Generally, the pruning time of dormant cherry trees is near the germination stage, because premature pruning of cherry trees is easy to cause wound dehydration, resulting in dead branches and gum flow.
Pruning the cherry tree after germination will soon heal the wound.
According to the above summary, the pruning of cherry trees in the open field should be carried out in the bud, and the cherry trees in the protected field can be carried out when the temperature begins to rise.
Below, Bian Xiao compiled the pruning methods of cherry trees for your reference.
Pruning method 1. Pruning method of cherry tree:
1, light chopping method: cherry branches are cut off1/5 ~1/4; Light cutting and short cutting can weaken the advantage of branch top, which is beneficial to improve germination rate, increase the amount of short branches and form more fruit branches.
Therefore, light pruning and short pruning of horizontal branches and oblique branches on young trees can increase the amount of short branches and facilitate early fruiting.
2. Medium-short cutting method: cut off 1/3 ~ 1/2 of cherry branches; In the process of pruning cherry trees, the main branches and developing branches with growth space around them are usually cut into short and medium-long branches, which can generally promote 3 ~ 5 medium-long branches and help expand the crown.
3, heavy and short cutting method: cut off 2/3 branches of the cherry tree; This method is mostly used to balance the tree potential of young trees. For example, the annual strong branches and strong branches can be cut off, which can reduce the growth vitality of strong branches.
It can also be used to cultivate fruiting branches, such as cutting off the branches on the back of main branches, lowering the position of hair branches, and slowly releasing branches in the next year to cultivate fruiting branches.
4. Extremely heavy cutting method: only 4 ~ 5 buds at the base of cherry tree are cut short.
This method is mostly used to control competing branches and excessive branches.
When there are axillary flower buds at the base of the branches to be thinned, extremely heavy short cutting can be carried out first, and the flower buds at the base can be kept, and then thinning can be carried out after the results are obtained.
Pruning method 2. Pruning method for thinning cherry trees:
Pruning is mainly to remove too dense branches, cross branches and overlapping branches of cherry, which can reduce nutrient consumption and improve lighting conditions.
However, the pruning and thinning of cherry cultivated in protected field should not be too much, and the tree shape should be adjusted mainly after the fruit is harvested.
Moreover, in order to protect the wound, lead oil can be applied to the wound, so as not to cause the wound to flow or dry.
Pruning method three. Pruning method of cherry tree retraction;
Retraction has the functions of reducing fruiting parts, saving nutrition and enhancing growth potential, and is often used for regeneration and rejuvenation of fruit-bearing branches.
If you cut the drooping branches to the upper branches, cut the weak branches to the strong branches.
In the full fruit period of cherry trees, the growth potential of new shoots weakened, some branches drooped, and baldness appeared in the middle and lower part of the crown. In order to improve the light, reduce the number of branchlets on the big branches, concentrate nutrients and water on the left branches, and make the fruiting branches contract, renew and rejuvenate.
After the big branches are retracted, several sprouting strips can be pulled out from the retracted position. We should choose a robust and suitable branch as the regeneration branch and adjust the angle in time.
Excess sprouting strips should be removed to promote the growth of regenerated branches.
Pruning method 4. Pruning methods of slow-release cherry trees;
1 year-old branches without pruning are called slow release.
Generally speaking, the growth potential of slow-release branches decreased year by year, the middle and long branches decreased, and the short branches and bouquetlike fruit branches increased, which was beneficial to fruit bearing.
But it is not suitable for slow strong branches, especially for upright strong branches.
Even if you slow down, you must first overwhelm it and then slow down.
Young sweet cherry trees and early fruiting trees can slow down some flat branches and oblique branches with moderate growth potential, and promote more bouquetlike fruit branches to bear fruit early.