The greenhouse environment of soilless cultivation is different from that of soil cultivation. Soilless cultivation generally implements ground isolation. The indoor environment is less affected by soil, and the temperature, humidity and carbon dioxide concentration will change more widely. Insufficient concentration is the biggest factor affecting the growth of soilless crops.
1. Synchronous management of light, temperature, humidity and carbon dioxide in soilless culture greenhouses is very necessary. It is necessary to support heating and cooling facilities, spray humidification facilities, carbon dioxide addition facilities, ventilation and light supplement facilities, etc., to create a suitable and sustainable stable. The growing environment is an important guarantee for achieving high yield and high quality of soilless crops. Temperature, humidity, and carbon dioxide can be managed appropriately when the light is enhanced, and these indicators should be managed low when the light is weakened.
2. When the light intensity exceeds 40000lx and the indoor temperature exceeds 35℃, if the relative humidity of the air is lower than 40%, the transpiration of the plant will be too strong, the water metabolism in the body will be out of balance, and cucumber and melon strips will easily appear. Quality problems such as bending, girdle, lack of luster, and not brittle taste. In severe cases, the leaves of the plant become smaller, the leaf margins are yellow, and the growth points are atrophied, which affects the normal flowering and fruiting. The most significant damage to tomatoes and bell peppers is the appearance of fruit "umbilical rot" and weak growth. At the same time, high temperature, strong light, dryness and low humidity can also easily aggravate the occurrence of vegetable virus disease and powdery mildew.