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: Do three-year-old cherry trees need pruning when they change places? Proper pruning during transplanting is beneficial to improve the survival rate of transplanting. The remaining number of branches is about 1/2.
Question 3: How to prune cherry trees? First of all, according to different planting methods, choose the appropriate tree shape.
If the plant spacing is about 2x4m, spindle pruning is adopted; If the plant spacing is 3x4m, small crown and sparse layer pruning should be adopted; If the plant spacing is 4x4m, open-heart pruning shall be adopted; If the plant spacing is 1.5x3.5, unilateral tree pruning will be adopted.
The cherry trees planted in the courtyard mainly adopt natural and happy pruning.
Plastic pruning is mainly carried out in winter dormancy period (it is best to finish pruning before germination 1 month).
The key points of pruning cherry trees in winter are: thinning straight branches, over-dense branches, weak branches, overlapping branches, cross branches, pest branches and so on. Back, and improve the lighting of the hall inside the crown. For young trees that have not yet borne fruit, it is necessary to widen the angle of main branches to ease the tree potential; Trees with too many flowers should properly remove some buds to prevent them from bearing fruit in different years.
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 down some 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 small cherry trees and peach trees?
Winter pruning: short pruning, thin pruning, long paving and retraction.
(1) Short cut: Cutting off part of annual branches is called short cut. There must be leaf buds when the short branches are cut. The function of short cutting is to reduce the number of leaf buds and flower buds on short cutting branches, strengthen the growth ability of new shoots of short cutting branches, reduce the branch position and enhance the branch ability.
Light and short cutting: cut off the total length of annual branches within 1M5. The new shoots sprouted in the following year have weak growth potential, but there are many new shoots, which are mostly used to cultivate medium, short and bouquetlike fruit branches. Or increase the number of fruiting branches and control the growth of new shoots after lightly cutting strong fruiting branches.
Short and medium cuttings: Cut off 1M2 of the total length of annual branches, and all buds under the cuttings are full. The new shoots germinated in the second year have strong growth potential, and a large number of robust new shoots are extracted, which are mostly used to prune the extension branches of the main side branches.
Heavy and short cutting: 2M3~3M4 of the total length of annual branches are cut off, and the plumpness of buds under the cutting mouth is poor, but the pruning amount is large, so the new shoots sprouting in the next year have strong growth potential, but the number of new shoots is small, which is mostly used to control the pruning of strong branches.
Extremely heavy short cutting: the total length of one-year-old branches is more than 5M6, and the sprouting branches in the second year are weak. This cutting method is mostly used to cultivate fruit branches with developing branches and overgrown fruit branches.
(2) thinning the branches from the base, which is called thinning, also called pruning. Thinning branches can reduce the density of branches in the crown, improve the ventilation condition of the crown, make the storage nutrition in the tree relatively concentrated and promote the growth of new shoots; Pruning will inhibit the upper part of the wound and promote the lower part of the wound. Removing useless twigs, diseased branches, clustered branches, overlapping branches and shady branches can promote the growth of the remaining branches.
(3) Let the annual branches grow naturally without pruning. Long-term planting can keep the most buds on branches and slow down the growth of new shoots in the next year. Too long fruiting branches or long fruiting branches with excessive growth potential will weaken the apical dominance and promote the formation of short and medium fruiting branches.
(4) Internal contraction refers to the short cutting of perennial branches, also known as reduction. Retraction can reduce the total length of branches, concentrate nutrients and water on the remaining branches, promote the growth of lower branches, and be beneficial to the rejuvenation of trees. Its function is to improve the light conditions in the crown, reduce the fruiting position, change the extension direction and angle of the extension branches, control the crown and prolong the fruiting period.
Problems needing attention in pruning peach trees
1. After pruning, the cut of the branch should be smooth, with a 45-degree slope with the cut bud, and cut down from the opposite side of the bud, with the top of the slope flush with the cut bud tip and the lowest part flush with the bud base, so that the cut wound is small, easy to heal, and the bud grows fast after germination. Cut off the opening of thinning branches, cut off at the branch point, and leave no stump even on the stem.
2. When pruning larger branches and trunks, the split operation method can be adopted. First, cut the kerf upward from the lower part of the branch at a position 20 cm above the required kerf, the depth is half of the thickness of the branch, and cut the branch from the upper part, leaving a residual pile, and then saw off the residual pile from the kerf to avoid splitting the branch.
3. In order to prevent the branches from rotting due to rain or bacteria invasion, the kerf must be smooth, disinfected with 20% copper sulfate solution, and finally coated with protective agent (protective wax, ready mixed paint, etc.). ) prevent corrosion and drying, and promote healing.
(Source quoted from "Questions and Answers on Key Technologies of Peach Production", China Agricultural Publishing House; Peasant workers 2009+0438+0
Summer pruning technique
(1) In the foliage stage (3~5 cm), the competitive buds of strong branches and extended branches from the upper part of the back of main branches and lateral branches, on the trunk and near the big incision were all erased. Remove double buds, leaving single buds, dry branches, branches of diseases and insect pests, waste buds, and reduce long fruitless branches. The sprout of rootstock should be cut off as soon as possible. By removing sprouting and smearing buds, useless new shoots can be reduced, nutrition can be concentrated, and the remaining branches can be fully developed, and flower buds and leaf buds are full. Sprouting can improve the light condition of the crown, greatly reduce the workload of pruning in summer and the damage caused by pruning branches in summer.
(2) Peeling is easy to produce branches, and peach trees themselves have a large number of secondary branches, which are more likely to cause too many secondary branches and close the crown. At present, except for young tree pruning, the main lateral branches need to be cored, and peach tree pruning in summer generally does not advocate new shoots.
(3) When new shoots are semi-lignified, there is room for twisting and competing branches near the extension branches of main branches and lateral branches, such as strong long branches and upright branches becoming lateral branches or large and medium-sized fruiting branches, and the long branches with few fruits or the parts of main branches that are easy to get sunburned. ......& gt& gt
Question 6: How to prune cherry trees? Pruning cherry trees in winter can be carried out from about 10 days after defoliation in autumn to early March.
First, according to different planting densities, choose the appropriate tree shape. The cherry trees planted in the courtyard can adopt natural heart-shaped or small crown sparse layer shape, and the dense planting garden generally adopts free spindle-shaped pruning. When pruning in winter, erect branches, over-dense branches, thin branches, cross branches, overlapping branches, pest branches, etc. The back is mainly thinned to improve the light in the inner hall of the crown and make the branches see the light. Young trees that have not yet borne fruit should pay attention to pulling branches and opening corners.
Question 7: After transplanting big cherry for 3 years, can it be pruned that year? After transplanting, fruit trees should be pruned properly, generally cutting off half branches, which has a high survival rate.
Question 8: A cherry tree in my house was too high in the third year. How to fix it without a fork? You mean that a cherry tree in your house is too high in the third year. No fork. What should I do? In fact, if a tree wants it to have a fork, it will only have a fork if its head is cut off. Otherwise, it will grow taller and have fewer fruits.
Question 9: How to prune the trunk and vertical lateral branches of three-year-old peach trees;
Leaving only the trunk;
It will grow well in a year.
Question 10: The method of C-pruning of peach trees in the third year is actually very similar, and the pruning technology of peach trees also needs pruning in winter and summer.
Winter: The period from late autumn to early winter when deciduous fruit trees or ornamental trees sprout in the following spring, or when evergreen trees stop growing in winter. Pruning is called winter pruning or dormant pruning, which is the most important pruning period in production. For a big orchard, young trees should be pruned first.