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梨树历来以主干分展及变则主干形的树形摸式进行整形修剪。在幼龄阶段短截较多,修剪量很大,往往造成树体生长慢、结果晚、产量低。自1970年以来,我们在缩小株行距的中冠园中试用梨树双层半圆形的整形方式及多留长放的修剪方法。1973年开始进行系统研究。九年来,通过对比试验,从中看出双层半圆形及多留长放修剪是目前中冠园的一个较好的整形修剪方法。它适应梨树生长结果习性,可以收到生长快、结果早、产量高、骨架牢固的效果。现将试验研究经过及效果介绍如下,供研究修剪理论及生产应用的参考。
Pear has always been truncated trunk and change the main shape of the tree-shaped modal pruning. In young age more short cut, a large amount of pruning, often resulting in slow growth of trees, the results of late, low yield. Since 1970, we have experimented with the double-layer, semi-circular shape of the pear tree and the pruning method with more long-leggings in the Zhongguan Garden with reduced row spacing. In 1973 began a systematic study. Nine years, through the comparative test, we can see that the double-layer semicircular and more long-pruning pruning is the crown of a better plastic pruning method. It adapts to the growing habits of pear trees and can receive fast growth, early fruiting, high yield and firm skeleton effect. The experimental study is now introduced and the effect is as follows, for the study of pruning theory and production and application of reference.