(2) Varieties with weak branching ability are not easy to select three main branches a year. Therefore, the extension branches of the central trunk should be shortened to make the second and third buds under the incision conform to the direction of the required main branch, or the strong branches should be promoted by carving. Because the cutting is heavy and short, the branches that will be the main branches in the second year are often not strong enough, so long stocking branches are needed. Pay attention to control the growth potential of the central trunk and the main branches retained in the previous year, and eliminate the excessive differences between the main branches year by year according to the strength.
(3) From the first year of plastic surgery, it is necessary to deal with the relationship between the central trunk and the main branches. That is, the first branch is stronger than the second branch and the second branch is stronger than the third branch. Every year, the branches are shortened and extended, and the length is basically the same; The interception height should be weak, strong and low; Leave more weak branches and less strong branches; The vertical angle of weak branches should be small, and more branches should be left; Strong branches should be cut short and spread at a vertical angle.
(4) Leave more auxiliary branches, one is to support the tree, and the other is to blossom and bear fruit early. In order to control the growth of auxiliary branches, measures such as taking branches, reversing branches, bending branches and ring engraving should be taken to promote the formation of flower buds.