The growth characteristics of the aging apple trees are that the young shoots have a small amount of growth, many branches, many flower buds but few results, and the branchlets in the inner canthus group are dead and dead. The result shows that the parts of the shoots are obviously moved outwards, and the medial malleolus are bald, and the middle and lower parts send more leggy branches. The pruning of this type of aging apple tree is mainly rejuvenation. The main points of pruning are as follows: The retracting and renewing has smaller selection angles for the retraction of the main and lateral branches. The back branches that grow more vigorously and the upright branches instead of the original head to enhance Tree vigor. Branches should be retracted. For all types of branches, they must be properly cut, cut, sparsely drooped, and elevated. The pruning principle is to stay straight, stay strong, stay strong, and stay long. More dense and short fruit branches, retain and rejuvenate the back, anticline, short axis strong branches. Updating the rejuvenation and utilization of legacies is an important measure for updating and rejuvenating the old trees. It is necessary to rationalize and focus on different situations, and to increase the size of the leggy branches and erect standing branches in order to promote branching and increase growth. To reduce the level in the tree structure, we should use the method of retraction to reduce the level as much as possible to reduce the height of the tree, increase the illumination of the internal light, and obtain the updated robust branches at all levels. The renewal of the senescence tree has to be carried out earlier as some apple trees will be partially renewed from the later stage of the fruit, and the management of fertilizer and water must be strengthened. In the same tree, it should be updated and updated on a yearly basis.
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