苹果幼树越冬抽条严重影响着北方地区果树的生产和发展。造成苹果幼树抽条现象的主要原因是冬春季干旱少雪,冻土层厚,解冻迟而地温低。早春气候干燥,多风而水分蒸发剧烈,时而发生倒春寒。病虫为害,造成幼树提早落叶和枝干遍体鳞伤等。新梢生长不充实,修剪不当造成伤口过多,都会降低苹果幼树 The overwintering of young apple trees severely affects the production and development of fruit trees in northern China. The main reason that caused the young apple tree to pull the strip phenomenon is the drought and snow in winter and spring, the thick permafrost layer, and the thawing temperature afterwards. Early spring dry climate, windy and volatile water evaporation, sometimes down spring. Diseases and pests, resulting in saplings early leaves and branches and other body bruises. Not enough growth of new shoots, improper pruning caused by excessive wounds, will reduce apple young trees