A big purple type cherry
1. Pruning of young trees. The large purple type of cherry has a strong branching ability, and it can increase the branch weight regardless of the severity. Therefore, the young tree has a short cut. Saplings are fine and have a large angle, and should be shortened when the main branch is short. After long-term growth, the decline of short fruit branches will be accelerated, and the resulting parts will soon move outward. The auxiliary branches of the saplings can be slowly pruned and then retracted. If the gap between the crowns is large, it can be laid out multiple times and retracted several times to promote branching and increase the result area.
2. Pruning of the initial result tree. The tree of initial results is mainly to cultivate large, medium, and small fruiting branches. When cultivating large and medium-sized fruiting branches, select Mongol with a diameter of 70 to 80 centimeters, and retreat after releasing it for 1 to 2 years. For medium branches with a length of 40 cm, they are mostly used for the cultivation of small branches. When adopting the method of first retracting and then retracting, the results should be paid attention to when the result is not weak after retreating, and not rejuvenated to maintain moderate growth so as to achieve more results.
3. Retract middle and long fruit branches. Big purple type of cherry, mainly in the long fruit branch results. In order to maintain a certain proportion of medium and long fruiting branches, timely retraction should be based on the growth of long fruiting branches and the number of fruiting branches formed. The number of developmental branches retained after retraction should not be excessive, so as not to reduce the fruit setting rate. If there are few branches after retraction or no branches are drawn at all, it will affect the yield. Therefore, when retracting, it must be based on tree vigor, fertilizer conditions, and the branch's habitat, so that the retreat is not prosperous and slow release is not weak.
Second, Naon type varieties
1. Pruning of young trees. Naon type varieties include Nagung, Hongfeng, crystal, late yellow and late red. The pruning of young trees of this type should be light, and they should be cut short enough to increase the amount of foliage, but the short period of time is up to 3 years.
2. The trimming of the resulting tree. According to the experiences of fruit industry technicians in Zaozhuang City, Shandong Province, the branches of Nagweng and other varieties are mainly whip-type branches. For a tree with a large row spacing, it is also appropriate to short-cut some of the branches, but the number should not be too large, so as not to affect the light. After entering the result period, the tree should be lightly trimmed, and the result should not be cut for the result.
3. Pruning of aging trees. Trees that enter the aging period should be updated in time. For trees that need to be updated, base fertilizer should be added in the previous year so that latent buds can germinate and more shoots can be drawn. The renewal time is suitable before and after sprouting in early spring, because the germination rate and branching force are significantly reduced after winter renewal. If the garden needs to be renewed, it is better to plant the cherry seedlings after planting other crops for 3 to 5 years.
Third, purple cherry type varieties
The main varieties of this type of cherries are chicken heart, short handle violet and glass bubble. Its growth characteristics: weak branching, small branches, short trees, small crowns, short bouquet-like results of fruiting branches, short fruiting branches less, medium and long fruiting branches rarely. As a result, branches have natural branching ability, and after the result, short fruit branch groups are easily formed.
1. Pruning of young trees. During saplings, due to weak branching, development branches should be short, thin and weak branches should be short and heavy, and the number of short cuts should be large, and the length of short cuts should be long, usually 3 years. After 3 years, put them shortly and slowly to increase the amount of branches and the result area. Summer picking will reduce the ability of developing branches to pull branches and the number of branches, and even the formation of small old trees, so generally do not carry out summer pruning.
2. Pruning of the initial result tree. The purple cherry trees in the early fruiting period mainly cultivated fruiting branches. No matter what kind of branch is cultivated, it must be determined according to the tree potential and branching tendency, or it should be cut short after being put first, or it should be put slowly after being cut short.
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