前些年我市在苹果发展过程中 ,由于提倡了较密栽植 ,而忽视了树形管理 ,使大部分果园出现了过密现象 ,导致树体紊乱 ,通风透光不良 ,果品质量下降。为了解决树体郁闭问题 ,近年来我们在树形改造技术方面进行了一些探索 ,现介绍如下 :一、根据不同情况确定不同的改造方法　　 ( A few years ago in our city in the apple development process, due to promote a more dense planting, and ignored the tree management, so that most of the orchard over-density phenomenon, resulting in tree disorder, poor ventilation and light, fruit quality declines. In order to solve the tree canopy problem, in recent years we have conducted some exploration in the tree transformation technology, are introduced as follows: First, according to different circumstances to determine the different transformation methods