At present, many vegetable farmers use 30-mesh insect-proof nets, while some vegetable farmers use 60-mesh insect-proof nets. At the same time, the colors of insect nets used by vegetable farmers are also black, brown, white, silver, and blue. So what kind of insect net is suitable?
First of all, choose insect nets reasonably according to the pests to be prevented. For example, for some moth and butterfly pests, due to the large size of these pests, vegetable farmers can use insect control nets with relatively few meshes, such as 30-60 mesh insect control nets. However, if there are many weeds and whiteflies outside the shed, it is necessary to prevent them from entering through the holes of the insect-proof net according to the smaller size of the whiteflies. It is recommended that vegetable farmers use denser insect-proof nets, such as 50-60 mesh.
Secondly, choose different colors of insect nets according to different needs. Because thrips have a strong tendency to blue, the use of blue insect-proof nets is easy to attract thrips outside the shed to the surrounding of the greenhouse. Once the insect-proof net is not tightly covered, a large number of thrips will enter the shed and cause harm; Using white insect-proof net, this phenomenon will not occur in the greenhouse, and when used in conjunction with the shading net, it is appropriate to choose white. There is also a silver-gray insect-proof net that has a good repelling effect on aphids, and the black insect-proof net has a significant shading effect, which is not suitable for use in winter and even cloudy days. You can choose according to actual needs.
Generally compared with summer in spring and autumn, when the temperature is lower and the light is weak, white insect-proof nets should be used; in summer, black or silver-gray insect-proof nets should be used in order to take into account the shading and cooling; in areas with serious aphids and virus diseases, in order to drive To avoid aphids and prevent virus diseases, silver-gray insect-proof nets should be used.
Again, when choosing an insect-proof net, you should also pay attention to check whether the insect-proof net is complete. Some vegetable farmers reported that many insect-proof nets they just bought had holes. Therefore, they reminded vegetable farmers that they should unfold the insect-proof nets when purchasing to check whether the insect-proof nets have holes.
However, we suggest that when used alone, you should choose brown or silver-gray, and when used in conjunction with shade nets, choose silver-gray or white, and generally choose 50-60 mesh.