First, the branches are pruned. For frozen apples lacking branches, the long branches should be used to make up the space, and the cuts are lightly cut within 1-2 years, and the amount of shoots is retained to promote the germination of more branches. Within 3-4 years, each branch should be cut, and after the result, it should be appropriately retracted according to the canopy space, and cultivated into a permanent auxiliary branch or result branch group. This will restore the canopy after 4-5 years of cultivation. The pruning mouth is applied to the callus anti-corrosion film in time to prevent the infection of the bacteria and protect the wound from healing.
Second, the overall antifreeze. For the main branches and the main frozen apple trees, the branches are used, and the branches of the basal buds sprouting at the base are short-cut at the full buds to promote branching. Then, the backbone branches of each level should be cultivated separately, and the results should be shortened within 2 to 3 years to control the results, so as to facilitate the rapid increase of the number of branches. At the same time, we must pay attention to the overall anti-freezing of the tree body, spray the tree guard general to protect the tree body, expel the winter virus insects, and urge the fruit trees to hibernate early and restore vitality. Third, promote development. Although the tree has no pumping phenomenon, the tree body is weak, the new shoots are short-lived, the falling flowers and fruit are more serious, and they are easy to infect diseases. For these fruit trees with less frost damage, foliar fertilizer is used to promote the development of winter shoots. In addition, it is necessary to cut off some flower buds to make it less fruitful, in order to restore the tree potential.
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