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How to prune pear trees in young fruit period?
Pruning of young pear trees is mainly based on the requirements of tree shape, selecting and cultivating backbone branches at all levels, quickly expanding crowns, opening angles and cultivating fruiting branches, so as to lay a good foundation for early fruiting. The key points to be grasped in this period are: the pruning amount should be light, the branches should be less sparse and more thrown; Use more auxiliary branches; Because the main branch has low branching ability and low selectivity, it needs to follow the branch; Pay attention to the angle of opening the main branch. The method is as follows: when shortening the extension branch of the main side branch, leave the side bud, pull the branch, support the branch, take the branch, drop the branch, and open the angle with a W-shaped device; At the same time, we should properly control the intensity. Prune in the first year after the stem is fixed, and the branches selected as the main branches should be moderately cut short when the length is more than 30 cm, and do not cut short when the length is less than 30 cm; Then the branch selected as the extension branch of the middle trunk is appropriately shortened. Most pear varieties have few branches, so the selection and retention of backbone branches should be flexible. In principle, the first floor can choose three or four main branches, and the main branches can be adjacent or adjacent. According to the branching situation, try to keep other branches in order to bear early fruits as auxiliary branches. The arrangement of the upper branches of the main branches should master the principle of staying when you have time. The cutting length of main branch and lateral branch extension branches is generally 50 ~ 60 cm, and the middle and lower parts of summer shoots should be cut short, and the difference should not be too big. The pear can be shorter to prevent the skeleton from being too soft.