1. Insect control: After vegetables are covered with insect control nets, it can basically avoid the damage of various pests such as cabbage caterpillars, diamondback moths, cabbage armyworms, Spodoptera litura, flea beetles, beetles, and aphids.

2. Disease prevention: Virus disease is a catastrophic disease on a variety of vegetables, mainly caused by insects, especially aphids.
disease. Since the insect control net cuts off the main transmission route of pests, the infection of vegetable viruses is greatly reduced, and the control effect is about 80%.
3. Adjust the temperature, soil temperature and humidity: The test shows that in the hot July-August, in the 25-mesh white insect-proof net, the temperature in the morning and evening is the same as the open field, and on a sunny day, it is about 1℃ lower than the open field at noon. From March to April in early spring, the temperature in the shed covered by the insect-proof net is 1-2°C higher than that in the open field, and the temperature in the 5 cm ground is 0.5-1°C higher than that in the open field, which can effectively prevent frost. The insect-proof net room can reduce the precipitation in the net room when it rains, and the evaporation in the net room can be reduced on sunny days.
4. Shielding from strong light: The intensity of light in summer is high, and strong light will inhibit the vegetative growth of vegetable crops, especially leafy vegetables, and the insect-proof net can play a certain role in shading and preventing direct light from strong light, 20-22 mesh silver-gray insect-proof The net shading rate is generally 20-25%.