What is the role of fruit bagging? Fruit bagging can prevent or reduce the destruction of various diseases, insects and birds, reduce pesticide residues and air pollution, improve appearance, improve fruit quality and commercial value, and is one of the important means of producing green food in developed countries. It can be said that bagging is an important part of modern agricultural fruit production technology.
        Specifically, fruit bagging has the following effects:
        1. Prevent (or reduce) disease, insects and birds. According to the survey, many fruits can completely prevent various pests such as diptera pests, slime insects, lepidopteran pests, fruit moths, coleoptera pests, gold beetles, beetles and hemiptera pests. Class, etc. The control effect on fruit bats and birds also exceeds 95%. In addition, in recent years, the incidence of brown rot and black spot disease (spot disease) and soot dust has been greatly reduced, bagged disease has been reduced by 78.9%, brown spot disease by 71.2%, and soot dust. The disease was reduced by 68%.
       2. Improve appearance and promote coloring. The coloration of fruits during maturation is mainly composed of chlorophyll, carotenoids and anthocyanins. Leaf leaves are formed during fruit expansion and the latter two are formed during maturity. After bagging, it can significantly inhibit the synthesis of chlorophyll and promote the formation of carotenoids and anthocyanins in the dark environment. As a result, most fruits are colored more quickly and evenly after bagging in the middle and late stages. At the same time, because the fruit grows in a relatively stable environment after bagging, it is not affected by external pollution, friction and damage, resulting in cell growth and tenderness, smooth and smooth skin, and bright color.
        3. Reduce pesticide residues. Fruit bagging can reduce the number of sprays and greatly reduce pesticide residues. According to the data, the comparison between bagging and non-bagging reduced the residual by 45-84.85% after 7 days of spraying with 50% methamidophos.

        4. Reduce pollution. At present, the common harmful substances in the air are sulfur dioxide, fluoride and some dust and fly ash containing heavy metal elements. Sulfur dioxide and fluoride are extremely detrimental to crop growth. Lighter chlorosis and severe browning and necrosis. In addition to causing damage to crops, atmospheric pollution containing heavy metals can promote the reproduction of certain pest populations and cause pests. Bagging can greatly reduce the above-mentioned pollution, and can effectively improve the appearance and commodity value.