1. Bud stripping: In early spring, at the initial stage of branch germination, the redundant and useless buds on the branches are stripped by hand, which is called "bud stripping". When peeling buds, pay attention to protect the useful buds (for future use as main branches), and keep the buds in a reasonable direction and evenly distributed.

2. Tillering: When the new branches are not lignified, the useless twigs sprouted on the trunk or roots are removed, which is called "tillering". Tillering should prevent tearing bark or leaving dead piles.

3, short cutting and coring: cutting off a part of the branch, called "short cutting." In the growing season, removing the tips of branches is called "pinching". The short section of perennial branches is called "retraction". There are three kinds of short cut: light short cut, which is cut off at the full bud of the middle and upper branches to promote the growth of medium and long branches and enhance the ability to form branches; Heavy and short cutting, cutting in the middle and lower parts of branches, will reduce the number of branches after cutting, but it can promote the vigorous branches.

4. Thinning: Cutting off useless branches is called "thinning". Thinning branches can make the trees ventilated and transparent, which can promote the local area; Weakening branches can concentrate nutrients and enhance tree potential. When thinning branches for deciduous trees, the incision should be flush with the growing branches, leaving no dead branches. For sparse shrubs, it is necessary to cut off the land. When thinning large branches of evergreen trees, a small stake of 1-2 cm should be left, not flush with the growing branches.