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一、大中枝的修剪: 对有一定树形的梨树大中枝,仍需保持骨架枝的生长优势,使其延长枝缓慢延伸,修剪时对影响骨架生长的大中枝组要进行重回缩,一般不采用全枝疏间的方法;长势中等的大中枝,根据壮弱程度进行轻度或中度回缩,使顶梢能发生50厘米左右的新梢;对衰弱细长的枝组要根据负载能力,回缩复壮。回缩程度的轻、中、重一般是指回缩时剪掉的长度和枝芽的数量。剪掉长度或枝芽数占全枝长度或全枝芽数
First, the large branches pruning: pear tree branches have a certain tree, you still need to maintain the growth advantages of the skeleton branches, so that it extends the slow extension of branches, pruning affect the skeleton growth of large and medium branches to be heavy Retraction, generally do not use the whole branch of sparse method; medium and large growing branches, according to the degree of mild or moderate retraction, so that the top can occur about 50 cm of new shoots; weak slender Zhizu group according to the load capacity, retractable rejuvenation. The degree of retraction of light, medium and heavy generally refers to the length of retraction and the number of branches buds. Cut off the length or number of branches accounted for the whole branch length or number of branches