Insect net selection is an anti-aging, anti-ultraviolet and other chemical additives of high-quality polyethylene raw materials, drawn by weaving, shaped like screens, with high tensile strength, heat and water resistance, corrosion resistance, anti-aging , non-toxic and tasteless features. There are various colors such as black, white and silver gray on the production insect nets, and the net color can be selected according to the needs of use. When used alone, silver gray (silver gray has a good repellent effect against aphids) or black should be selected. When used in conjunction with a sunshade net, white is preferred, and 22 mesh is generally preferred.

Covering techniques Summer and autumn vegetables are generally covered with insect-proof nets. For the long growing period, high stalks (or scaffolding) of vegetables need to be grown in large and medium sheds for easy management and harvesting. The fast-growing leafy vegetables cultivated in summer and autumn have a relatively short growing period and relatively concentrated harvesting, and can be covered by small arches. In late autumn, deep winter, early spring and off-season cultivation, the air outlet above the membrane, the air outlet at the roof, the shed door lined with the insect net, and the compaction line pressed, can not only play the role of pest control, but also save costs. .

Precautions to kill the larvae in time. After the sheds cover the insect nets, some pests can also spread through the soil, seeds and seedlings. Therefore, high-temperature sealed enclosures or low-toxic pesticides are used to kill parasites and larvae in the soil before sowing or planting. When planting seedlings, it is advisable to bring herbs into the shed and pick out pest-free, robust plants that are not infected by the virus.

Strictly strengthen the daily management of the shed to enter and leave the shed to close the shed door tightly to prevent pests from taking advantage of it; to sterilize the utensils before carrying out agricultural operations (such as grafting, pruning, snoring, and topping) to prevent the virus from passing through the wound. To ensure the use of insect nets.

Do a good job during the production of other aftermath management should always check the insect net with or without tears, once found should be repaired in time to ensure that the net room no pest invasion.

Dental Whitening Machine

Teeth Whitening Machine,Laser Teeth Whitening Machine,Led Teeth Whitening Machine,Professional Teeth Whitening Machine

Suzhou Escomedical Equipment Co.,Ltd , https://www.escodental.com