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目前我区大部分盛果期的苹果树产量低而不稳,除与晚霜和其它管理措施有关外,主要是由于修剪不当,造成树冠内膛光照条件恶化所致。盛果期的修剪主要是打开光路,改善树体光照条件,增进光合作用,只有这样才有利于成花结果。应解决好四个调整和一个培养。一、对骨干棱角度的调整。第一层主枝角度维持在70度左右比较适宜,第二层以上主枝角度保持50度即可,其方法:(1)撑或拉;(2)以侧代主;(3)背后枝多次小换头。当骨干枝较粗不易拉开时,可用以侧代主的方法开张角度;骨干枝较细能撑开的,可在5月下旬用木棒或铁丝拉;对二
At present, the majority of fruit trees in our region have low and unstable apple tree production, except for night creams and other management measures, which are mainly due to improper trimming, resulting in deteriorating light conditions in the canopy. Fruit pruning is to open the main light path to improve the light conditions of trees to enhance photosynthesis, the only way it is conducive to the results of the flowering. Four adjustments and one training should be solved. First, the angular adjustment of the backbone. The first main branch of the angle of 70 degrees is more appropriate to maintain the main branch of the second level above the main angle can be maintained at 50 degrees, the method: (1) support or pull; (2) to the main generation side; (3) Many times for a small change. When the backbone of the branch is not easy to pull away when the main method can be used to open the side of the angle of the main branches of the branch can be more propped open in late May with a stick or wire pull;