1, tree structure. Trunk-shaped, also known as cylindrical, is suitable for high-density cultivation, the row spacing is about 3 meters, the plant spacing is 1.5 ~ 2 meters, and the yield per mu is11~148 or more, which is suitable for short-branch varieties. At present, some of them use dwarf rootstock-short branch variety combination, and the density reaches more than 200 plants. The trunk tree has simple structure, relatively easy pruning management, ventilation and light transmission, early fruiting, stable yield and high quality. In this tree form, the whole tree has only one main branch, and 30 to 50 branches of various types are evenly planted on the main branch. The length of branches depends on the planting density, generally between 15 ~ 120cm, and the number of branches is mostly 30 ~ 40 cm. Crown diameter1~ 2m, and the lower branch is longer than the upper branch. The opening angle of branches is 90 ~ 120 degrees, and the upper and lower branches on the whole tree are full but not dense, with full buds. If properly managed, there will be almost no new buds growing. Because of the good light, the red fruit rate is higher.
2, plastic surgery. (1) Fixed stem: If it is a strong seedling, it will not dry up in the first year. Cut the buds at intervals from 40 cm above the ground to below 3 ~ 4 buds at the top, or treat it with "Chuzhibao No.2". In this way, due to the large number of branches and scattered nutrition, there are few branches and leaves. If the seedlings are weak, they can be dried at 90 ~ 100 cm. ⑵ Summer management: A. Pick your heart. In mid-May, when the lateral branches are longer than 15cm, for the robust ones, the tender shoots of 1cm are removed, and at the same time, the top 2-4 tender leaves are removed, leaving petioles. B, changing the joint, that is, when the branch is semi-lignified, holding the same joint of the branch with both hands and twisting it horizontally for 90- 180 degrees; For long branches, it can be turned once every 3 ~ 4 knots. C, taking branches, in autumn, taking branches from upright and lush branches, so that the branches are slightly drooping and strong, the branches are mature and the buds are full.
3. Winter scissors. If you don't carve buds (tips), pick the core and take branches, only flatten the new shoots. In the current year, all the lateral branches should be drained in winter, and the branches with elongated trunk should be cut short at the full bud to strengthen the strength of the middle trunk and increase the ratio of branch thickness to trunk thickness.