我省各梨产区的老梨树,有很多没有进行过整形修剪,造成主干高,树体大,主枝多,层次不大明显;枝条杂乱,且多集中树冠上部,树冠中下部光秃现象严重,内膛空虚。因此历年产量不高,或大、小年现象严重。新建的果园,也有不少梨树由于整形修剪工作未曾合理进行,形成放任 There are many old pear trees in pear producing areas in our province, many of them have not been subjected to plastic trimming, resulting in tall trunk, large tree trunk and many main branches with little obvious gradation; branches are disorderly and mostly concentrated in the upper part of tree crown; The phenomenon is serious, hollow inside. Therefore, the annual output is not high, or large, small-year phenomenon is serious. New orchards, there are many pear pruning because the work has not been reasonable, the formation of laissez-faire