What is the difference between pear trees and apples in pruning

1. Pear trees are tall, dry and slow to grow. Under the same management conditions, pear trees of the same age have smaller crown diameter, smaller stem circumference and conical crown than apple trees. But after fruiting, especially after reaching the peak fruit stage, the tree shape is more open than that of apple trees. Therefore, when shaping and pruning young pear trees, they should be lighter than apple trees; the growth potential and rising speed of the central stem should be timely and properly controlled to promote the growth power of other branches. Second, most pear varieties with high sprouting rate and low branching ability have high sprouting rate and weak branching ability, so there is less room for branch selection during shaping, and it is difficult to cultivate standard tree shape. In order to reduce the amount of pruning and make the pear tree bear fruit earlier, do not force the shape of the tree, especially the lateral branches, and wait for the angle to open naturally, and then add the lateral branches after sprouting branches at the back. Third, the pear tree has a strong apical advantage, multi-uniaxial extension, and it is difficult to cultivate large and medium-sized branches with many component branches and large opening angles. in the process of fruiting branch group culture, strong branches should not be released long, but should be truncated first, strong cutting and weak release every year; when the number of branches is reached, and then grow to release fruit, quantitative results, and leave room. Fourth, the number of main and lateral branches is more than that of apples, and the extended branches of these backbone branches should not be placed slowly or too lightly, so as to avoid the relative increase of blind nodes in the rear. With the outward extension of the backbone branches, the medium and short branches that occurred in the back in the early stage are easy to senescence and become long-term ineffective branches. finally strangled to death, forming the phenomenon of premature senescence and disconnection of branches. After causing this situation, it cannot be overcome without retrenchment. Fifth, the accessory buds at the base of pear branches are well developed and have a long life, which is the main source of dormant buds, so pear trees have stronger ability of branch regeneration than apple trees after regeneration. Therefore, after entering the full fruit stage, when the backbone branch growth is weak, the fruit position is seriously moved out or the old tree is renewed, this characteristic can be used to renew and rejuvenate in order to prolong the fruiting life.