秋子梨系统在开原县的主要品种有:尖把梨、小核白、花盖梨、香水梨等。历史上最高年产量(1966年)1,700万斤。目前这些树大部分进入衰老期,树势衰颓,内膛光秃,结果部位减少,座果率低,产量逐年下降。 为了延长这些老梨树的经济寿命,提高产量和果品质量,必须进行更新复壮。 更新修剪必须在加强土肥水管理的基础上,以“压缩树冠、恢复树势、控制外围、促进内膛”为原则,采取缩、疏、截的修剪方法。 Autumn pear system in Kaiyuan County, the main varieties are: sharp pears, small white nuclear, flower cover pear, pear perfume and so on. The highest annual production in history (1966) 1,700 kg. At present, most of these trees enter the decay period, the trees decline, the bore is bare, the result parts are reduced, the fruit set rate is low, and the output declines year by year. In order to extend the economic life of these old pear trees and improve the quality of their output and fruit, they must be renewed and rejuvenated. Pruning update must be based on strengthening the management of soil and fertilizer, to “compress the canopy, restore the tree, control the periphery, to promote the bore” principle, to reduce, sparse, cut the pruning method.