冬季严寒.苹果树主干或主枝易受冻。但是.这些果树还可维持一定的产量,其根系也比较健全、因此对这些果树还应充分利用,在加强肥水管理的基础上,应进行细致修剪。 Winter cold. Apple tree trunk or main branch vulnerable to freezing. However, these fruit trees can also maintain a certain yield and their root system is relatively sound. Therefore, these fruit trees should also be fully utilized. On the basis of strengthening management of fertilizer and water, careful pruning should be carried out.