After harvesting the sparse sweet cherries, the dense branches, weak branches and diseased branches should be removed or shortened to open the light path, enrich the branches and reduce unnecessary consumption, which is conducive to the differentiation and enrichment of flower buds and branches mature. Mainly aiming at the top strong tree and the closed tree, it should be carried out from top to bottom. When sparse branches of trees with too much upper branches are not allowed to be in one step, it should be carried out in two steps, each with 1 to 2 large branches at intervals of 1 month; the thin branches and invalid branches behind the inner chamber should be thinned at one time In addition, the dense tips on the back should be removed at one time.
Twisting Twisting is to twist the vigorous long branches and competing branches by 180 degrees during semi-lignification, weaken their growth, promote flower bud differentiation, and transform into fruiting branch groups. Those who are still growing vigorously after twisting should be continuously lightly topped to inhibit growth. Light topping on the extended tip can ease the tree vigor, but the secondary tip that occurs after topping should be uniaxially extended.
Topping Topping is the removal of the young part of the apex before the new shoots have not become lignified, which is called topping. It is one of the most used methods for pruning sweet cherries in summer. Topping young trees can encourage more branches to germinate and promote the formation of flower buds. It can play a role in saving nutrients, improving fruit setting rate and fruit quality when topping the trees in the early fruiting and full fruiting periods.
Lazhi pulls Qiangwangzhi to the place where there is space to make up for the shortage of backbone branches. It can accelerate the formation, delay the growth of the shoots, improve the light in the bore, and promote the differentiation of flower buds. In the vertical direction, the main branches should be kept at 80-90 degrees; overlapping branches can be pulled horizontally to the appropriate direction; the vertical distance of the main branches in the same direction should reach 80-100 cm.
Timely control to control the growth of the Wangshu tree after taking various summer shearing measures, it should be sprayed with 200-300 times paclobutrazol or 180-200 times PBO in a timely manner to control it. Wangshu sprayed 2 to 3 times to get a good suppression effect.
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