苹果树大枝过多,造成树形紊乱,光照恶化,应该及时疏除部份大枝。大枝疏除伤疤愈合与品种、疏除时间、伤疤大小以及疏除部位具有密切的关系。据调查,1980年春天疏除大枝,到1983年10月调查,元帅植株伤疤愈合率最高达88.69%,其次青香蕉为75.84%;金冠最低仅66.48%;三个品 Apple tree branches too much, resulting in tree disorder, deterioration of light, should be promptly sparse part of the big branches. Large sparse scar wound healing and variety, sparse time, scar size and sparse sites are closely related. According to the survey, in the spring of 1980, the major branches were sparsely dissected. By October 1983, the healing rate of the marshal was up to 88.69%, followed by the green banana at 75.84%, the lowest at the crown of 66.48%, and the three items