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Winter and spring is an important pruning season for big cherries, when it is mainly to remove some excess branches to reduce nutrient consumption and make the tree robust and healthy growth. When the fruit tree is pruned in place and grows well, cherry can get better effect of increasing yield and improving quality.

[1] Truncation method:

1. Light truncation method: Cut off 1/5 ~ 1/4 of the cherry branches; The main purpose of light truncation is to weaken the apex dominance of branches, increase the germination rate, increase the number of short branches, and form more bouquet bearing branches in the future. Therefore, cutting horizontal and oblique branches lightly on young trees can increase the amount of short branches, which is conducive to early fruit.

2. Medium and short cutting method: Cut off 1/3 ~ 1/2 of the cherry branches; It is mainly to cut the backbone branches and the developing branches with growth space in the periphery, in order to promote the growth of the middle and long branches and expand the tree crown.

3. Heavy truncation method: Cut off 2/3 of the cherry branches; It is mainly used for the balanced tree potential of young trees, such as the implementation of heavy truncation of rich branches, which can weaken the growth potential of rich branches and cultivate the fruit branch group.

4, extremely heavy truncation method: leave only 4 to 5 bud truncation at the base of the cherry tree. It is mainly used to control competing branches and over-flourishing branches. When there are axillary flower buds at the base of the branch to be thinned, it can be cut very heavily first, retain the flower buds at the base, and then thinned after the results.

[2] Thinning pruning method:

The main purpose of thinning branches is to reduce nutrient consumption and improve ventilation and light transmission conditions. If it is greenhouse cherry cultivation dormant period pruning should not be too sparse branches, mainly to adjust the tree shape after picking fruit. The wound should be treated in time when pruning, and the callus paste and lead oil can be applied and closed to avoid dry cracking and glue flow.

[3] Retraction pruning method:

For some need to renew and rejuvenate the fruit branches, generally more retraction is used to reduce nutrient consumption and enhance the growth potential of trees. Especially some sagging branches, it is easy to cause the phenomenon of baldness in the middle and lower part of the crown, and the method of shrinkage and rejuvenation can be used. After the large branches shrink, new branches will sprout, leaving the best strong branches for culture ！

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