How to prune big cherries in summer?

How to prune large cherries in summer? Please give guidance on summer cherry pruning can refer to the following methods: 1. Take the heart. Before the branches lignify, remove the tip part of the new shoots for pinching. The main function of topping is to control the flourishing length of branches, increase the branching order and the amount of short fruit branches, accelerate the expansion of crown, promote the transformation of branches to fruiting branches, and facilitate the early fruiting of young trees. This measure is mainly used for young trees and flourishing trees. For trees in full fruiting period, the annual growth of new shoots is less than 20 cm. The first time is usually carried out within 10 days after flowering, about 5 cm of the front end of the new shoot is removed, so that except for a vigorous branch at the top, the lower 1 - 2 buds can form short branches, which is good for controlling the crown and cultivating small fruiting branches. The second topping is generally carried out from late May to mid-July. The new shoots are reserved for 30- 40cm topping, which is mainly used to increase the number of branches. If the tree vigor is vigorous, the secondary shoots can be continuously topped for 2-3 times after topping, so as to promote the capping of secondary shoots in late August to form short branches and early fruiting. Too late picking sprouted branches are not full. Second, twist and take branches. When the new shoots are semi-lignified, hold the middle and lower parts of the new shoots and twist them 180 degrees to make the new shoots droop horizontally, hurt the wood and cortex but not break them. May to June twistings are beneficial to flower bud formation and inhibit shoot growth. Twisting the dorsal and inward branches can weaken the growth potential and increase the number of branchlets effectively. In the hot season, the operation method of gradually stroking the flourishing shoots from the base to the top by hand is called taking branches, which can be carried out from May to August. Taking branches is beneficial to the opening of branch base angle, and has a good effect of slowing down potential and promoting flowers. Third, pull branches. Branch pulling is a technical measure adopted to adjust the angle of main branches or auxiliary branches, ease tree vigor and promote early fruiting. Generally, straw rope, plastic rope and other things are used, the end is tied with a wooden stake buried underground, the upper end is tied with a wooden hook or padded with waste cloth, waste rubber and other things to prevent damage to the skin of the pulled branch, and the pulled branch is opened at an angle of 70-80 degrees for the first branch, 80-90 degrees for the second branch, 90 degrees for the third branch, and 90 degrees for all auxiliary branches and lateral branches; The branch pulling time shall be carried out before flowering in spring and after harvesting in June. During branch pulling, large branches shall be prevented from splitting. At the same time, it shall be prevented that the middle part of the branch pulled upward forms bow back due to the high support point of branch pulling, resulting in small waist angle and bow back of branches. The pulling rope for branch pulling shall be buried in the tree tray to avoid affecting the operation between rows. IV. Thinning and retraction. After cherry harvest, in order to adjust the tree structure and improve the ventilation condition in the crown, proper thinning and retraction pruning should be carried out. For the strong and vigorous branches that seriously affect the ventilation and light transmission in the crown and have no reserve value under the conditions, they can be reduced at the branches, the lower branches can be reduced, and the higher branches can be thinned to ensure that the number of branches is not reduced and the light is increased, so as to achieve the effect of increasing the yield of strong trees. Do not put the retraction of big branches and the contraction of fruiting branches in winter, resulting in the drying of branches under the saw after spring. Click for more cherry tree planting techniques Click for more fruit planting techniques