苹果幼树冬季冻害在我国北方苹果产区相当严重。发生冻害的主要是幼树一年生枝抽条,情况严重者多年生枝抽条也发生,甚至整株冻死。特别是红富士不甚抗寒,冻害非常严重,据调查,新建的红富士一年生苹果园,抽条率达30％～80％。由于幼树抽条,造成翌年春季萌芽不整齐,树势衰弱,缺株断垄,严重地影响了幼树的早果丰产。要做好苹果幼树的防寒防冻,应从以下两个方面着手。 Apple frost damage in winter in northern apple-growing areas in China is quite serious. Frost damage occurs mainly saplings annual shoots, pests in serious cases also took place pumping, and even the whole body froze to death. In particular, Fuji is not very cold, frost damage is very serious, according to the survey, the new Red Fuji annual apple orchard, pumping rate of 30% to 80%. As a result of saplings, resulting in the following spring sprout irregularities, weak trees, lack of broken ridge, severely affected the saplings of early fruit yield. To do a good job of apple tree frost, should start from the following two aspects.