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Eight methods for dehumidification in greenhouses
- Jul 03, 2018 -

(1) Ventilation and ventilation: Ventilation and ventilation is the most direct and simple way to dehumidify greenhouse greenhouses, but we must also pay attention to ventilation must be carried out at high temperatures, otherwise it will cause the indoor temperature to drop. If the temperature drops too fast during ventilation, the vents should be closed in time to prevent the crop from being damaged by a sudden drop in temperature.

(2) Reasonable watering: Water is the main factor that causes indoor humidity to increase. Winter and spring production can be selected from sunny ditch or sub-plant sprinkling, and the film can be covered with dark film under the membrane. Sprinkle water must strictly control the amount of water spray to prevent excessive humidity in the room. Every time the water is sprinkled, the air is properly released, and the soil is drained in time to reduce the soil moisture and also reduce the air humidity. The

(3) Film mulching: The use of mulching film can reduce the transpiration of soil moisture, which is an important measure to reduce the air humidity in greenhouse greenhouses. It is possible to select a large ridge and a ridge in the greenhouse, and the mulch covers the double ridge. When the water is sprinkled, the water flows in the small ditch under the mulch. The mulch hinders the transpiration of water, which prevents a significant increase in the humidity of the air in the shed after watering.

(4) Heating and dehumidification: This method can satisfy the demand of the crop for temperature and the relative humidity of the air. When the plant grows to be resistant, the sprinkler can be heated up to about 30 °C for 1 hour, and then ventilated and drained. It can be repeated once after 3-4h when the shed is wet below 25 °C.

(5) Selection of outstanding moisture-absorbing curtain materials: Excellent moisture-permeable and hygroscopic insulation screen materials can prevent condensation on the inner surface and prevent the dew from falling onto the plants, and then reduce the humidity of the air.

(6) Natural moisture absorption: It can use straw, wheat straw, quicklime and other materials to spread water vapor or fog between rows to reach the purpose of dehumidification.

(7) Cultivating and dehumidification: After blocking the soil capillary, it can prevent the soil capillary water from rising to the surface layer and prevent a lot of transpiration of soil moisture.

(8) Increasing the amount of light transmission: increasing the amount of light transmission can improve the room temperature. After the room temperature rises, the air is often ventilated and the intention of dehumidification is reached.

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