The sunshade net is mainly used in summer, especially in the south, where the promotion area is large. Some people have described it as: in the winter in the north, it is white (film-covered), and in the south in summer, it is black (covered with a sunshade net). Cultivation of vegetables using shade nets in the south in summer has become a major technical measure for disaster prevention and protection. Northern applications are also limited to summer vegetable seedlings. In summer (June-August), the shading net mainly plays a role in preventing the scorching sun, the impact of heavy rain, the danger of high temperature, and the spread of diseases and insect pests, especially it plays a very good role in preventing the migration of insect pests.
After summer coverage, it plays a role of blocking light, rain, moisture, and temperature; after winter and spring coverage, it also has a certain heat preservation and humidification effect.