The pruning of the main branch extension branches. When the main and lateral branches prolong the weakness of the branches, they can be used in the 2 to 3 years of the main and lateral branches. The back branches with smaller angles of growth and growth are selected as the main branches and extension branches of the lateral branches. Remove the already weakened extensions.
Cultivate new pruning branches. When some of the branches are weak, they should be updated and rejuvenated as early as possible. The appropriate leggy branches can be selected within the canopy to speed up the cultivation and replace it with the backbone branches. For the long branches of the backbone shoots, they were cut in the first 1 to 2 years to make their growth moderate, and the new branches were appropriately shortened in the 3rd to 4th year to promote the rebranching, control the results, and influence the culture of the shoots. The overly dense and weak branches are properly treated. In the 4th to 5th year, new stems can be cultivated to form a new canopy.
Flower buds are pruned by many aging trees. For trees with weak vigor, fewer branches, and more flower buds, the weak branches should be shrunk and weakened, and the new branches should be promoted. The new branches should be short at the plump place, the excessive flower buds must be removed, and the “size year†should be adjusted to reduce the tree body. The burden causes the branches to develop well.
Crown complete aged tree trim. When pruning the canopy of intact aged apple trees, the principle of not only updating, but also retrieving the results is to re-cut, multi-cut, and sparse, to strengthen the restoration of tree vigor, with large shoots retracting, and branchlets to be renewed to stimulate multiple branches. Large branches should be sparsely removed, less wounds made, so as not to weaken the tree potential, shorten the life span, when the short branches, the appropriate withdrawal of the apex of the drooping branches, cut back should be left on the back of the bud on the back, raise the branches open angle, stay more back Medium and short branches and downward shoots.
Crown incomplete tree trim. When pruning senescent trees with incomplete tree crowns and missing branches, use leggy branches to cultivate new canopies. For trees with no central stems and few upper branches, select the appropriate long branches at the upper position and train the center. For trees where the main and collateral branches are not perfect, leggy shoots may be used at the missing branches, and continuous cutting methods may be used to cultivate the adult plants and lateral branches.
Debilitating result of pruning of branches. For the debilitating branches, we must promptly retreat, rejuvenate, promote the development of branches, and gradually form branches and branches. If there is a large internal space and there are no result branches and branches, the appropriate positions can be used for branches or grafting to cultivate the internal litchi group to restore the tree vigor and increase the yield.
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