我市对苹果树的修剪,开始是照搬苏联的一套剪法,强调骨架坚硬,不注意提早结果,因此,造成了苹果幼树十年不结果的被动局面。后来我们总结教训,改变剪法,并吸收新乡地区“三级小头”的经验,对苹果幼树实行了轻剪技术。对苹果幼树轻剪的理论根据大冠稀植盛行的五十年代,有个为机械造形服务的理论叫“双重作用”原理。这个原理认为冬季修剪对局部生长是促进的,对 The pruning of the apple tree in our city started with copying a set of scissors method of the Soviet Union, stressing that the skeleton is hard and did not pay attention to the early result, thus causing the passive situation of the apple seedling ten years of no result. Later, we summed up the lesson, change the shear method, and absorb the experience of “three small heads” in Xinxiang area, and implement the light cutting technique on young apple trees. The theory of young cropping of apple trees According to Grand Fifties popular in the fifties, there is a theory of mechanical forming service called “dual role” principle. This principle suggests that winter pruning promotes local growth