正确判断果树树势强与弱,是制定和落实果园生产管理技术方案的重要依据。树势强弱一般可根据果树枝、叶、芽的生长发育状况来判断。 一、枝条生长状况 1.枝条长度。初果期以前的幼龄果树,外围新梢(树冠外围骨干枝延长头)年生长量在60～70厘米的属于中等长 Correctly judging the vigor and weakness of fruit trees is an important basis for formulating and implementing the technical plan of orchard production management. The strength of the tree generally can be judged according to the growth and development of the fruit tree branches, leaves and buds. First, the growth of branches 1. Branches length. Young fruit trees before the beginning of the fruit period, peripheral shoots (trunk branches around the trunk extension head) annual growth in the 60 to 70 cm belong to medium length