Persimmon trees should be cut in winter during the full fruit period.

First, adjust the angle of the backbone branches, balance the tree potential with the gradual increase of branches, the inner chamber light becomes worse year by year, plus the growth potential moves outward, the branches droop, the inner chamber branchlets grow weak, and the result decreases. Pruning in this period should adjust the angle of backbone branches, balance internal and external growth forces, and remove too many large branches year by year, so as to promote the growth of inner-bore branchlets, blossom and bear fruit. The original head of the big branch is retracted year by year, while the rear regeneration branch is supported to grow outward and upward, gradually replacing the original head, so as to raise the angle of the main branch and restore the growth potential of the main branch. Second, with the combination of thinning and contraction, the rear part of persimmon tree in the inner bore branch group was gradually bald during the peak fruit period, and the fruit part moved out, which should be retracted during pruning to promote the regeneration of the posterior branch, but most of these regenerated branches were dense and should be weak and strong. Persimmon trees bear much fruit on strong branches and bear large fruits. Therefore, the inner bore branch group should be retracted, pay attention to cultivation, the old branch group which is too high and too long should be retracted in time, the lower branch should be renewed, and the short and thin branch group should be retracted first to increase the number of branches and promote their rejuvenation. Third, multi-cut reserve branches, the growth of fruiting branches is generally weak after overcoming the fruiting branches in large and small years, and most of them can not form continuous fruiting in the same year of fruiting. According to many years' working experience, the fruiting branch or the fruiting mother branch of 1x3 should be truncated as a reserve branch every year, so that it can bear fruit every other year, and the effect is good. The fourth is to renew the persimmon tree in time, keep the tree potential unchanged, the regeneration branch of persimmon tree is earlier and the life span of the branchlet is shorter than that of the general fruit tree, and it weakens or dies after 2 to 5 years, but because the hidden bud has a long life and strong germinating power, it can be renewed many times, which can keep the tree potential enduring and prolong the full fruit period.