In order to allow growth of mature Hawthorn trees, the relationship between the various levels of stem branches should be adjusted during pruning so that growth and results can be balanced. According to the author's many years of experience, the specific pruning measures for this kind of hawthorn tree can be summarized as "seven sparse, five shrinking, two cuts, and one culture." 1, seven sparse one is to get rid of dry branches and pests and branches. In conjunction with pruning, the dried dead and diseased shoots are removed and burnt together. The second is the sparse branches of sparse stems. First of all, we must reserve 5-7 large branches with appropriate positions and promising development as permanent backbones. Then, the remaining positions are improper, there is no future for cultivation, and the weak branches are removed in batches, stages, and grades. When removing, avoid cutting it off once. If too much sparing is done at one time, it will affect the tree vigor because of killing, or cause too much, too much space, affecting the output of the year. To remedy this deficiency, the problem of crowding can be solved by retracting some of the middle and twigs. Third, overlapping overlapping branches and branches. When two branches overlap each other or grow side by side or crosswise, you should leave the branches with proper position, good direction, and strong growth, and remove the bad branches. If the growth of two branches is similar, one branch should be selected and the other branch should be compressed; if the two branches overlap, cross, stagger, and meet each other, one lift-one pressure can be used to adjust the angle and the space can be solved. The fourth is the trigeminal branch around the sparse crown. Should generally get rid of the middle branch. That is, "every three go to the middle and leave branches on two sides." However, if the lateral branches grow in an inappropriate position, they should also be removed. The fifth is to get rid of the competition. Extension branches on branches. If the angles of the two branches are small, and their growth potential is strong, they will often compete with each other. When pruning, leave a branch with the proper position and cut the other branch once or several times depending on the situation. Sixth, it is a deft leggy branch in the desert. After the weak tree's head is pressed, or due to the increase of the angle of the branches, the internal malleolus are likely to germinate on the branches of the leggy, which should be appropriately removed. Seven is the result of sparse birth. When pruning, the big tree in full fruit period should stay strong and weak, and go to the drooping branches to stay on both sides; for the strong fruit trees in the early result period, go to the vigorous branches to stay in the meanow branches, and go to the upright branches to leave the oblique branches; if the branches around the branches are dense The guilty emptiness should be spent on the dense branches, leaving more branches in thin places, especially the dense extruding sticks, chicken claw sticks, diseased sticks and dead stick sticks on the periphery. 2, five shrink one is retreat Jiao Jiao shoots. The backbone shoots with pinching phenomenon should be trimmed from the branches. If there are leggy branches at the bottom of the Jiaozuo branch, the leggy branches can be cultivated instead of the original branch branches. The second is to shorten the result of prolongation of the internal branch for many years. Within the crown, the result of perennial branches is slender, and the resulting parts are moved outwards, and retraction should be performed from the lower branches. If it is a weak old tree, it should be recaptured more heavily so that it can be cultivated into short, rough and robust branches. The third is to retract the back branches and internal branches on the backbone branches. This kind of branch influences the extension of the backbone branches and causes tree-like disorder. It should adopt measures of heavy retraction and transform into branches and branches. The fourth is to withdraw perennial branches. For those who have long-term apprenticeships that have a promising future, they should stay straight, stay strong, stay strong, and stay on. Perform proper retraction and cultivate into fruiting groups. The fifth is to retract the drooping branches. Should choose to have upward growth ability, strong growth of the riser branches, from the branches of the retractive trim, to raise the angle. 3, two cut ones are short extensions. For the saplings and the trees of the initial results, for the extension of the crown, the extensions of the main and lateral branches are appropriately shortened. The second is short cuts. For the annual branch of the internal concubine, it may be appropriately shortened according to the size of the space. The space may be longer, the space may be shorter, and the resulting branch may be cultivated. 4, training. The perennial hawthorn tree canopy is a focal point, a weak branch, a bald guilt, and a low yield. It is recommended that the preparation branches (branches) should be cultivated year by year to replace the original canopy, or to use the long branches in the inner larvae to cultivate the resulting branches and recover. Yield.
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