Apple production, due to improper trimming, often appears strong and weak, strong and weak on the weak and strong outside the weak and other tree imbalance phenomenon, resulting in the imbalance in the distribution of results, production decline. The trimming techniques of the Apple Imbalance Tree are described below:
First, the strong outside the weak tree peripheral strong branching, Wang branch more, and extension of the shoot angle is small; internal litchi ventilation and light transmission conditions are poor, thin, and even dead, and pay attention to the internal litchi update rejuvenation. For weak trees within the external strong, first adjust the main and collateral angles, increase the number of branches behind and on both sides of the main side as much as possible, eliminate dense branches and perennial branches on the outside of the crown, increase the light intensity of the inner canopy, and increase the branches. Accumulation of nutrients enhances growth potential. On the back of the Wang Thu can be controlled by the method of ring cutting and flower control, but also when the short winter cut, culture sticks. Thin branches of the internal malleolus are cut short at full buds to enhance their growth potential.
Second, the strong Central Committee under the leadership of weak trees to stay year after year, strong, short and strong buds, strong branches, rising too fast, resulting in 2 to 3 years old trees appear strong phenomenon; the first layer of short cut too heavy or sparse Excessive branches, small amount of branches and leaves, thick and slow growth, limiting the extension of the tree canopy. In addition, there are too many large branches in the middle and upper part of the trunk, and the opening angle of one layer of the main branch is too large, which also affects the growth of one layer of branches and the phenomenon of strong and weak. Under such circumstances, in general, the trees can be evacuated from the middle and upper parts of the dense and over-rough branches, leaving the mediocre branches as their heads, and the remaining branches flattening and laying them slowly. At the same time, the erect standing branches on the backs of the backbone branches should be removed as much as possible. For the lower main branch extension head adopts the middle cut method, more short cuts the two sides of the branch, as soon as possible to increase the amount of branches, and enhance growth potential.
3. The strong and weak leaders of the Central Committee have weak branches and weak shoots. The upper branches are weak and the lower branches are strong and thick. They are bound to cause strong growth; the three main branches of the base are strong and co-exist. It is easy to cause the phenomenon of "sucking neck" in the middle of the country and affect the growth of the central leadership. Suppress the promotion, select the weak branch on the lower branch, try to eliminate the Wang branch, and open the backbone of the branch angle, ring promotion flower, inhibit the growth potential of the main branch of the lower crown, using summer pruning to promote the formation of flower buds, let The first branch has multiple results. Efforts should be made to properly remove the overlying branches of the upper main branch, and the second and third main branches and the central leadership should adopt multiple short cuts to accelerate the increase in the amount of leaves and leaves, control the amount of flowers and flowers, and increase their growth.
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