I. Prevention and control of pests
After the apple is harvested, leafminers, cockroaches, leaf roller moths, etc. begin to thrive in the branches and rough cracks as winter eels, eggs or larvae. Therefore, after the fruit is harvested, pests and branches need to be cut off, the rough skin of the trunk must be scraped off, and the overwintering pests should be trapped by the bundling grass. After collection, they are collectively burned to reduce the number of insect pests in the coming year. After the fall of autumn, apple aphid, peach borer, and beetle will infiltrate into the soil around the roots and overwinter, combined with autumn fertilization, deep-turning the tree disk, turning the diseased leaves, residual fruits, weeds, and the wintering pests in the ground. Into the depths of the soil, so that it can not be unearthed next year, while the soil overwintering pests out of the ground and frozen to death. Placement of agricultural implements or abandoned houses in or near the orchard is an ideal place for wintering for pests such as cockroaches. Spraying or spraying fumigation after the house is closed in the winter or early spring is particularly effective.
Second, the prevention and treatment of diseases
The diseases of apple branches mainly include rotenosis, rot, and dry rot. They are important diseases that affect the growth of fruit trees and the quality of fruit. They mainly occur in adult tree, and young tree with poor management measures also occur. From the perspective of the occurrence of disease, the best time for drug use is in the middle or late November, and the effect of medication before sprouting in spring is not good. Combine scraping bark and scrape off lesions or lesions. Immediately after the fruit is harvested, the pedicel wound is protected.
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