At present, many farmers use 40 mesh anti insect net, and some farmers use 60 mesh anti insect net. At the same time, the color of anti insect net used by farmers also includes black, coffee, white, silver and blue. So what kind of insect net mesh is suitable?
First of all, according to the pest to be prevented, reasonable selection of insect screen. For example, in autumn, many pests begin to move to the shed, especially some moth and butterfly pests. Due to the large size of these pests, vegetable farmers can use relatively small mesh insect net greenhous mesh, such as 30-60 mesh agricultural insect net. However, for those with more weeds and whiteflies outside the shed, it is necessary to prevent them from entering through the holes of the insect mesh net according to the small size of whiteflies. It is suggested that vegetable farmers use a dense net for vegetables, such as 40-60 mesh.
Secondly, according to different needs to choose different colors of anti insect net mesh. Because thrips have a strong preference for blue, it is easy to attract thrips outside the shed to the greenhouse by using the blue agriculture anti insect net. Once the insect proof net is not tightly covered, a large number of thrips will enter the shed and cause harm. However, if the white insect prevention net is used, this phenomenon will not occur in the greenhouse. When it is used with the sunshade net, it is better to choose white. In addition, a silver gray insect screen for trees has a good repellent effect on aphids, and the greenhous anti insect net has a significant shading effect, which is not suitable for use in winter and cloudy days. You can choose according to the actual needs.
Generally, in spring and autumn, compared with summer, the temperature is lower and the light is weaker, so it is better to choose white insect proof net; in summer, in order to give consideration to shading and cooling, it is better to choose black or silver grey insect proof net; in areas where aphids and virus diseases are serious, it is better to choose silver grey insect proof net in order to drive away aphids and prevent virus diseases.
Thirdly, when selecting the insect netting, we should also pay attention to check whether the insect proof net is complete. Some farmers reflect that many newly bought insect proof nets have holes, so they remind vegetable farmers that they should expand the insect proof nets when they buy and check whether there are holes in the nets.
However, it is suggested that coffee color and silver gray should be selected when used alone, and silver gray and white should be selected when used together with shading net, and the mesh size is generally 40-60 mesh.
