1. Thinning: A pruning method to cut off annual or perennial branches from the base that affect the growth and light of trees. It mainly prunes dead branches, pests and diseases, overlapping branches, over-dense shade branches, long branches, weak branches with bare crowns, etc. For varieties with strong germination and growth potential, thinning is the main method, supplemented by short cutting, adjusting grade membership, improving ventilation and light transmission conditions, inhibiting growth and promoting development.

2, short cut: cut off a part of one-time growth branches, inhibit the growth advantage of terminal buds, promote branches, increase the formation of short branches, and dwarf the crown, form early and bloom early. For varieties with weak branching ability and strong vertical growth, short pruning is the main method, supplemented by thinning.

3. Retraction: For the aged and hollow plants, the perennial branches around the crown are shortened and pruned from a certain position to improve the light, increase the green branches in the cavity, and make the tree compact, restore vigorous growth and bloom luxuriantly.

4. Core-picking: it is one of the forms of short pruning, that is, when the tender branches grow to a certain length, the terminal buds are picked to inhibit the prolonged growth, promote the growth of strong seedlings, increase the early maturity of branches, reduce the ineffective consumption of nutrients, accumulate nutrients, and form a compact crown with many branches and short strength.

5. Twisting the tip around the root: Before lignification, twist the branch about 5cm above the bifurcation to make it droop (unbreakable); For overgrown branches, bend the top down and tie it into a circle. This inhibited the downward transport of organic nutrients, promoted the differentiation of top flower buds and increased the flowering amount. After withering, cut it from the sprain or below the base of the ring branch.