Thinning is to cut off unnecessary branches from the base, mainly to cut off dense branches, clustered branches, forked branches, aging branches and moth-eaten branches. The purpose is to make the branches evenly distributed, improve ventilation and light transmission conditions, adjust the relationship between health and reproductive growth, concentrate nutrients on the reserved branches, and promote flowering and fruiting. Sparse should be obliquely cut from the upper part of the branch point, leaving no residual piles, and the incision should be smooth.

(2) Shortcuts

Short cut refers to cutting off part of annual branches, also known as short cut. This thinning can be divided into light cutting (light short cutting) or heavy cutting (heavy short cutting) according to different cutting techniques. Most pruning in growth period is light pruning, that is, cutting off less than half of the length of the whole branch. The purpose is to promote the production of a large number of short and medium branches by pruning, so that they can be fully lignified before winter and form full axillary buds or flower buds. Flowers and plants

When plants are pruned during dormancy, they are mostly pruned again, that is, the length of the whole branch is pruned by more than half. In some flowers and trees with strong germination, most branches are sometimes pruned, and only 2 ~ 3 lateral buds at the base are reserved to promote germination and strong branches, which is beneficial to flowering. This method is often used to prune roses, crape myrtle and other flowers and trees. In a short time, it should be noted that the incision should be inclined at 45 degrees, which is opposite to the direction of the bud, and the incision is about 1 cm away from the bud. The direction of bud retention should be determined according to the growth direction of branches. Generally, the buds of flowers and trees should be left outside the branches, so that the branches can grow outward and make the plants plump in the future.

(3) picking hearts and leaves

Picking refers to removing the terminal buds on the main branches or side branches of plants. Tapping can inhibit the growth of main branches, promote multi-lateral branches, make plants dwarf, stout and plump, increase the number and position of flowers, and also delay flowering or promote their re-flowering.

Leaf picking refers to cutting off some leaves properly in the process of plant growth, with the purpose of promoting metabolism, promoting bud germination, reducing water transpiration and making plants neat and beautiful. For example, evergreen flowers and trees and transplanted flowers in the growing season need to remove a small amount of leaves to facilitate survival.