秋末冬初各种果树病虫进入冬眠期,有的附着在枯枝落叶上,有的钻入树木粗皮缝隙中,如梨星毛虫、梨小食心虫、苹果腐烂病菌、红蜘蛛等都在树木粗皮翘皮缝隙中越冬,在越冬期间,刮去粗皮和枯枝落叶,集中烧毁,是防治病虫的有效方法之一。 Early autumn and early winter all kinds of fruit pests into the hibernation period, and some attached to the litter, and some bored into the cracks in the trees, such as pear caterpillars, pears moth, apple rot bacteria, spider mites and so on the tree bark It is one of the effective ways to prevent and control pests and diseases during the overwintering in skimmer crevices. During the wintering period, the bark and litter are scraped off and burned centrally.