Regular ventilation: We said before, the greenhouse is so humid or more because of its seal, so proper ventilation is a good way to dehumidify. However, ventilation is not always available and must be carried out when the outdoor temperature is relatively high, otherwise it will cause the indoor temperature to drop. If the temperature drops too quickly during ventilation, the vents should be closed in time to prevent the crops from damaging due to the sudden drop in temperature.
increase the amount of light transmission: Increasing the amount of light can increase room temperature, room temperature, often for ventilation, to achieve the purpose of dehumidification.
heating and humidity: This method can meet the needs of vegetables on the temperature, but also reduce the relative humidity of air. When the plant grows to be resistant, the watering closed shed temperature up to about 30 ℃ for one hour, then ventilated and wetting, 3-4 hours after the wet shed below 25 ℃ can be repeated once.
reasonable watering: water is the main factor leading to increased indoor humidity, so how water has become an important measure to control humidity. Winter and spring production can choose sunny gully or ramets watering, mulching can be used under the film dark irrigation. Watering to strictly control the amount of water to prevent indoor humidity is too high. Appropriate after the watering of the wind, timely hoeing loose soil, can reduce soil moisture, but also can reduce the air humidity.
mulching: the use of plastic film mulching can reduce the evaporation of soil moisture, indoor air humidity is to reduce the important measures. For example, in the greenhouse using the size of Ridge and white, mulching double ridge approach, watering the water into the small ditch along the submerged membrane. Membrane to prevent the evaporation of water, also prevent the shed after the air humidity greatly increased.
Cultivation dehumidification: By cutting off the soil capillaries, it is possible to prevent the soil capillary water from rising to the surface and to prevent a large amount of soil moisture from being evaporated.
choose natural materials Hygroscopic: If you can use straw, wheat straw, lime and other materials shop in line adsorption of water vapor or fog, to achieve the purpose of dehumidification.
Choosing the right material for the thermal screen: The material of the thermal screen with good moisture permeability and hygroscopicity, such as non-woven fabric, can prevent dew condensation on the inner surface and prevent the dew from falling onto the plant to reduce the air humidity.