The main function of shade net is to block the sunlight from the greenhouse. That is to make the light entering the greenhouse decrease in a certain proportion in a certain period of time, thereby reducing the amount of thermal radiation entering the greenhouse, to keep the room from getting too hot.
In the absence of strong light, the temperature is not high, shade net can not always stay in the greenhouse shed. Shade net should be flexibly controlled according to the weather condition, crop species and the requirement of light intensity and temperature in different growing period of crops.
Summer covering is mainly at noon on sunny days, and can be removed in the morning and evening as well as on cloudy days. Sun shade net is usually covered from 9 am to 3 pm on sunny days. In winter, shade net covering is mainly in the evening. The net should be removed in the daytime, while covered in the evening or the cold coming.