一、前言环剥是果树修剪方法之一。我国华北地区枣栽的“开甲”就是主干环剥技术在枣树生产上的应用,对提高枣树座果率和增加产量均有较好的作用。近年来国内各地在苹果、梨幼树提早结果和改变旺树不结果等方面应用环剥技术,效果也很显著。根据过去有关文献报导,环剥对促进生殖生长即成花较有成效,对树体营养生长有抑制的影响,因而在生产上应用不 First, the foreword Girdling is one of the pruning methods of fruit trees. Jujube in North China, China’s “open A” is the backbone of the girdling technology Jujube production applications, to improve the jujube fruit rate and increase production have a better role. In recent years, the application of girdling technology in apple and pear sapling early results and the change of the no-outcome of wangjue tree has been achieved in China. According to the literature in the past reports, girdling to promote reproductive growth that is more effective flowering, tree growth inhibitory effect, so the production is not applied