促进苹果幼树提早结果、早期丰产、控制树体大小,是苹果密植丰产栽培的中心问题之一;也是实现果树群体光能利用最优化不可缺少的条件;这样即增进苹果经济系数,提高单位面积产量,合理利用土地资源;也是早见效益的有效方法。 Promote the early results of young saplings of apple, early high yield, control the size of the tree is one of the central problems of apple dense planting and high yield cultivation; It is also an indispensable condition to realize optimal utilization of light energy of the fruit tree group; This will improve apple economic coefficient and increase unit area Yield, rational use of land resources; also effective early effective method.