1. Short cuts. In the middle of a year's branch, the middle branch is short, and after cutting, the top branch that grows after germination is strong and the lower branch is weak.
2. Short cuts. Cut off 2/3 of the annual branch, the branches after germination are stronger and are generally used for pruning of main, lateral extension heads and long fruiting branches.
3. Heavy cut. Cut 3/4 to 4/5 of the annual branch, and the growth of the shoot after cutting is strong and strong. It is often used for the development of branches to extend the branch and the lengthy fruit branch, long fruit branch, and middle fruit branch trim.
4. Extremely short cuts. More than 4/5 of annual branches are clipped, and the moderately sturdy shoots after cutting are often used to develop branches and legged shoots.
5. Leave two buds at the base. After cutting, the sprouted shoots are more vigorous and are often used to trim pruning branches.
The actual effect of a short cut consists of three factors: one is the plumpness of the clipped shoots; the other is the length of the cuts; the third is the number and quality of shoots on the cut sticks. Usually the shorter the heavier, the stronger the stimulation of the sprouting and growth potential of the lateral buds, but it is not conducive to the formation of high quality fruiting branches. Sometimes short cuts are too heavy, and there is also a phenomenon of weakening growth. The shorter the lighter, the more germinating the lateral buds, the shorter branches in the middle and lower branches, and the easier to form flower buds. From the full shoots short, due to the high quality of full shoot differentiation, storage of nutrients, can promote the emergence of long shoots, strong growth after cutting. Cut out the axillary buds, then draw short and medium branches, weak growth.
In addition, the severity of short cuts should be determined by the age, tree vigor, and purpose of pruning. For juvenile trees, tree vigor is more prosperous, and for the purpose of cultivating a good and firm tree structure and early results, light and short cuts are used, and sparsely sparse rooms are the main ones. From the beginning of the fruit period to the full fruit period, it is mainly from the fruitful results of peach trees and the establishment of a good tree structure. Therefore, when there are a large number of fruiting branches, a method of appropriately agglomeration of short or thin branches should be adopted. After entering the aging tree, the tree vigor gradually weakens, and the yield declines year by year. During pruning, we must look at the restoration of tree vigor, implement heavy and short cuts, and leave strong shoots under the cut to promote new shoots and rejuvenate the tree vigor. The result is a branch.
Second, the effect of thinning and thinning on the tree is related to the number, nature, thickness, growth potential, and the period of thinning. The removal of strong branches, coarse branches, or perennial branches often weakens the growth potential of the branches above the cut edge, while it has the effect of enhancing the growth of branches below the cut edge. In general, many branches have the effect of weakening the tree vigor and controlling growth. Therefore, the branches that grow too vigorously can be more thinly branched and weak branches that are not sparse or sparse to achieve the purpose of balance. Peeling the development branches can reduce the amount of shoots and leaves, and at the same time reduce the growth of photosynthetic products and roots. Thinning off the flower buds or flower buds with more fruiting branches can increase the amount of leaves and photosynthetic products, and promote root growth. The main purpose of the winter thinning is to open up the light path, improve the ventilation and light transmission conditions, and promote flower buds and fruit development. In addition, the saplings should be lightly sparse (or replaced by branches or long branches instead of thinning). As a result, the trees will be more moderately thinned without affecting the yield.
Third, retraction is a short cut for perennial branches, generally applied to auxiliary branches and branches. Retraction can improve the crown canopy, update the crown, reduce the result site, adjust the extension of the opening angle of the branch, so as to control the development of the crown or branch, enrich the internal hemorrhoids, and extend the results of years. The difference between retraction and short cut is the position of clipping. The intensity of the reaction when the annual branches are truncated is determined by the degree of plumpness of the clipped shoots, and the strength of the response after retraction is determined by the strength of the cut branches. Cut branches, such as leaving strong branches, will grow strong after cutting, is conducive to updating and restoring tree vigor. Cut branches, such as leaving weak branchlets, the growth is weak, more regeneration in the lower branches, conducive to flowering results. Cut out the sprigs and grow moderately. After cutting, they will maintain the golden mean, and they will give rise to sprigs that can grow and produce results.
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