The wounds of cherry trees are often difficult to heal after the branches are removed in winter, which leads to bleeding gums, especially sweet cherry trees. Therefore, after the fruit is harvested, when the nutrient content of trees is high, it can be removed, so the wound heals quickly and there will be no gingival bleeding. But at this time, pulling out the big branches will weaken the growth, so we should first strengthen the management of fertilizer and water for the weak trees, and then pull them out by stages when the trees are vigorous, or strengthen the management in the same year when pulling out the big branches. Or leave short piles when sawing big branches in early spring, and then remove the residual piles after germination. For larger wounds, scrape them flat with a knife, disinfect them with 2% copper sulfate solution, and then apply protective agent to prevent the wounds from cracking or rotting. It is not advisable to thin branches too hard at a time, so as not to cause too many wounds. When you take back the big branches, you'd better saw them off to facilitate wound healing. As little as possible, the pruning time in winter is as late as possible, and it is best to be near the germination stage. Pruning too early, the wound is easy to lose water and dry up.

(2) Improve the lighting conditions in the canopy.

Cherry likes light and has strong polarity. When pruning, if there are too many short peripheral branches, the number of peripheral branches will be too much, and the branches will be flourishing, and the upper branches will be strong and the lower branches will be weak. After entering the fruiting stage, we should pay attention to adjusting the amount of peripheral branches, improving the illumination conditions in the crown cavity and improving the quality of branches in the crown cavity.

(3) Update in time.

The economic life of cherry trees is short, so it is necessary to strengthen the management of fertilizer and water, make use of the characteristics that latent buds are easy to germinate, and restore the tree vigor through regeneration of big branches. If the mother branches of short fruit branches and bouqueted fruit branches are extended continuously, the lower short fruit branches will often die of aging due to the dispersion and main inflow of nutrients to the top. Therefore, perennial redundant branches and old fruit branches can be retracted and updated every 2-3 years, which can not only promote the appearance of new branches at the base, but also achieve the purpose of rejuvenation and prevent the fruiting parts from moving out, which is especially important for varieties with medium and long fruit branches.

(4) Pay attention to the position of cutting buds.

The flower buds of cherry are lateral pure flower buds, and the terminal buds are leaf buds. After flowering and fruiting, the flower buds form blind nodes and no longer germinate. When pruning the fruiting branches, the cutting buds should not stay on the flower buds, but on 2 ~ 3 leaf buds above the flower buds.

(5) Protecting the terminal buds of the bouquetlike fruiting branches.

After bearing fruit every year, the bouquetlike fruit branches can continue to form flower buds between the axils of the top leaf cluster and bear fruit continuously. Under the condition of sufficient water and light, their life span can reach 7 ~ 10 years, and some varieties can even reach 20 years, so they are the main fruiting parts of cherry trees. However, except the terminal bud is a leaf bud, the rest are flower buds. Once the terminal bud is damaged, the whole branch will die, so we should pay attention to protect it from damage.

(6) attention should be paid to variety characteristics

Different varieties have different pruning characteristics. For example, the types represented by Na Weng include Na Weng, Chicken Heart and Red Light. In the process of plastic surgery, we should carefully thin the branches and pay attention to methods such as "pushing the buds in and pulling them out". Therefore, the group culture of branches should be compact, and attention should be paid to using competitive branches; For the types represented by big purple, including small purple and early purple. , we should pay attention to properly thinning the branches that are too dense and too prosperous, moderately light and short, moderately slow down the weak branches and promote the growth of branches and leaves.