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Click August 3, 2005: 1 time

The growth potential of big trees is moderate at full fruit stage. Because of many fruits and drooping branches, twigs are not easy to form flower buds. When pruning, we should master the principles of proper heavy pruning, less pruning of strong branches, more pruning of weak branches and no thinning, adjust the relationship between growth and fruit, keep the tree strong and prolong the life of full fruit. The extension branches of the main lateral branches are shortened appropriately, and generally cut off 1/2-2/3. If the main branch is drooping, choose a strong branch from the back and remove the original branch. Perennial auxiliary branches and drooping branches should be retracted on strong branchlets or branches with many hidden buds, and the long intermediate branches planted on them should be partially truncated, partially released and partially fruited to ensure yield. The long fruit branches and middle fruit branches in the crown are getting shorter and shorter, and the perennial fruit branches outside the crown are partially retracted, so that the branches are released and contracted. The combination of release and contraction improves the ventilation and light transmission conditions.

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How to prune apricot trees in the courtyard?

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2004165438+122 October Click: 10 times.

How to prune apricot trees in the courtyard? (1) plastic surgery: natural round head modeling, evacuation layered modeling. ① Natural round head, stem height 50-60 cm, no obvious central trunk, 5-8 main branches planted on the trunk, of which 65,438+0 main branches grow upright. The main branch has a side branch every 50 cm, and a branch group is attached to the side branch, or the side branch is replaced by a large branch group. This kind of tree is characterized by small pruning, quick forming, early fruiting and high yield, but it is prone to hollow crown and exposed legs of main branches. (2) Take time to laminate, which is suitable for varieties with strong dryness. There is an obvious central stem, 40-70 cm high, with 3-4 main branches on the first floor and 2-3 main branches on the second floor. The interlayer spacing is 20-30cm, and the interlayer spacing is 100- 120cm. The lateral branch spacing is 40-60 cm. This kind of tree has many branches, high yield and long economic life, but it is easy to form late stage because of poor control. When choosing these two tree types for apricot cultivation in the courtyard, we should reduce the fixed stem height, simplify the tree structure, reduce the number of backbone branches, or directly cultivate fruiting branches on the main branches without leaving side branches to meet the requirements of low stem, short crown, early fruit and high yield of apricot trees in the courtyard. According to the actual situation of courtyard cultivation space, the fixed stem height can also be appropriately increased, but the maximum height should not exceed 1 m. (2) Pruning: Young apricot trees grow vigorously and the branches grow irregularly. Trimming should focus on plastic surgery. Select and keep well-cultivated backbone branches, carry out annual exhibition and short cutting to maintain their growth advantages, and select and keep some branches with moderate growth potential as auxiliary branches. When pruning in summer, the long branches in the inner chamber and the strong branches on the back can be sprouted, cored or leveled in time to reduce the amount of thinning in winter pruning. After a large number of fruits, we should pay attention to maintaining the tree potential, maintaining the growth advantage of the backbone branches, thinning out the over-dense branches and overlapping branches, and ensuring the illumination of the crown. Secondly, we should pay attention to the retraction and rejuvenation of fruiting branches and the renewal of new branches.

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Pruning times of apricot trees in summer: 23 times

Product Category: Watermelon Fruit Release Date: 2004-12-1814: 44:15.

Pruning apricot trees in summer

Pruning apricot trees in summer is an important part of pruning all year round. Reasonable summer pruning plays an important role in the rapid formation of young trees and the improvement of fruit yield in the early next year.

1. When young trees are pruned in summer, excessive branches, competitive branches and back branches in new branches should be cut off or thinned. The main lateral branches and the extension branches of the central trunk should be picked in late June to stimulate the germination of secondary branches and increase the order and number of branches and buds, which not only makes the crown of apricot trees form early, relieves the growth of branches, but also reduces the ineffective growth of branches. Saving too many dense branches can improve the ventilation and light transmission conditions of young trees.

2. Pruning trees at the beginning of fruit in summer Pruning apricot trees at the beginning of fruit is mainly based on thinning or heavy pruning, thinning or heavy pruning or short pruning, including competitive branches, back branches and long branches, reasonably thinning out over-dense branches, improving ventilation and light transmission, and preventing the growth of invalid branches.

Third, prune and refresh the old trees to revitalize them. Summer pruning is very important. For example, the big branches retracted in winter will have a large number of new shoots and strong growth potential in the coming year. When pruning in summer, the back branches and long branches should be thinned or cut short to reduce the growth of useless branches and increase the rapid growth of reserved branches. Unblock the over-dense branches, cut short the main growing points with vigorous growth, induce secondary branches, and increase the number of branches and buds. Summer pruning should be carried out several times in June-August.

4. Precautions In order to make the nutrition fully supplied, keep the branches and remove the useless branches, the newly grown secondary branches in spring should be pruned in summer, which is generally carried out in June-August in our province.

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How to prune aging apricot trees?

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After the apricot tree enters the aging period, the branches are weak and it is not easy to form flower buds. Although some flowers can become flowers, most of them are abortive, with poor effect and low yield. Therefore, pruning should update the backbone branches and branches, increase the tree potential and prolong the fruit-bearing life.

1, according to the requirements of natural semicircle or thinning and layering, thinning 2-3 rounds of backbone branches will be carried out in stages and batches, which will not affect the tree potential and yield. 2. After the main branch is burnt, the branches sprouting at the base or middle of the main branch should be reasonably adjusted and retracted at the long branch or good branch to form a COVID-19. 3. Bored branches are extended for many years, and the upper branches, drooping branches and insect branches are generally reduced to 4-5 years old, with good branches. 4. Trigeminal branches can be thinned out in the middle, overlapping branches should be thinned out, improper placement and weak growth, competitive branches and clustered branches should be thinned out. 5. A long branch grows in the inner chamber every year, which should be appropriately shortened to promote its fruiting branches and prevent emptiness. 6. For the wound of the big branch, first use a pruning knife to flatten the surrounding cortex and xylem, then disinfect it with a 5-degree stone sulfur mixture, and finally apply a protective agent. (Li Puyue)

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Pruning apricot trees in winter

Hebei fruit tree

1 Pruning of young trees and first-bearing trees in winter: Pruning in this period should give attention to both shaping and fruiting. The extended branches of main branches and lateral branches should be lightly cut and lengthened, and generally 2/3 of the total branch length should be reserved for short cutting. Sparse crowded branches, multi-branched branches, overlapping branches and strong flourishing branches, and control the growth of competitive branches and upright flourishing branches. For developing branches with moderate growth and relatively wide angle, they should be released slowly to promote the germination of short branches and middle branches, increase the number of fruiting branches, and retract in time after flowering or fruiting to form fruiting branches. The middle and short branches have a large angle and are easy to bloom, so they should be preserved as much as possible to facilitate the fruiting. For young trees with weak growth potential, appropriately cut them short, remove the branches that are too dense and too thin, keep more strong branches, and flatten the upright branches as auxiliary branches to promote the development of short and medium fruit branches.

Pruning trees in winter at full fruit stage: the main task is to adjust the relationship between growth and fruiting, maintain tree vigor and prolong the fruiting period at full fruit stage. When pruning, according to the growth of branches and the spatial situation of each part of the crown, the density and pruning can be appropriately reduced to maintain stable fruiting parts and growth potential. Generally, the elongated branches at all levels are moderately cut short (1/3 ~ 2/3 of the branches in that year), so that they can continue to grow strong new branches. For weak main branches, lateral branches, perennial auxiliary branches, fruiting branches and drooping branches, the strong branches are partially retracted to update or raise the angle to restore their growth potential. For the lower and inner branches of the crown, we should pay attention to the timely renewal and rejuvenation, so that they can continuously produce new robust fruiting branches. Too dense branches and thick branches in the upper and outer parts of the crown should be retracted or thinned to improve the illumination in the inner room. Apricot trees have weak branching ability. As long as the fruiting branches, long fruiting branches and medium growing branches in each part are not too dense, don't thin branches, but short branches can be shortened to promote a small number of long branches, so that the middle and lower parts can bear fruit alternately.

3. Pruning of trees in winter during senescence: during senescence, the growth of each extension branch of apricot trees becomes weak, the new shoots become shorter, the backbone branches begin to droop, and the inside of the crown begins to be exposed, which almost only bears fruit on the surface of the crown, and the yield decreases. The main task of pruning is to renew the backbone branches and branches, enhance the tree potential and prolong the economic fruiting period. You need to use branches with small back angle and vigorous growth in the middle and lower parts to change your head. Or shrink on a relatively upright branch to promote the germination and regeneration of cryptoshoots. Tendrils with suitable positions should be cultivated into main branches and fruiting branches. For the bearing branches and bearing branches, based on the principle of removing the weak and retaining the strong, strong branches and strong buds are selected for updating and pruning. If the tree is extremely weak and the regeneration effect is not good, it is necessary to strengthen the management of fertilizer and water, and carry out a large-scale whole tree regeneration in the annual parts of the main branches and large branches of10/5, which can be completed at one time, and a large number of new branches can sprout in that year. Bud smearing in summer, coring, shaping and pruning in winter can restore flowers and fruits in the next year.