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老梨树更新复壮修剪技术梨树一般在４０年生以上时，就开始出现主枝基部光秃，延长枝细弱下垂，内膛空虚，结果部位外移，产量下降，果实品质变劣的衰老现象。采取适当的修剪技术，促使树体更新复壮，以延长盛果期年限，是老龄梨树管理的重要技术。１疏枝从基部疏除过于密...
Pear tree renewal rejuvenation pruning techniques Pears generally more than 40 years of age, began to appear bare branches of the main branch, extending the weak branches hanging, hollow bore, the results of part of the relocation, yield decline, deterioration of fruit quality aging phenomenon. Take appropriate pruning techniques to promote renewal and rejuvenation of the tree to extend the full fruit period is an important technology for the management of old pear tree. 1 thin branches thinning from the base too dense ...