The key points of cherry tree pruning in winter are: according to the basic tree shape, choose the appropriate tree shape (natural joy shape, small crown shape, sparse layer shape); Pruning is mainly to remove (cut off from the base) erect branches, over-dense branches, over-thin branches, cross branches, overlapping branches, pest branches and so on. Back to improve the illumination of the crown hall; Give priority to thinning and take as few shortcuts as possible.
In the young tree period, we should pay attention to the angle of opening the main branches, relax the tree potential and bear fruit early.
Question 2: When is the best time to prune cherry trees? The branches of cherry trees are divided into developmental branches and fruiting branches. There are many developing branches on the young tree. The leaf buds in front are elongated and grow, expanding the crown, and the axillary buds in the lower part produce fruiting branches. After entering the fruiting stage, most annual branches are called fruiting branches, with terminal buds outside leaf buds and axillary buds mostly flower buds. Results Branches were divided into long fruit branches (15 ~ 20cm), middle fruit branches (5 ~ 15cm), short fruit branches (about 5cm) and flower cluster fruit branches (1 ~ 2cm) according to length. Judging from the fruit-setting ability, the fruit-setting ability of long fruit branches is poor, generally around 40%; The fruiting ability of intermediate fruit branches varies with varieties; Short fruit branches have high fruit setting rate and good fruit quality; Flower cluster fruit
Question 3: When can cherry trees be pruned? Pruning cherry trees generally takes three time periods: 1. Before the winter in the north freezes. 2. Before the spring buds. 3。 Summer after fruit harvest. Generally, summer pruning is the main method, supplemented by winter pruning. After pruning excess branches in summer, it is beneficial to ventilation, light transmission and nutrient storage.
Question 4: When will the cherry trees be pruned? 1. Prune cherry trees with heavy fruits.
Under normal circumstances, cherry trees can only enter the full fruit stage after 7-8 years of planting. This period is characterized by rapid growth of output and gradual decline of growth. Pruning in full fruit period is mainly to adjust the tree structure, improve the lighting conditions, maintain the vigorous tree vigor and prolong the full fruit period. In the process of pruning, we should always pay attention to thinning weak branches, retaining strong branches, adjusting the balance between growth and fruiting, keeping a large number of new shoots growing and an appropriate number of fruiting branches and vegetative branches, and constantly renewing, rejuvenating and aging. ...
2. Pruning technology of sweet cherry tree.
The main tasks of annual young trees are to increase branches and grow trees, reshape and expand crowns, cut buds and draw more branches to promote growth, slow branches and cultivate small crowns and sparse layers. (1) Fixed stem: after planting, the stem height is 60-80 cm. After germination, the buds below the stem height can be erased, and the buds above 50 cm should be strengthened to cultivate the lower branches. (2) Winter pruning: aiming at the flourishing branches and inner branches on the middle trunk or main branch. ..
3. Pruning methods of three-year-old cherry trees
For young cherry trees in the third year, the main pruning task is to finish crown shaping in spring. Based on the principle of restraining the strong and helping the weak, restraining the former and promoting the latter, the uniaxial elongation pruning method was adopted to cultivate uniaxial elongation large bearing branches and uniaxial elongation multi-bearing branches on the main branches to realize early fruiting and high yield. Attention should be paid to maintaining the master-slave relationship, balancing the tree potential, adjusting the composition and distribution of branches, and distinguishing the opening angles of main branches. Summer of three-year-old cherry tree
Question 5: How to prune cherry trees When is it suitable to prune cherry trees? They can be pruned all year round, but the pruning points are different in different seasons. The key points of pruning cherry trees in summer are: thinning upright and strong branches, over-dense branches, thin and weak branches, overlapping branches, cross branches, pests and diseases branches, etc. On the back, improve the illumination of the inner hall of the crown and promote the differentiation of flower buds. Give priority to thinning branches, and cut as little or no as possible. The pruning amount should not exceed 1/3 of the total branch amount.
Question 6: How to prune the big cherry tree 1, the pruning period and main pruning methods of the cherry tree.
Pruning of cherries can be divided into summer pruning and winter pruning.
Summer pruning: the purpose of summer pruning is to reduce the ineffective growth of new shoots, increase the amount of branches and leaves, improve the lighting conditions, and make the tree shape early, blossom early and bear fruit early. The main pruning methods are: opening angle, removing core, twisting tip, wiping bud, girdling, girdling and so on.
Winter pruning: Winter pruning refers to pruning after the trees enter the winter dormancy period. The main methods are: short cutting, slow release, retraction, refinement and so on.
2, the main tree and plastic process
Natural happiness: This tree is similar to the natural happiness of peach trees. Trunk height is 30-40 cm, and there is no trunk. The whole tree has 3-5 main branches with an opening angle of 30-40 degrees. Each main branch has 2-3 lateral branches, which extend outward at an opening angle of 70-80 degrees. Different types of fruiting branches are cultivated on the main branches and lateral branches. The height of the tree is controlled at about 3 meters, and the crown is flat or round.
Improved trunk shape: the trunk is 50-60 cm high and upright. The trunk is equipped with more than 65,438+00 main branches extending in a single axis, and the spiral is concentrated in the central trunk with a nearly horizontal angle; The main branch can be layered or not, and the bearing branch group is planted on the main branch; The height of a tree is generally about 3 meters. Planting density can be higher when it is low, and shorter when it is high.
Free spindle shape: there are 1 upright and stout central trunk, and the whole tree has 10- 12 small main branches distributed in the middle trunk. The lower main branch is longer and the upper main branch is shorter, and the ratio of dry branch to branch is 3-3.5: 1. The main branches can be arranged in layers of 3-4 bases, and the distance between layers is 30-40 cm, and then the main branches are inserted upward evenly in a spiral shape without layering. The main branches are big and small. The opening angle of the main branches on the same tree varies according to the position of the main branches. The lower branch is 80-85 degrees, and the upper branch is 85-90 degrees. The whole tree has main branches, no side branches, and the bearing branches are directly on the main branches.
Slender spindle shape: it has a central trunk, with a trunk height of 40-60 cm, a tree height of 2-3.5 m and a crown width of1.5-2.5 m. The first layer has three main branches, and there are no side branches on the main branches, which directly bear fruit branches. 15-25 horizontally growing lateral branches with the same size are evenly distributed on the central trunk above the main branch of the first layer, which are distributed in rotation, regardless of levels. The lower branches are slightly longer, the upper branches are slightly shorter, the whole tree is slender, the top is sharp, and the whole tree is slender and spindle-shaped, which is suitable for close planting in dwarfing culture.
Small crown sparse type: the stem height is 30-60 cm, the tree height is 3.0-3.5 m, the crown width is 3.0-3.5 m, and there are 6 main branches, which are divided into 3 layers, 3 1 layer, 2/layer and 3 1 layer. The base angle of the main branch is 60-70 degrees, and the spacing between layers is 60 cm. The main branches above the second floor do not leave side branches, and directly bear branches.
Hedge wall modeling: its vertical frame is similar to the double-arm vertical frame of grapes in the form of a tree, and the branches of sweet cherries are tied on the wire frame to form a hedge wall modeling.
3. Problems needing attention in cherry pruning.
The main problems are as follows: ① There are too many short sections, too long short sections and too many big branches in young tree modeling, which leads to crowded branches, poor lighting conditions and disordered tree shape; (2) All fruit trees will become shorter when pruning, regardless of variety; (3) Prune trees regardless of their strength; ④ The same pruning method should be adopted regardless of the growing season and age.
Problems that should be paid attention to: ① Pruning in winter can be carried out during the whole dormant period, but the later the cherry is, the better, and pruning in bud is generally appropriate. ② 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 bud segments. (3) After the branches of trees are injured, they are easily infected by germs, leading to glue leakage or disease. Therefore, in field management, special attention should be paid not to damage trees and branches. Cherry trees should be carefully girdled, and it is easy to flow off after girdling. ④ Cherry likes light and has strong polarity. When pruning, if there are too many short peripheral branches, there will be too many peripheral branches, and the branches will be crowded tightly, and the upper branches will be stronger than the lower branches. ⑤ Pay attention to variety characteristics. The wound healing of big cherry trees is slow after girdling, so the girdling width should not exceed 0.5cm, and because of the different vigor of big cherry trees, especially the application of organic fertilizer ...
Question 7: When will the big cherry tree be pruned in winter?
Question 8: When will cherry trees be pruned? Pruning can be carried out from 10 day after autumn leaves fall to half a month before spring germination. It's time to prune the cherry tree.
Question 9: Please tell me when is the best time to prune cherry trees. Cherry trees can be pruned all year round, but the points of pruning are different in different seasons (plastic pruning is mainly carried out in winter dormancy).
The key points of pruning cherry trees in summer are: thinning straight branches, over-dense branches, weak branches and diseases and pests on the back, improving the illumination in the crown and promoting the differentiation of flower buds. Branches with vertical growth angle open to about 80, which eases the growth potential and is beneficial to early fruiting.