1, sapling period. During this period, the growth of the tree was strong, the growth of new shoots was large, the number of secondary branches was increased, and the canopy expanded rapidly. Pruning should be done with both plastic and results. Two-thirds of the total branch length of the main branch extension branch was generally cut off, and 1 to 2 secondary branches under the clipping were removed. The developmental branches with a moderate growth and open angle should be put slowly. Branches that are too long or have light legs at the back should be moderately retracted, increasing the number of resulting branches and cultivating the resulting branches. The young trees that grow weaker should be appropriately short-cut, thinning weak and weak branches, keeping more robust branches, and flattening the upright branches as cultivating branches to promote strong and robust branches.
2, the result period. This period of the canopy has basically taken shape. Expanding the crown is no longer the main task. The focus of pruning is to maintain a good tree structure, maintain the growth potential of the tree, regulate the relationship between growth and results, and extend the results of years. During winter cutting, according to the growth of branches and the space of various parts of the canopy, appropriate density and weakness can be used to maintain a stable result position and growth potential. For the extension branches at all levels, one third to two thirds of the original year's shoots are generally cut off, and 1 to 2 secondary branches under the cut are removed. Closed planting gardens that have been closed, cutting off the extension branches will no longer eliminate the secondary branches under the cuttings to control the size of the crown. For the debilitating main, lateral branches, perennial branches, branches, and branches, retract and renew or raise the angle in the areas with strong branches to restore the growth potential. The upper part of the crown should pay attention to the early falling head and happy. Open the "skylight" and retract or remove the dense and strong branches on the upper and outer parts of the crown to improve the lighting in the crown. The debilitated stocks that have the ability to lose results in various parts should be eliminated or retracted as soon as possible.
3, aging period. During this period, the tree crown gradually shrank, the growth became weaker, and a large number of dead branches appeared in the crown, resulting in an outward shift of the parts and a decrease in the yield. The pruning task is to update the backbone branches and result branches, enhance the tree vigor, and promote its “returning to old ageâ€. To make use of small, well-developed branches in the lower middle, or to retract in more upright branches, prompt the buds to germinate and renew. Using proper appetite branches, cultivated as the backbone and the resultant branch. For the result sticks and the result sticks, we must follow the principle of “weaken and stay strong,†and choose to stay strong and vigorous. For the hard-to-renew extremely frail tree, on the basis of strengthening the management of soil and fertilizer water, a one-time tree-wide updating of the main lateral branch and large branch group in the 10 to 15 year old part of the tree can be performed. A large number of new shoots can be sprouted in the year, and the buds and heart tips can be taken. Winter cutting and other measures, the second year can be a certain amount of production.
2, the result period. This period of the canopy has basically taken shape. Expanding the crown is no longer the main task. The focus of pruning is to maintain a good tree structure, maintain the growth potential of the tree, regulate the relationship between growth and results, and extend the results of years. During winter cutting, according to the growth of branches and the space of various parts of the canopy, appropriate density and weakness can be used to maintain a stable result position and growth potential. For the extension branches at all levels, one third to two thirds of the original year's shoots are generally cut off, and 1 to 2 secondary branches under the cut are removed. Closed planting gardens that have been closed, cutting off the extension branches will no longer eliminate the secondary branches under the cuttings to control the size of the crown. For the debilitating main, lateral branches, perennial branches, branches, and branches, retract and renew or raise the angle in the areas with strong branches to restore the growth potential. The upper part of the crown should pay attention to the early falling head and happy. Open the "skylight" and retract or remove the dense and strong branches on the upper and outer parts of the crown to improve the lighting in the crown. The debilitated stocks that have the ability to lose results in various parts should be eliminated or retracted as soon as possible.
3, aging period. During this period, the tree crown gradually shrank, the growth became weaker, and a large number of dead branches appeared in the crown, resulting in an outward shift of the parts and a decrease in the yield. The pruning task is to update the backbone branches and result branches, enhance the tree vigor, and promote its “returning to old ageâ€. To make use of small, well-developed branches in the lower middle, or to retract in more upright branches, prompt the buds to germinate and renew. Using proper appetite branches, cultivated as the backbone and the resultant branch. For the result sticks and the result sticks, we must follow the principle of “weaken and stay strong,†and choose to stay strong and vigorous. For the hard-to-renew extremely frail tree, on the basis of strengthening the management of soil and fertilizer water, a one-time tree-wide updating of the main lateral branch and large branch group in the 10 to 15 year old part of the tree can be performed. A large number of new shoots can be sprouted in the year, and the buds and heart tips can be taken. Winter cutting and other measures, the second year can be a certain amount of production.
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