Apple imbalance tree pruning method
In the production of apples, due to improper pruning, there are often imbalances in tree strength such as upper and lower strength, lower strength and weakness, and external strength and weakness, resulting in imbalance of distribution of results and decline in yield. The trimming technique of Apple's unbalanced tree is introduced as follows:
First, the outer strong weak tree outside the strong branch, Wangzhi more, and the extension of the tip angle is small; the inner lychee ventilation is poor, thin, and even dead, and does not pay attention to the renewal and rejuvenation of the inner lychee. For the outer strong and weak trees, first adjust the angle of the main and side branches, try to increase the number of branches on the back and sides of the main side, remove the dense branches and perennial branches around the canopy, and improve the light intensity of the inner ridge, which is beneficial to the increase of branches. Nutrition accumulation, enhance growth potential. On the back of the Wang Branch, you can use the method of ring cutting to promote flower length control, or you can shorten the winter cut and cultivate the branch group. The thin branches of the inner scorpion are short-cut at the full buds to enhance their growth potential.
Second, the central leadership of the weak tree under the strong and strong branches, strong buds and short buds, strong branches, rising too fast, resulting in 2 to 3 years old trees appear strong; the first layer is too heavy or too thin Too many branches, less branches and leaves, slow growth and slow growth, limiting the extension of the canopy. In addition, there are too many large branches in the upper middle part of the middle dry, and the opening angle of the main branch is too large, which also affects the growth of one layer and the strong and weak. Under such circumstances, such trees can be removed from the middle and upper parts of the middle and the middle, and the middle branches are left over. The remaining branches are flattened and the erect branches on the back of the backbone are removed as much as possible. For the lower main branch extension head, the middle section method is adopted, and the branches on both sides are shortened, and the amount of branches is increased as soon as possible to enhance the growth potential.
Third, under the strong and weak tree, the central leadership keeps weak branches and weak buds in the year, the main branches of the upper layer are weak, and the main branches of the lower layer are strong and coarse, which will inevitably lead to strong; the three main branches of the base are strong and co-existing. It is easy to cause the phenomenon of "dry neck" and affect the growth of the central leadership. Promote the lower branch, choose the weak branch as the main branch, try to eliminate the Wangzhi, and open the backbone branch angle, ring stripping and promoting the flower, inhibit the growth potential of the main branch of the lower canopy, and adopt summer pruning to promote the formation of flower buds. The first layer of the main branch has more results. Appropriately remove the overly dense branches of the upper main branches, the second and third main branches, and the central leading trunks, using multiple short cuts to speed up the increase of the amount of branches and leaves, control the amount of flowers and fruits, and enhance their growth.
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