Introduction:
In the realm of vegetable cultivation, the "insect - proof net" is a well - known facility. Its function is straightforward: to physically separate certain pests from vegetables. It serves as an impassable barrier between the two, and this is a frequently employed technique in the organic vegetable cultivation process.
greenhouse insect net
Insect-proof netting is mainly made of high-density polyethylene material and is produced by adding certain chemical agents such as UV-resistant and anti-aging agents during the manufacturing process. For insect-proof netting, the most crucial factor is the mesh size. Regarding the mesh size, it refers to the size of the direct gaps in the insect-proof grid. Generally, the commonly selected range is between 18 and 50 mesh. This point should be noted when choosing the mesh size of the insect-proof netting for different types of vegetable cultivation.
The choice between insect-proof nets and pests
Regarding the basic selection criteria for insect-proof nets, it mainly depends on the conditions of the vegetable field, different crops, and the needs of different seasons. For the insect-proof nets themselves, the technique data includes width, cell size, filament thickness, color, etc. Regarding this specification, it is determined by the number of meshes. The number of meshes can also be understood as density. In simple terms, the larger number of meshes, the smaller holes, and the better the pest prevention effect. The colors of insect-proof nets are generally as white, green, and black.
Regarding the choice of the specifications of anti insect nets, let's take the small cabbage moth as an example. Its body length is 6-7 millimeters, and the length of its wingspan is 12-16 millimeters. We can choose the density by 18-25 mesh.
Now, let me share some specific data about the insect-proof net with all of you. For instance, the number of warp and weft yarns within a 25.4mm × 25.4mm area. Simply put, there are 20 warp and 20 weft yarns, which means a mesh count of 20. In the industry, they say that one inch (25.4 millimeters) can have 20 mesh, 30 mesh, 50 mesh, or 60 mesh. The larger the mesh count, the denser the insect-proof net.
Now, let me share some specific data about the insect-proof net with all of you. For instance, the number of warp and weft yarns within a 25.4mm × 25.4mm area. Simply put, there are 20 warp and 20 weft yarns, which means a mesh count of 20. In the industry, they say that one inch (25.4 millimeters) can have 20 mesh, 30 mesh, 50 mesh, or 60 mesh. The larger the mesh count, the denser the insect-proof net.
Is it better to choose a denser mesh for the insect-proof net?
Actually, that's not the case. It's not about choosing the mesh with the larger number. For a larger mesh number, it will also affect the ventilation effect and the shading issue. The selection of the insect-proof net only needs to achieve the purpose of preventing insects. The main thing is to consider the size of the pests and the characteristics of the crops. And there is another factor, which is the color of the insect-proof net. If you want to have shading effect, choose black. For controlling aphids, the silver-gray one is better. Besides, the white shading net has better light transmission and is suitable for crops that like sunlight.
the effect of using anti insect net
Installation of insect-proof nets
For insect-proof nets, they are mainly used in facility agriculture. The most common application is in vegetable greenhouses, where they are installed at the ventilation openings. For some others, they are simply put in place to prevent pest damage. Especially for outdoor crops, they only need to cover the plants with insect-proof nets at specific times.
