Young tree period (4 ~ 5 years ago) The young tree period of peach trees is similar to that of other fruit trees. Its main characteristics are vigorous growth, often sprouting a large number of development branches, excessive fruiting branches, long fruiting branches and a large number of secondary branches, few flower buds, high node position and low fruit setting rate. The main task of plastic pruning in this period is to enlarge the crown as soon as possible, complete the pruning task of plastic fruiting branches quickly, increase the number of various fruiting branches, and promote early fruit and high yield. Therefore, the pruning amount of young trees should be light rather than heavy. The experiment shows that the peach trees with moderate light cutting are strong and have high yield.

The cutting length of the main branch depends on the growth potential of the branch. In the young tree stage, the tree vigor gradually becomes stronger, and the cutting length should be correspondingly lengthened from short, such as the thickness of 1.5 ~ 2.5 cm, and the cutting length is about 35 ~ 70 cm. In order to adjust the balance between main branches, strong branches should be kept short and weak branches should be kept long. The length of the lateral branch should be shorter than that of the main branch, which is about 2/3 ~ 3/4 of the length of the main branch. Open the angle between the main branch and the outer bud branch and the auxiliary tip. The direction of the lateral branches is inclined outward.

It is an important link to cultivate large and medium-sized fruiting branches in the young tree stage and prevent the main branches from being exposed in the full fruit stage. There are two ways to cultivate big branches in drilling holes. One is to put it first and then cut it, that is, to put the overgrown branches longer, bend and sprain to slow down the growth, and then cut back the base branches in the next winter; The other is cutting first and then releasing, that is, pruning in winter, leaving 15 ~ 20 cm for re-cutting, controlling coring in the summer of the following year, pruning in winter to remove strong and weak, straight and oblique branches, and cultivating branches. If the lumen branch group is too large, it is easy to cause poor crown illumination, and the branch group is easy to weaken. Generally, the height should not exceed 60 cm. Medium and large branches can be cultivated on the periphery and both sides of the main lateral branches, and the strong branches are cut off by 30 ~ 40 cm, so that the new branches expand year by year and occupy space. However, attention should be paid to maintaining its subordinate relationship with the main side branches and not exceeding the growth potential of the side branches. And pay attention to keep a certain distance between branches in the same direction.

Fruiting branches should be kept for a long time or placed slowly to alleviate the branching potential. Long fruiting branches and long fruiting branches can be cut by 30 ~ 40 cm, or slowly, and then retracted when the fruits droop and the back branches grow. Short and medium fruit branches can be cut normally. Sparse and useless upright branches and too dense branches. Try to make full use of the fruit branches of the secondary branches. Increasing the yield of young trees is also an effective way to alleviate the tree potential.