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我国黄河故道苹果产区气温高,无霜期长,苹果枝条的年生长量大,果园定植的半成苗一般当年就能形成1.5米左右的主干,可传统的修剪方法是冬剪时仅保留80厘米,到第二年才形成基部第一级骨干枝。这样不仅浪费了树体营养,而且还由于第一级骨干枝过粗,不利于幼树早期的整形修剪。为此,我们试验总结出半成苗早成形技术。
China’s old course of the Yellow River Apple producing areas of high temperature, frost-free period, the annual growth of apple branches, semi-mature orchard planting usually can form about 1.5 meters of the trunk, the traditional pruning method is to retain only 80 cm , The second year to form the backbone of the first backbone of the base. This is not only a waste of tree nutrition, but also because the first level of the backbone is too thick, is not conducive to the early sapling shaping pruning. To this end, we experiment to sum up the semi-early seedling forming technology.