乔砧密植苹果园,由于栽植过密,刚刚进入盛果期,树冠已经密接,即使通过修剪、断根或施用生长抑制剂也很难达到控制树冠的理想效果。为了解决这一问题,70年代初西北农大就研究成功了一种应用植皮使乔化树变矮化的方法,现简介如下,供广大果农参考应用。 1.使用范围:2～5年生乔砧苹果树。 Joe anvil densely planted apple orchard, due to planting too close, just entered the full fruit period, the crown has been close, even through the pruning, cutting or application of growth inhibitors is also very difficult to achieve the desired effect of crown control. In order to solve this problem, in the early 1970s, Northwest Agricultural University successfully researched and succeeded in a method of dwarfing Qiao tree by applying skin grafting. The introduction is as follows for the reference of the majority of farmers. 1. Use: 2 to 5 years Qiao an apple tree.