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1.打开光路。树冠郁闭通风透光不良是造成梨树下部和内膛枝枯死形成“光腿”的主要原因。因此要对梨树实行“落头”和扩冠(用拉、撑等法开张角度扩冠),并对各部的密集大枝进行适当的疏除或回缩改造成辅养枝,使微风和阳光进入内膛,为“光腿枝”创造萌生枝条必需的光照条件和着生空间。
1. Open the light path. Canopy crown closed ventilation is poor light is caused by the lower part of the pear tree and bore the main cause of the formation of “bare legs”. Therefore, it is necessary to carry out the “head-dropping” and crown expansion of the pear tree (expand the crown with the angle of pulling and supporting etc.) and carry out the appropriate thinning or retraction of the dense branches of the ministries to supplement the branches and breeze and sunshine Into the bore, as the “light leg” to create the necessary branches of the illumination conditions and living space.