我通过十几年的果树教学并不断的进行观察试验对比，认为：嫁接枝芽的成活，有一个营养供应逐步转换过程，枝、芽的成活先是由接穗本身的枝、芽供应营养，后转换成自身制造营养而成活。在果树嫁接后，如果采用营养供应的分步调整技术果树嫁接成活率可达到95%-98%；可有效防止树 Through more than ten years of fruit trees teaching and continuous observation and comparison, I believe that: the survival of grafted buds, there is a gradual conversion process of nutrient supply, branches, buds survive first by the scion itself branches, buds supply nutrition, after Converted into their own manufacturing nutrition and survival. Grafted fruit trees, if the nutrition supply step by step adjustment technology fruit tree graft survival rate can reach 95% -98%; can effectively prevent the tree