Question 2: How to prune the orange tree 1. Pruning requirements for each growth period:
1. vegetative growth period: on the basis of fixed stem and seedlings, the crown is mainly shaped and cultivated. In the first and second years after planting, the main branches and secondary branches are cultivated continuously, and the lateral branches are arranged, so that the tree body is compact and the branches are flourishing. Cultivate shoots 3 ~ 4 times a year, form a crown as soon as possible, and remove buds in time.
2. Growth and fruiting period: continue to cultivate the crown and bear appropriate fruits. Promote new shoots 2 ~ 3 times a year, so that the branches are evenly arranged and a compact crown is formed as soon as possible. The middle and upper parts of plants do not bear fruit or bear little fruit during the day, and pruning is mainly based on bud wiping and shoot control.
3. Full fruiting period: the height of the tree is generally controlled below 250cm, the crown is wide, the periphery is concave and convex, the branches grow healthily, the thickness of the green leaf layer should be above 100cm, and the ventilation is transparent, resulting in a three-dimensional effect. Control the intersection between rows, and the crown coverage rate is 75% ~ 85%. Pruning suitable trees, deleting secrets and keeping sparse, removing the weak and keeping strong; Cut and stay, cut outside and stay inside; Cut down more trees and plant more flowers, and cut down less trees and plant less.
4. Aging period: retract and prune, renew or prune old fruit branches, new fruit branches press against the inner chamber or lower part, keep germination, prune densely and sparsely, arrange evenly, spend more flowers and prune more, and prune weak trees moderately.
2. Pruning period: from early February to mid-March in spring; Early July to mid-August is the summer and autumn season. In addition, from late April to early July, auxiliary pruning such as bud wiping, shoot control and flower cutting was carried out.
Third, pruning method: according to the characteristics of each variety and the strength of the tree.
1, multi-flowered trees should be felled again, and thinning should be combined; Trees with few flowers should be cut lightly, and only some dense branches and twigs should be deleted.
2, dead branches, serious pests and diseases, all cut off from the base.
3. Aging branches should be shortened, updated or deleted, and the length of updated branches depends on the strength and position of branches.
4. In principle, cut off the horizontal branches and long branches from the base, but when the middle and lower parts of the crown are empty, they can be appropriately cut short as regenerative branches or fill gaps; Dense branches should be trimmed properly, and those that are too long should be trimmed.
Question 3: How to Prune the orange tree Nandina domestica Pruning is mainly carried out in the dormant period combined with turning over the pots. Nandina domestica has strong germination ability. When pruning, cut the branches to any part, and new branches will grow on the nodes under the incision. Therefore, if the branches grow too long and affect the appearance, you can cut the branches to the appropriate parts to make the clustered branches uneven, and avoid cutting them into flat heads with the same height and dense stems. After the citrus tree entered the senescence stage from the full fruit stage, the vegetative growth was extremely weak, the senescence branches increased and the yield decreased. Renewal pruning is to cut off the aging part of the tree and promote it to form a new crown, thus improving the productivity of the old tree. Generally speaking, in addition to crown regeneration, root regeneration should also be combined with appropriate fertilizer to promote its growth. The regeneration and pruning should adopt different regeneration methods according to the degree of plant decline: (1) rotation regeneration method. Rotating updating method is also called local updating method. For some old trees with decayed branches and some still bearing fruit, some decayed 3-4-year-old lateral branches can be cut short first, and all crowns will be rotated in a planned way within 2-3 years. This method still has a certain output after several years of updating, and the output can be gradually improved after updating. (2) Explicit updating method. Explicit updating method is also called illumination updating method. For old trees that bear little or no fruit, cutting off 5 ~ 7 branches and deleting cross and overlapping branches is called dominant regeneration. This method can make the strong seedlings grow in the same year, remove the weak branches that are too dense and the branches that are too sparse in time, and restore the yield from the next year. (3) Main branch regeneration method. The main branch regeneration method is also called regeneration method. Some decaying old trees have their branches damaged by pests and diseases, but the lower part of the main backbone branches is still good. We can cut off the short strength of the main backbone branches and delete the thin and crooked big branches from the retained backbone branches. This method can make it take out strong new shoots in the same year, begin to bear fruit in the second year, and gradually increase the yield after the third year. (4) Root regeneration method. With the renewal of the ground, the underground must also be updated accordingly. Generally, the underground part can be dug at drip line on the periphery of the crown, and the rotten and decayed roots can be cut off. After 1 ~ 2 days of exposure, plant ash can be sprinkled on the cut roots, and high-quality compost or green manure can be applied to improve the soil and promote the occurrence of new roots. The above regeneration method is best carried out before the germination of spring buds. At this time, the sunshine is not strong, there are fewer pests and diseases, and the regenerated shoots are picked neatly. New branches can be picked 2 ~ 3 times in the same year, which is beneficial to the rapid recovery of crown. Secondly, in order to update successfully, we must also pay attention to the pruning method. When cutting or sawing, the cortex below the incision should not be damaged, and the incision should be flat. After pruning, wax the wound, and then wrap the trunk and branches with straw. After selecting buds, remove unnecessary buds, remove the core from the long buds, spray chemicals to protect the new buds, and pay special attention to the prevention and control of diseases and citrus psylla. Strengthen the management of fertilizer and water, otherwise the predetermined effect will not be achieved.
Question 4: How to prune potted oranges and how to prune the branches of orange trees? Let it sprout again. By the way, you can also repair trees. Farmers grow fruit trees like this. Don't force it.
Question 5: When should orange trees be pruned in winter? Remove the horizontal branches, old branches, weak branches and diseased branches, then dig a shallow ditch near the roots and apply some fertilizer. If only this circle were as big as the largest diameter of the branches hanging on the ground.
Question 6: How to prune and cultivate orange trees after the Spring Festival? Before spring shoots sprout, potted oranges must be pruned intensively. First, dead branches, diseased branches, clustered branches, inward branches, cross branches and sprouting branches must be removed. Weakly cut strong branches, leaving 4 or 5 full buds; Strong pruning of weak branches leaves 2 or 3 buds, so that each branch can grow stronger spring shoots. After the spring shoots are fully grown, in order to control their imaginary length, they can be lightly cut and 3 or 4 branches can be cut off. When the new shoots grow to 6 ~ 8 knots, it is necessary to remove the heart to induce more summer shoots.
In order to prevent the summer shoots from growing too vigorously, at the same time, let the trees accumulate nutrients and promote the formation of buds, potted oranges should be "watered" before summer. The specific method is to gradually reduce the water supply to potted oranges more than ten days before the hot summer; In the first 5 days, the water was stopped, the basin soil was exposed to the sun, a lot of water evaporated, and the basin soil was dry; Due to the lack of water in roots, branches and leaves lose water, and leaves wither and curl. In order to prevent the leaves from dehydration, water can be sprayed on the leaves in the morning and evening, and a small amount of water can be sprayed on the pot soil at the same time, so that the axillary buds of oranges expand day by day under the condition of drought and not dying, and the color of the buds turns from green to white. When most axillary buds turn from green to white, "withholding water" will succeed in promoting flowers. At this time, it is necessary to restore the water supply of potted oranges in time.
Question 7: How do orange trees prune the video and go to China Plant Protection Network? Let's watch it on Internet TV! Where are many plant protection videos?
Question 8: Do orange trees need pruning? Need, pruning method: according to the characteristics of each variety and the strength of the tree.
1, multi-flowered trees should be felled again, and thinning should be combined; Trees with few flowers should be cut lightly, and only some dense branches and twigs should be deleted.
2, dead branches, serious pests and diseases, all cut off from the base.
3. Aging branches should be shortened, updated or deleted, and the length of updated branches depends on the strength and position of branches.
4. In principle, cut off the horizontal branches and long branches from the base, but when the middle and lower parts of the crown are empty, they can be appropriately cut short as regenerative branches or fill gaps; Dense branches should be trimmed properly, and those that are too long should be trimmed.
Question 9: How to prune orange trees? It is necessary to put an antibacterial film on the wound in time, which can quickly form an antibacterial film, seal the wound and heal quickly. Anti-freezing, anti-virus invasion, anti-rot disease spread, anti-wintering pest habitat and reproduction, anti-rain and water pollution, anti-large area wound cracking. Painting the sunny side of the tree can prevent sunburn.
Question 10: How to fertilize and prune orange trees? What is the best season? It's simple. Make sure your tree is not that big, so you hang a lot of fruit on it. Also, it is best to fertilize it with humus and bury it below. Ternary compound fertilizer can also be used. Dig a ditch under the fruit tree drip line and fertilize it. Eight or nine leaves will leave a fruit. If too many fruits grow, the tree will be negatively nutritious. After the second year, the tree was poor. It's good to be dead. Prune the branches first, and cultivate the trees before hanging fruit. Attention, when pruning, don't prune the shady branches in the inner hall. Those are fruitful branches. If you cut them, you will lose half of the fruit! Pruning is mainly sick branches, dead branches and long branches! !