我省自发展矮化中间砧苹果树以来,遇到的主要问题之一是其抗寒、越冬性问题。由于不少地方的矮砧苹果发生越冬死亡(朝阳地区尤甚),造成果园整齐度低,产量不高,因此,影响了人们发展矮砧苹果的积极性。为了弄清矮砧苹果越冬死亡的原因,探明不同矮砧的抗寒能力,选择适宜于辽西半干旱地区发展的矮 Since the development of dwarfing apple trees in our province, one of the major problems we encountered is its cold resistance and overwintering. Due to the overwintering death of dwarf an apple in many places (especially in the Chaoyang area), the orchard has low uniformity and low yield, thus affecting the enthusiasm of people to develop dwarf apple. In order to find out the reasons for the death of apple trees during the overwintering period and to find out the ability of cold resistance of different dwarf anvils,