1. Shrubby plastic surgery has no trunk, and the planted seedlings should be fixed at a distance of 15-20 cm from the ground to promote the germination of lateral branches. Generally, 3-4 main branches are left at the upper part of the ground 15 cm, and 2-3 lateral branches are left for each main branch to form a shrub. Only dead branches are cut in the first two years, and overlapping branches, over-dense branches, short slender branches and uniaxial elongated branches are cut in the fifth to fourth years, and the height of the tree is controlled within 2-3 meters.
2. The height of the trunk is 60-80 cm, and the barren land can be shaped according to natural happiness, that is, 3-4 main branches are left at 70 cm, and 2-3 lateral branches are left for each main branch. Slopes with good soil but no irrigation conditions can be shaped in two layers according to the trunk. In the second year, one of the main branches in the first layer can be cut off by 70 cm to promote the development of the main branches in the second layer, and at the same time, the side branches in the first layer can be lightly cut. In the third year, the lateral branches of the second layer main branches and the first layer main branches are light and short, and the extended branches of the main branches are slowly put in or re-cut to inhibit their growth. The fertile soil, irrigation and drainage conditions and plots can be shaped according to the three-layer dry shape, that is, on the basis of the two-layer dry shape, the central extension branch will be shortened by 50 cm in the fourth year to promote the development of the third-layer 1-2 main branch, and the second-layer lateral branch will be slightly shortened, and the central extension branch will be cut off and capped in the fifth year.
Second, when pruning mature trees in winter, it is mainly to remove long branches, drooping branches, tertiary branches, dead branches, weak branches, over-dense branches in the cavity and weak branches in the periphery. Slowly release or lightly cut the annual branches around to stabilize the crown. Summer pruning is mainly to remove the dense branches and leave the newer long branches to pick up the core.
Third, the life span of old trees pruned with seabuckthorn is short. Generally, small regeneration should be considered after three years of fruiting, that is, when it is 7 years old, the old fruiting branches should be properly retracted, and the clustered branches at the lower part of the fruiting branches should be slowly released or re-cut to make them fruiting branches; When/kloc-0 was born at the age of 0, it should be a big update. One piece of tufted plastic can be cut from 60 cm and the rest from the bottom. The main branches are selected from the new branches issued in the same year, forming a trunk-like COVID-19. Trunk-shaped spring can be sawed off from the root neck, and it can be pruned in clusters after promoting branches, and it can bear fruit in the next jade year.