Young pruning: dry immediately after planting, leave 15~20 cm plastic tape on the top in spring, and erase all other lower buds; Pruning in dormant period: select the middle branch with upright top and the extension branch of the main branch, shorten and expand the crown, and cut off the long branches drawn from the upper part of the crown and the main branch; Prune in summer, uproot roots and tillers, and pick new shoots with space for many times to increase the amount of branches.

Pruning at maturity: the principle and purpose are to adjust the relationship between growth and fruiting, balance the tree potential, control the crown and top advantages, update the fruiting branches, control the height to fill the gap, distinguish the primary and secondary, and rationally match.

Dormancy pruning: dormancy can be carried out, usually from February to March; The pruning sequence is as follows: erasing the rhizome, pruning the crown, pruning the top of the crown, pruning the middle branch, pruning the lower branch, pruning the lower branch, pruning the weak branch and pruning the lower crown. The principle of pruning is not to cut the cross section smoothly, remove the old branches and leave the new branches, remove the dense parts, leave the fried dough sticks (long branches) in the sparse parts for pruning, cut the adjacent branches short in the empty parts, and fill the gaps with the fried dough sticks (long branches).

Pruning technology: 1/3 means cutting, cutting and leaving. Cut off the useless branches of the roots, stems, cavities and crowns, the branches with excessive density in the fruiting branches, and the fruiting branches in the crown for more than 3 years. The middle branches and strong fruit branches in the middle and upper part of the short-cut crown are staggered, the upper middle branches are cut off at 1/2, the strong fruit branches are cut off by 2/3, and the crown and transverse branches in the bore are cut off, which does not affect the growth of other branches. Select 1 ~ 2-year-old fruiting branches with vigorous canopy growth and uniform distribution to improve the yield of old eye branches.

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Pruning in summer: Pruning in summer is the key technology to obtain high yield and continuous fruit of Lycium barbarum. Repeated topping can promote bud germination, effectively increase branching groups, form new fruiting groups and maintain normal flowering and fruiting. Using the methods of wiping, cutting and cutting, even if the roots of plants are wiped flat, the buds on the back of the mouth are cut off, and the trunk and dense buds stand upright in the cavity. Cut short the middle branch and some branches on the back of the upper crown, cut off 20 cm, and cut off the long branches that stand upright on the back.