国光品种幼树的生长特点是一年生枝的萌发力和成枝力均低,延长枝剪截后一般发2至3个坚硬直立的新捎,下部为1至3个叶丛枝或缺枝,在萌发株下部很长一段呈光秃状。幼树提早结果的基础是枝量多,为了增加幼树的枝量,我们做了几种夏剪法的比较试验。一、环剥于5月下旬在距枝条基部10厘米左右处进行环剥,宽度为0.1至0.2厘米。 Guoguang sapling growth characteristics are young branches of the germination force and branching power are low, extending the cut after the cut usually 2 to 3 hard and upright new take, the lower part of 1 to 3 leaves Congzhi or lack of branches, In the lower part of the germination strain was bald. The early result of sapling is based on the amount of shoots, in order to increase the sapling branch number, we have done several summer shear comparison test. First, girdling in late May at about 10 cm from the base of the branches girdling, the width of 0.1 to 0.2 cm.