Principles: adapt measures to local conditions, prune trees accordingly, promote and restrain them appropriately, provide ventilation and light transmission, and produce three-dimensional results. Plastic surgery: (natural open heart shape). The stem height is 20-40cm. The main branches (3-4 branches) are scattered and scattered on the main trunk. The branch angle of the main stem is 30°-50°. There are 2-3 sub-main branches on each main branch. Generally, after the third main branch is formed, the central trunk of the branch is cut off and twisted to one side to form a fruiting branch group. Pruning: Mainly light pruning for young trees. After selecting the extended branches in the center of the cluster and the extended branches of each main branch and sub-main branch, cut them moderately or even severely, and adjust the growth balance between the main branches based on the degree of shortcut and the direction of the cut buds. In addition to appropriate thinning and deletion of overly dense branch groups, the inner branches and weak branch tips in the middle and lower parts of the crown should generally be retained. Early fruiting period: Continue to choose short cuts to extend the backbone branches at all levels to eliminate summer shoots and promote strong autumn shoots. In autumn, flower-promoting measures such as girdling, root cutting, and water control are adopted for vigorous trees.

During the fruiting period: timely retract the fruiting branch group, the flower-falling fruiting branch group and the declining branch group, and prune off light-blocking branches, dead branches, diseased and insect-infested branches.