Comprehensive prevention and control of pests and diseases minimizes pesticide residues. The production of pollution-free fruit should use no or less pesticides. Therefore, the prevention and control of pests or diseases in orchards should start from the entire ecological system of fruit trees, such as diseases, weeds and weeds, and comprehensively apply various prevention and control measures to create diseases that are not conducive to the occurrence of pests and weeds, which is conducive to the reproduction of various natural enemies. In the environmental conditions, we must give full play to natural enemies, agricultural measures, and the role of parasitic resistance, but only use low-toxicity, low-residue pesticides when it is really necessary. Through comprehensive management, the pests and diseases are effectively controlled below the allowable range, and the pesticide residues in fruit products are controlled below the national safety standards. The protection and use of natural enemies and the full use of natural enemies can be released in orchards in the early winter before they are collected and parasitized. Strictly control the types of medications, try to use biological pesticides, and do not use drugs or use less drugs when natural enemies are multiplying to protect natural enemies and use natural enemies to control pests. There are mainly four kinds of agricultural measures to prevent and treat pests and diseases: First, reduce the source of pests and diseases. In the winter, the dormancy of fruit trees combined with pruning removes the branches, diseased fruits, and rough skin, removes litter on the surface, and burns or buries them centrally. The second is to cover the mulch in early spring to prevent bacteria and insects from attacking trees. The third is fruit bagging. Implement fruit bagging supporting technology. The fourth is to strengthen the comprehensive management of soil and fertigation, reasonably pruning, strict thinning and fruit thinning, increase tree vigor, increase tree disease resistance, and strictly implement pesticide safety intervals. It is generally required that spraying be stopped 20-30 days before fruit harvesting to ensure that there is no residue in the fruit, or that there is a small amount of residue but not exceeding the standard. Apply fertilizer scientifically. Fertilizer is an important source of nutrition for fruit trees. The principle of fertilization is: No matter what kind of fertilizer is applied, it will not cause pollution to the environment and fruit, and it will not affect the human health caused by residues of harmful substances in fruit. The current state of fertilization of fruit trees should be focused on three points: The first is to implement soil testing and formulated fertilization. That is, according to the nutrient content of the soil, what is lacking to supplement it, to prevent blindly increasing the amount of fertilizer, scientifically fertilize according to soil and fruit tree demand, and to implement the "Guidelines for Fertilizer Application" formulated by the China Green Food Development Center. The second is to increase the organic fertilizer and increase the organic content of orchard soil. Promote the application of green manure and straw to the field. Strengthen fruit picking, storage and transportation management to prevent new pollution. According to the needs of the market, it is harvested at the best fruit quality to prevent premature or late. Before fruit storage or export, it must be strictly grading according to the standard. After grading, the fruit should be packaged with wax paper or plastic mesh cover. All packaging materials should be clean, non-toxic, and have no odor. During the storage period, the fruit should not be kept fresh with chemicals. It should be stored in a dedicated air-conditioned storehouse or constant-temperature store. The store should be ventilated and kept clean. The tools for transporting fruits should be clean and must not be mixed with poisonous and harmful materials to prevent secondary pollution of fruits.

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