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幼龄苹果树常易出现上强下弱、上弱下强、上下弱中间强、三大主枝强弱不均等现象。这种长势的苹果树,由于树体结构不合理,枝条和结果分布不匀,空间、光能浪费较大,结果面积小,单株产量低,从而影响产量和经济效益。因此,应针对不同类型,及时采取相应的措施加以纠正。一、上强下弱树干性强,层次明显的金冠等品种易发生这种现象,纠正措施是:1.夏季在距第一层主枝上段10厘米处的中心干上,进行环剥倒贴皮,使向下输送光合产物的通道
Young apple trees often appear on the strong weak, strong on the weak, up and down the weak middle strong, three main branches of the phenomenon of unequal strength. This growing apple tree, due to unreasonable tree structure, uneven distribution of branches and results, large space and light energy waste, small result area and low yield per plant, thus affecting yield and economic benefits. Therefore, we should take different measures to correct them in time. First, the strong strong weak under the trunk, the obvious level of Golden Delicious and other varieties prone to this phenomenon, the corrective measures are: 1. Summer in the first layer from the main branch 10 cm above the center dry, , So that the photosynthetic product channel down