Views: 0 Author: Site Editor Publish Time: 2023-09-15 Origin: Site
The insect-proof net uses an artificial barrier to keep pests out of the net, achieving the purpose of preventing insects, diseases and protecting vegetables. In addition, the light reflected and refracted by the insect-proof net also has a certain repellent effect on pests.
The function of insect net
1. Insect-proof: When vegetables are covered with insect-proof nets, they can basically avoid damage by various pests such as cabbage caterpillar, diamondback moth, cabbage exigua, Spodoptera litura, flea beetle, ape leafworm, aphids and other pests.
According to tests, insect-proof nets are 94-97% effective against cabbage caterpillars, diamondback moths, cowpea pod borers and American spotted leafminers, and 90% effective against aphids.
2. Disease prevention: Viral diseases are catastrophic diseases on many types of vegetables, mainly caused by insects, especially aphids. Since the 132gsm anti insect net cuts off the main virus transmission route of pests, it greatly reduces the infection of vegetable viruses, and the control effect is about 80%.
3. Adjust the temperature, soil temperature and humidity: Tests show that in the hot July-August months, in a 25-mesh white insect-proof net, the temperature in the morning and evening is the same as that in the open field, while at noon on a sunny day it is about 1°C lower than that in the open field.
In early spring, from March to April, the temperature inside the shed covered with insect-proof net is 1-2℃ higher than that in the open field, and the ground temperature at 5 cm is 0.5-1℃ higher than that in the open field, which can effectively prevent frost.
The insect-proof net room can reduce the amount of precipitation in the net room when it rains, and the evaporation in the net room can be reduced in sunny days.
4. Block strong light: The light intensity is high in summer, and strong light will inhibit the vegetative growth of vegetable crops, especially leafy vegetables. The insect-proof net can play a certain role in shading and preventing direct strong light.The 20-22 mesh silver gray insect-proof net generally has a shading rate of 20-25%.
Mesh selection
When purchasing insect netting, you should pay attention to the pore size. For vegetable production, 20-32 mesh is suitable, with a width of 1-1.8 meters.
