After planting, the trunk height will increase with the increase of density. The height of trunk is required to be 60 ~ 100 cm, and there are 5 ~ 7 full buds in the plastic belt about 20 cm below the cut. When pruning in winter, according to the planting density and branch growth potential, 3 ~ 5 annual branches with good orientation, good vertical angle (50 ~ 60) and normal growth are selected as backbone branches; The cutting length of main branches is 30 ~ 40 cm. The rest of the branches, tall and vigorous, scattered; The anticline, the lower branches on the back or other golden mean branches are thrown to promote flowers, and the density is sparse.
When pruning in the next winter, the growth potential of each plant should be balanced first. For the main branches with weak growth potential, the cutting length should be appropriately extended to 50 ~ 60 cm or slowly released; The cutting length of the main branch with strong growth potential can be shorter. Generally, the cutting length of main branch is about 40 cm, and the cutting length of lateral branch is slightly shorter than that of main branch. The branches that are too thick in the main branches and lateral branches are loosened, so that the annual branches behind the main branches and lateral branches of the anticline and the branches on the lateral branches are slowly released, so that they can blossom and bear fruit in the next year. For the annual branches with opposite lateral branches, select short branches with relatively open angle of1~ 2 to cultivate fruiting branches.