我们这里苹果树因为腐烂病和严寒的影响,每年损失很大,令果农感到头疼。1993年春季,我从山上挖回20多株5年生以上的山定子树,7月份作了高接换头,1995年即有5林开花,2株挂果,1996年可全部见果。通过嫁接换头,我总结了几个好处。①结果早;②抗旱、抗寒、抗冻,基本不需防寒;③抗腐烂病,高接后的苹果树不用任何药剂处理,长势强壮,没有1株发生腐烂病;④操作简单易行。 Apple trees here because of rot and cold, the annual loss is very large, so that farmers feel a headache. In the spring of 1993, I dug up more than 20 mountain staticene trees over 5 years of age from the mountain. In July, I made a high takeover. In 1995, there were 5 forest blooms and 2 fruit-bearing fruits. In 1996, I saw all fruits. By grafting, I summed up several benefits. ① early results; ② drought, cold, frost, the basic need of cold; ③ anti-rotten disease, high pick apple trees without any drug treatment, strong growth, no 1 rot disease; ④ easy to operate.