Because there are many shapes of grape trellis, the technical points of pruning are different. For a tree with a trunk, we should first select and cultivate a stout trunk, and make clear the subordinate relationship between the main vine and the lateral vine, that is, the thickness and growth of the trunk are stronger than that of the main vine, and the main vine is stronger than that of the lateral vine. , and the extension branches of the main and lateral vines at all levels should be staggered and kept at a certain distance to avoid crowding each other; Maintain the straight growth of the main vine and extend the growth advantage of the tip. From the beginning of seedling raising, the branches and vines should be bound vertically or horizontally according to the predetermined shaping method, so that the branches and vines can grow straight and not droop and bend, and the secondary branches at the bending parts can be avoided, which will affect the top advantage of the extended branches and disturb the tree shape. In the same part of the main vine, you can't shoot more than one branch at the same time. If multiple lateral vines are planted in the same part of the main vine at the same time, the competition between the main vine and the lateral vines will weaken the growth of the main vine. When this phenomenon is found, the redundant vines should be removed in time; When pruning with multiple main vines, it is necessary to keep the growth balance of main vines and side vines, otherwise the stronger the stronger, the weaker the weak, which will easily lead to uneven distribution of main vines and side vines on the frame surface, which will not be fully utilized and affect the yield and benefit. When using free fan-shaped pruning with multiple main vines, it is often easy to see that the main vines on both sides grow vigorously and the main vines in the middle grow weakly, resulting in a large space in the lower part and insufficient utilization of the shelf surface. Therefore, attention should be paid to maintaining balance when pruning, so that the growth of the main vine in the middle is slightly stronger than that on both sides. No matter what kind of frame is adopted, the cutting length of the long tip of the main exhibition should not be too long to prevent baldness on the back; The fruit-bearing parts should be relatively stable, and the distance between the fruit-bearing parts on the main vine should not be too close, and it should be kept at about 20 ~ 25 cm to avoid weak growth of new shoots and poor fruit coloring. No matter what algebraic expression method is adopted, we should be careful not to move the result out too fast. In addition to keeping 1 ~ 2 buds chopped every year, we should also pay attention to selecting the buds that germinate at the base and leaving fewer buds that germinate at the top every spring. When the long and short branches are pruned alternately, when the fruiting branches extracted from the long branches bear fruit, they can be drained from the base in autumn pruning, and the new vines extracted from the short branches are reserved as the fruiting mother vines in the next year. When the fan-shaped pruning with hedge frame is adopted, when the elongation height of the upper extension branch exceeds the high price, pruning should be carried out on the perennial branches below the perennial bearing vine. This pruning method can not only delay the outward movement of the result part, but also play a role in local updating. If the bald part of the main vine is too long, it can be cut off from the base and replaced with a new branch in a suitable position.