由于多年采用轻剪长放，不留背上枝组的修剪方法，缩短了结果枝组的结果年限，同时也加剧了大小年的不良循环。为改进这一修剪方法，我们根据苹果的生物学特性进行了利用二芽枝（竞争枝）培养枝组的试验。１利用二芽枝培养枝组的方法。苹果树进入４年生以后，每年冬剪时，... As a result of years of using light-cut and long-term release, leaving no pruning group pruning method, shorten the results Zhizu results, but also exacerbated the size of the cycle of bad. To improve this pruning method, we conducted experiments using two shoots (competition shoots) to cultivate shoots according to the biological characteristics of apples. 1 using two buds branch group training methods. Apple trees into the 4-year-old after each winter cut, ...