一、大核桃树的修剪大核桃树是指进入盛果期以后的大树。盛果期的核桃树,树形已定,骨架形成,其特点是营养生长和生殖生长同步进行。但由于树冠外围枝条量增多,内膛通风不良,小枝容易枯死。因此,修剪时应着重调整生长与结果的关系。对冠内的密挤、并生、下垂、重叠、细弱、干枯、交叉和病虫危害枝条,一般都应从基部疏除,改善通风透光条件,减少树体营养消耗,集中供应结果。如 First, the large walnut pruning Large walnut refers to the tree after entering the fruitful period. Full-fruit walnut trees, trees have been set, the formation of the skeleton, which is characterized by vegetative and reproductive growth simultaneously. However, due to the increase in crown peripheral branches, poor ventilation bore, branchlets easy to die. Therefore, pruning should focus on adjusting the relationship between growth and outcome. In crowns crowded, crowded, drooping, overlapping, weak, dry, cross and insect pest damage branches, generally should be sparse from the base, improve the ventilation and light conditions, reduce the consumption of tree nutrition, centralized supply results. Such as