1. Economic benefit
Covering with insect-proof nets, it can realize the production of vegetables without drugs or less drugs, thus saving medicine and saving labor. The use of insect nets increases production costs, but because of the long service life of insect nets (4-6 years), it takes a long time (5-10 months) in the year and can be used in multiple stages (planting leafy vegetables can produce 6-8) Period), the cost per input is low (the effect of the disaster year is more obvious). The quality of vegetables is good (no or little pesticide pollution), the effect of increasing production is good.
2.Social benefits.
It has greatly improved the ability of insect control and disaster resistance of vegetables in summer and autumn, and solved the vegetable shortage problem that has troubled leaders at all levels, vegetable farmers and citizens for a long time. Its social effect is obvious.
3.Ecological benefits.
Environmental issues have received increasing attention. The control effect of chemical pesticides is remarkable, but it has exposed many drawbacks. The frequent use of pesticides causes pollution of soil, water and vegetables. The annual poisoning incidents occur due to the ingestion of vegetables contaminated with pesticides. The pest resistance is enhanced and the difficulty of prevention and control is increasing. Plutella xylostella, twill night Pests such as moths have even developed to the point where there is no cure. Insect-proof cover cultivation is to prevent insects through physical control.
