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东北地区苹果一般10月份到第二年的4月份处于休眠期,多种病虫也停止活动,大多数在病残枝、叶、树枝干上越冬。这一时期的工作主要有两个,一是剪除、摘掉树上的病枝、僵果,扫除园中枝叶,并集中烧毁;二是药剂涂刷枝干,进行树体消毒。常用药剂为涂白剂,配方为生石灰6公斤、波美20度石硫合剂1公斤、食盐1公斤加清水18公斤,还可加入100克动物油防止涂白剂过早脱落。既可以消毒,又可以防冻,还可以刮除老皮。刮后涂40%福美砷可湿粉100倍液或波美5度石硫合剂。
In northeast China, apples generally fall dormant from April to April of the following year from October to the next year. Various diseases and pests also stop their activities. Most of them are overwintering in diseased branches, leaves and branches. There are mainly two jobs in this period. One is to cut off, remove diseased branches and stiff fruits in the tree, remove branches and leaves in the garden, and concentrate and burn them; Commonly used agents for the whitening agent, formula 6 kg of lime, Bauhinia 20 degrees stone sulfur mixture 1 kg salt 1 kg plus water 18 kg, but also add 100 grams of animal oil to prevent premature whitening agent off. Both can be disinfected, but also antifreeze, but also can cure the old skin. After scraping 40% Fortum arsenic WP 100 times or Baume 5 degrees stone sulfur mixture.