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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1年截主干促枝、第2年改劣换优的方法。具体操作方法如下。1截主干促枝萌芽前,对树势较旺的实生大树,在主干距地面1.8m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1.5m和1.2m处锯干。锯后,用利刀削平锯口。萌动后,隐芽会大量萌发,从萌生的新枝中,按
On the trunk and canopy are too high, the real inferior species of large chestnut trees, in order to reduce the tree height, easy to manage and promote high yield, can be used in the first year stems and cuttings, the first 2 years to change the optimal method. Specific methods of operation are as follows. 1 truncation of stems and branches before sprouting, tree vigor is relatively prosperous big tree, in the trunk from the ground about 1.8m saw dry. For trees with moderate and weak tree shores, saw the stems at 1.5m and 1.2m from the ground, respectively. After sawing, cut the saw with a sharp knife. After germination, buds will be a large number of germination, sprouting from the new branch, press