1. Ventilation and dehumidification. Ventilation is a good way to dehumidify. Ventilation must be carried out at high temperatures, otherwise the indoor temperature of the continuous greenhouse will drop. If the temperature drops too fast during ventilation, close the vent in time to prevent the vegetables from being harmed by a sudden drop in temperature. 2. Mulch film covering. Using mulch cover can reduce the evaporation of soil moisture and is an important measure to reduce indoor air humidity. 3. Heating and humidification. The method can meet the temperature requirements of vegetables and reduce the relative humidity of the air. When the plant grows to be resistant, the watering closed shed heats up to about 30℃ for 1 hour, and then ventilate and drain moisture. After 3-4 hours, when the shed temperature is below 25℃, it can be repeated once. 4. Adopt insulation curtain material with good moisture absorption. Moisture-permeable and hygroscopic insulation curtain materials, such as non-woven fabrics, can prevent condensation on the inner surface of the shed and prevent dew from falling on the plants, thereby reducing the air humidity of multi-storey greenhouses. 5. Naturally moisture absorption. Straw, wheat straw, quicklime and other materials can be used to spread between rows to absorb water vapor or fog to achieve the purpose of dehumidification. Qianyu Wangpu https://40122.qianyuwang.com/