevent dew from falling onto the plants, thereby reducing the air humidity in multi span greenhouses.
5. Natural moisture absorption. Materials such as straw, wheat straw, and quicklime can be used to spread between rows, adsorbing water vapor or mist to achieve the purpose of moisture reduction.
