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对主干和树冠均过高的实生劣种大板栗树,为降低树高,便于管理和促进高产,可采用第一年截主干促枝、第二年改劣换优的方法加以改造。具体操作可分两步进行。1.截主干促枝萌动前,对树势较旺的实生大树,在主干距地面1.8米左右处锯干。对树势中庸和树势较弱的树,分别在主干距地面1.5米和1.2米处
On the trunk and canopy are too high real bad kind of big chestnut tree, in order to reduce the tree height, easy to manage and promote high yield, can be the first year cut off the stem and promote sticks, the second year to change the merits of the method to be transformed. Specific operations can be carried out in two steps. 1. Interception of stems and branches before sprouting, tree vigor more live tree, in the trunk about 1.8 meters from the ground at sawing. The tree moderate and tree vigor weak trees, respectively, in the trunk from the ground 1.5 meters and 1.2 meters