1. greenhouse cover: the insect net is covered directly on the greenhouse rack, and the surrounding soil is pressed tightly with brick. The top of the canopy should be tightened to prevent the strong wind in summer. Leave the front door to open the cover for convenient access. Close doors should be closed at all times to prevent spawning in the flying shed. At the same time, we should check regularly whether there is any tear in the insect net (especially the longer service life). Once it is found, it should be repaired in time to ensure that there is no pest infestation in the net room.

2. small arch sheds cover: bamboo slices or steel bars are bent into arch sheds on the surface of field border, and insect proof nets are covered on the arch.

According to statistics from the relevant organizations of the United Nations, pesticide poisoning has occurred in seven hundred and fifty thousand people worldwide, and nearly twenty thousand people have been killed. In recent years, according to statistics from the Ministry of agriculture and the Ministry of health, there are more than one hundred thousand pesticide poisoning cases each year. Most of these poisonings are food poisoning caused by pesticide residues in vegetables. How amazing it is. From the serious pollution of vegetable pesticide, we have seen the urgency of popularizing the use of pest control net.