果树嫁接是发展和改造果树的必要途径。在嫁接技术上,我国农民积累了丰富的经验,一般在芽接上成活率比较高而且稳定。但是在枝接方面,特别是春季高接换种,有些传统方法比较费工,成活率往往受气候的影响而不稳定;有些难活树种一般成活率比较低。为了达到比较理想的成活率,必须对砧木和接穗的愈合过程进行研究,搞清愈伤组织形成的条件,从而使群众的嫁接经验上升到理论,进一步改进嫁接技术。 Grafting fruit trees is a necessary way to develop and rebuild fruit trees. In the grafting technology, our farmers have accumulated rich experience, the survival rate is generally higher and stable in bud connection. However, in the area of ​​branches, especially in the spring, there are some traditional methods that are more labor-intensive and the survival rate is often affected by the weather and unstable. In some wild species, the general survival rate is relatively low. In order to achieve the ideal survival rate, we must study the process of rootstock and scion healing, clarify the conditions for the formation of callus, so that the people’s grafting experience rose to the theory and further improve the grafting technology.