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开张角度是幼树整形当中的一项关键措施。笔者在苹果、桃树上试验应用扭拿枝法开张角度,取得良好效果。 扭拿枝法即先将枝条扭伤再拿向所需方向和空间中去。应用此法开张角度可在6月上旬至9月中旬晴天中午进行。枝条经扭拿后,角度呈90～120度为宜,呈略下垂状态,这样枝条势力缓和.成花结果稳定。同时应注意调整方位,插空补缺,避免局部密集重叠。 扭拿枝主要针对当年生枝、1年生枝及部分较细的
Opening angle is one of the key measures in young tree shaping. The author in the apple, peach test twist twist branches opening angle, and achieved good results. Twist take the first branches of lawn branch sprain and then take the desired direction and space to go. Apply this method to open the angle of view in early June to mid-September sunny noon. Branches after torsion, the angle was 90 ~ 120 degrees is appropriate, was slightly drooping state, so that the branches of forces to ease. At the same time should pay attention to adjust the position, plug vacancies, to avoid local intensive overlap. Twisted take the main branch for the year branches, 1 year old branches and some finer