The first step of vine head pruning is to cultivate an upright and stout trunk, so a very strong trunk branch must be cultivated in the year of planting. In order to achieve this goal, we can choose the best new shoots from the new shoots dried in the sun that year and straighten them with a stick, and remove all the others. When the new shoots reach more than 1 m, the core can be cored according to the target tree height. For the secondary branches after coring, except the top, only one leaf is left for coring to promote the robust development of new branches. When cutting in winter after defoliation in autumn, leave 4 ~ 6 more buds above the dry height required by the target tree for short cutting. The dry height shall be controlled at 0.8 ~ 1.2m according to specific conditions.

In the second year, straighten the trunk as soon as possible with a stick, and leave 5 ~ 6 strong new shoots on the upper part of the trunk, and cultivate according to the basic axis of the branch group. Later, the fruiting vines were planted on the backbone shaft, and the remaining lower part was completely smoothed. When pruning in winter, if the target tree is a cup-shaped column frame, all branches and vines will be cut short by short branch pruning method, leaving only 2 ~ 3 buds, so that branches can bear fruit in the base next year. If the target tree is in the form of a fence with spreading arms, select new shoots along the row direction on both sides of the upper part of the plant, cut off 8 ~ 12 buds, cultivate long-branched female vines, and tie them horizontally on the fence wire. Then, select a strong vine at the lower part of each side and cut 2-3 buds as a prepared vine culture.

In the third year, the cup-shaped column frame was trimmed according to the previous year. In the form of cantilever fence, the long-branched mother vine bearing fruit on the upper part is cut off, and the two new vines with short-branched preparation vines bearing fruit on the lower part are still cut off according to the method of one long vine and one short vine in the previous year, and the bearing mother vine and the preparation vine are cultivated respectively in the next year. The cutting method will be basically the same every year. No matter what frame and pruning form are adopted, the height of the mother vine from the ground should be kept at 1 ~ 1.5 meters.