After the chestnut fruit tree enters the fruiting period, the task of pruning is to promote the formation of strong mother trees, maintain the appropriate number of mother branches, and control the outward displacement of the resulting parts to achieve three-dimensional results, achieving high and stable yields and improving quality. Pruning takes more of a combination of "concentration" and "dispersion." The so-called "concentration" is to eliminate dense branches, drooping branches, branches and branches of diseases and slender branches, and to withdraw perennial supplementary branches, so that the tree nutrients are concentrated in the result area, and the branches are promoted from weak to strong; so-called "dispersion", It is to maintain adequate and less sparseness on Zong Shi Zhuang, so as to disperse the nutrients, ease the tree potential, and achieve the results. In the specific pruning, “concentration†was performed on the twigs of weak trees, and “spreading†was applied to the strong branches of Wangshu. First, sparsely cut short mother branches. Robust annual branches of the canopy grow mostly as excellent mother trees. The strong result is that there are usually 4-6 full shoots at the top of the mother shoots, all of which can produce better results. For this type of results, the mother branches should be lightly cut, that is, each of the two-year branches can leave 2-3 mother branches, and the others can be removed. The 20-centimeter-long medicated result usually has 3-4 full-filled buds. After the branches are pumped, their growth is weakened and new mother-trees are not easily formed. Except for the sparse overlapping of the mother branches in this type of results, they should also be shortened so that new mother stems can be drawn. Through a series of methods of retention, sparse shearing and short cutting, the number of mother trees per square meter of projected tree crown strength leaves 12 trees; Golden Tree leaves 8-10; weak trees leave 7-9. Second, renew and update the auxiliary support. In the canopy, axillary buds grow for many years. If they are not retracted and renewed in time, the apex growth will weaken, and the base will have light legs. As a result, the ability will decline. When pruning, it can be retracted to a good branch; if there is no branch at the base, a short pile of 3-5 cm long will be sawed out, forcing the dormant buds of the base to germinate and grow to new shoots. Third, control the use of leggy branches. In the gap between the crowns, choose oblique leg buds, take the summer tossing, and take a short winter (25-30 cm) to promote the branches, and then retract them to the branches to change the branches. From the angle, it grows horizontally and gradually grows into fruiting branches. Fourth, deal with the removal of thin branches. The thin and weak branches of the chestnut tree, one of which is a male flower branch, consume a lot of nutrients by opening a large number of male flowers; the other is a weak development branch, which grows some leaves after germination. During pruning, except for the indwelling, some weak branches were kept as reserved branches, and other thin and weak branches as well as cross branches, drooping branches, and diseased and broken branches were all repaired.
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