double tunnel greenhouse

Double tunnel greenhouse whic is The shade shed is to increase the utilization rate of the land. Another greenhouse is built in the shaded area of the back wall of the solar greenhouse. The sun shed is called the sun shed, and the shade shed is called the shade shed. The sun shed and the shade shed share the same wall. Different crops can be planted on both sides, green vegetables can be grown in the sun shed, and edible fungi and leafy vegetables can be planted in the shade shed. Compared with the solar greenhouse, the land utilization rate has increased from 43.8% to 68.8%, the average daily temperature of the sun shed has increased by 3.8℃, the ground temperature has increased by 4.2℃, the total amount of light incident has increased by an average of 13.5%, and the distance 5cm from the ground has increased by 19.1%. The incidence and pesticide usage are reduced by more than 85%, and the excess heat in the sun shed at noon is supplemented to the shade shed, which can increase the temperature of the shade shed by 3 to 5°C.

double tunnel greenhouse which is The shade shed enhances the heat preservation and stability of the solar greenhouse; at the same time, the shade shed is engaged in early spring planting, which enriches the shade shed planting structure, improves the land utilization rate, and increases the economic benefits significantly. It is recommended to further demonstrate and promote. In addition, the mutual warming effect of the shade and the sun shade, and the comparison of the light between the shade and the sun shade, require further systematic research in the future, with a view to more scientifically explaining the ecological environment of the shade and sun type solar greenhouse. Provide technical basis for chemical utilization.