Shade net is mainly used in the summer, especially in the southern extension area. Someone said: winter in the north is a piece of white (film), in summer in the south is a black (covering net). Summer in the south by shading cultivation of vegetables has become a major promotion of technology protection measures of disaster prevention. The application in the north is limited to summer vegetable breeding. Summer (6 - August) net covering the main role is to prevent the sun, storm impact, high temperature harm, pests and diseases spread, especially a good role to prevent insect migration.
After a summer cover light rain, moisture, cooling effect; winter and spring cover after there is a certain insulation moisturizing effect.
Principle:  net after moisturizing mask, because of cooling down the windbreak effect, reserve air and outside communication speed will obviously further increase the relative humidity of the air humidity increases, at noon, the largest value generally reached 13-17%, high humidity, soil evaporation decreased, increased soil moisture.
Net is made of polyethylene (HDPE), high density polyethylene, PE, PB, PVC, recycling material, new material, poly ethylene propylene as raw material, ultraviolet stabilizer and anti oxidation treatment, with strong stretching resistance, anti-aging, corrosion resistance, radiation resistance, light, etc.. It is mainly used in vegetable, fragrant, flower, edible fungus, nursery stock, medicinal material, ginseng, Ganoderma lucidum and other crops of protective cultivation and aquaculture, poultry farming, etc., to improve production and other obvious effect.