The greenhouse protective net can play a certain role in shading and shading. bird nets for catching birds are generally black and white. The commonly used silver-gray has a good repelling effect on aphids. The color can be selected according to the actual application requirements. However, when used alone, it is recommended to choose silver or black, and when used in combination with tinting, white is recommended. Grids are usually chosen between 20 and 40 grids.
The insect-proof net should be completely closed, and the surrounding area should be firmly pressed with soil and firmly fixed with laminated lines. Doors entering and exiting large and medium-sized shelves and greenhouses need to be installed with inspection and protection nets, and be careful to close them when entering and leaving. Cultivation of small arched protection nets, the height is significantly higher than the crops. It is essential to avoid leaves sticking to the inserted protective net and to prevent pests from eating or laying eggs outside the net. The inspection and protection net used to close the air outlet shall not have a gap with the transparent cover, so as not to leave an entry and exit channel for pests. Check and repair holes and gaps inserted into the protective mesh at any time.
Compared with summer, the temperature is higher in spring and autumn. For light-colored walls, choose white protection nets. In summer, choose black shade nets or silver protection nets. Pay attention to shading and cooling. In areas with serious aphids and virus diseases, choose shade net. The shade net company‘s gray plug-in protective net is used to prevent aphids. In order to prevent virus diseases, it also has a certain thermal insulation effect in winter.