首先要结合冬季修剪,剪去病虫枝。秋末冬初,温度逐渐降低,各种病虫以不同的形态寻找越冬场所。有的以卵在枝条上越冬,如天幕毛虫,苹果红蜘蛛、果苔螨等;有的隐藏在树上的绳索、撑棍上越冬,如山楂红蜘蛛;还有的病原菌在僵果、霉桩死芽上越冬,如苹果炭疽病菌等,因此要结合冬剪,剪去树上的病虫枝及残留在树上的僵果、绳索等并集中烧毁。 二是彻底刮除老翘皮,并将树干涂白,害虫除在病虫枝及树上的僵果、绳索上越冬外,还有相当一部分害虫病菌在果树的粗皮、老翘皮及病疤处越冬,如梨星毛虫,山楂红蜘蛛、李始叶螨、腐烂病菌等,因此要用刀将其刮掉集中烧毁,并 First of all, combined with winter pruning, cut off pest branches. Autumn late winter, the temperature gradually decreased, various pests and diseases in different forms to find places for winter. Some of the eggs in the branches of the winter, such as the sky curtain caterpillars, apple spider mites, moss and other fruit moths; some hidden in the tree ropes, strut sticks on the winter, such as hawthorn spider mite; Pile dead buds overwintering, such as apple anthracnose and so on, so to combine with winter shears, cut off the tree pests and branches in the tree and the dead fruit, ropes and other concentrated and burnt. The second is the complete curettage of the old Alice, and the tree trunk white, pests and insects in addition to the branches and trees in the dead trees, winters on the ropes, but also a considerable part of the pest bacteria in the bark of the trees, the old Alice skin and scars Overwintering, such as pear caterpillars, hawthorn spider mite, spider mite leaves, rot bacteria, etc., so you want to use a knife to scrape away the concentration and burned, and