From August to October, the big cherry tree is in the late stage of flower bud morphological differentiation. At this time, pruning can improve the tree structure and lighting conditions, promote nutrient accumulation, enrich the shoots, and revitalize the inner chamber.

1. Thinning branches and thinning branches are mainly to remove buds, dry branches, extra long branches, competing branches, disease and insect branches, thin branches, drooping branches, overdense branches, overlapping branches and verticillate branches, and branches and branch groups in the crown. The apex of the strong strip that was born that year opens the canopy light path, improves the light in the inner chamber, and enriches the flower buds. In a year, a tree can be sparse up to 2 large branches, but don't form opposite injuries.

2. Branching Practice has proved that the branch opening angle of big cherry in autumn is better than that in spring. The best time to pull branches in autumn is from August to September. During this period, the opening angle of the branches can make all buds develop in a balanced manner, and there are fewer upright branches on the back, which has a better effect. The base angle of the main branch of the first layer of big cherry is about 80 degrees, the tip angle is 65 to 70 degrees, and the auxiliary branch opening angle is 80 to 90 degrees. When pulling the branch opening angle, pay attention to timely moving the rope or falling object to prevent the tip angle. Heart grows.

3. When shrinking the branches, first temporarily release the temporary branches for more than 2 years when pruning in spring and summer. The long branches and large-leaf bud branches that were extracted during the summer "topping", as well as perennial large and medium branch groups and auxiliary nursery branches. According to the needs of space, shrink back and trim to restrain the front and back, concentrate nutrition, and promote the formation of flower buds. In addition, for weakly growing branch groups, 2 to 3 branches are left to retract and grow stronger.

4. Topping To make the last topping in late September, to enrich the branches and enhance cold resistance, which is beneficial for safe wintering.

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