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How to choose the most suitable anti insect net
Vegetable greenhouse insect-proof net is a kind of insect-proof net commonly used in greenhouse construction. As the name suggests, the insect-proof net is mainly used to prevent pests. Insect control nets are aimed at different seasons and regions, mainly for vegetable pests, such as diamondback moth, cabbage caterpillar, beet armyworm, and Spodoptera litura. It is still difficult to control, especially leafy vegetables, which have been difficult to grow.
The selection of insect-proof nets for vegetable greenhouses should be determined according to the types of local pests and climatic factors. Under normal circumstances, on the premise of preventing pests from invading, choose an insect-proof net with a large mesh to improve the permeability of the net room. Generally, white 40-mesh insect-proof net should be used. While preventing the invasion of butterfly and moth pests, silver Gray also has a good repelling effect on aphids.
Vegetable greenhouse insect-proof net is a kind of mesh fabric made of polyethylene with anti-aging, anti-ultraviolet and other chemical additives as the main raw material. It has high tensile strength, heat resistance, water resistance, corrosion resistance and aging resistance. , non-toxic and tasteless, easy disposal of waste and other advantages. Can prevent common pests such as flies, mosquitoes, etc. Regular use and collection are light, if new materials are used and properly stored, the lifespan can reach about 3-5 years.
1. Select the number of meshes: In spring, the main purpose is to prevent planthoppers and thrips. It is necessary to choose a larger number of meshes, generally 40-60 meshes. In summer, moths and butterflies are mainly released, and 30-60 orders can be selected according to the size of the insect body.
2. Color selection: When using insect-proof nets and shade nets in vegetable greenhouses, white and silver-gray ones should be selected. In spring, when the light is weak, white should be chosen. Keep good shade in summer.
3. Selection of materials: The materials used for the production of insect-proof nets for vegetable greenhouses are nothing more than nylon, plastic materials polypropylene and polyethylene. Polyethylene has high tensile strength and corrosion resistance.
