Renewal and pruning should adopt different renewal methods according to different degrees of plant decline:
(1) rotation updating 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 2: orange tree pruning video orange trees like light and are drought-tolerant. Potted plants are generally better placed in a bright and ventilated place on the balcony. Cut off the back branches, long branches, horizontal branches and short fruit branches to increase light transmittance and ventilation. It is best to add some compound fertilizer when watering, and the plants will grow better and more vigorously.
Question 3: How to prune orange trees?
? How to prune citrus trees
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 old trees with some branches declining and some branches still bearing fruit, 3 ~ 4-year-old lateral branches with some branches declining can be carried out first. ...
? How to prune citrus trees
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 old trees with some branches declining and some branches still bearing fruit, 3 ~ 4-year-old lateral branches with some branches declining can be carried out first. ...
? How to prune kumquat
Pruning techniques of garden kumquat are as follows: (1) Young tree pruning: Young kumquat trees should be lightly pruned. Generally, only long branches, dead branches, pest branches and sprouting branches are cut off. (2) Pruning of aging branches: After kumquat enters the full fruit stage, the aging branches outside the crown can be cut off from the base to restore the tree. (3) Pruning of green branches: Except for long branches, the new branches of kumquat in the full fruit period are generally not long, and some of them grow 2-3 branches with different lengths at the same position at the top. For this kind of branch at the same level, we can adopt the method of preserving strength and removing weakness. ...
? How to prune the branches of orange trees?
Pruning orange trees is a highly technical job, which should be mastered flexibly according to different growth periods, tree size, growth intensity and year. Below I will briefly introduce the pruning requirements of orange trees in each growth period, hoping to help you. 1. Pruning requirements in each growth period: 1. Vegetative growth period: on the basis of fixed seedling shaping, the crown is mainly cultivated by shaping, and the main branch and auxiliary branch are continuously cultivated in the first 1 and second year after planting, with side branches, so that the tree body is compact and lush. Culture 3 ~ 4 times a year. ...
Question 4: How do orange trees prune the video on China Plant Protection Network? Let's watch it on Internet TV! Where are many plant protection videos?
Question 5: 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 6: There is no particularly effective medicine to cure citrus Huanglongbing. Its prevention and control can only be based on prevention, supplemented by governance. The main control measures are: 1, strengthen seedling quarantine, prevent pathogen invasion and export, and prevent diseased ears, diseased seedlings and diseased fruits from entering new planting areas and disease-free areas. 2. Establish disease-free nursery and cultivate disease-free seedlings. Nursery land should be selected in areas with no epidemic areas and good isolation conditions, or closed nurseries with plastic shed isolation. Rootstock seeds should be collected from disease-free trees and soaked in hot water before sowing, that is, the seeds should be soaked in hot water at about 50℃ for 5 minutes, and then soaked in hot water at about 55℃ for 50 minutes after taking out. It can also be soaked in tetracycline hydrochloride or oxytetracycline hydrochloride 1000 times for 2 hours. Scions should be taken from disease-free mother trees, preferably from disease-free areas. Before grafting, it should be soaked in tetracycline hydrochloride 1000 times 1.5 hours, and then washed with clear water before grafting. 3, timely prevention and control of pests, eliminate the vector. ① Clean the garden in winter. Killing psyllid in wintering period is the key to annual control. (2) In spring, summer and autumn, when the branches are sprayed neatly, spray 800 times of 40% isocarbophos EC, 800 times of 50% omethoate EC and 2000 ~ 3000 times of 20% metronidazole EC to kill psyllid. (3) When aphids occur in new shoots over 65,438+0/3, spray with 50% malathion EC or 40% dimethoate EC at 65,438+0,000 times. 4. Dig out diseased trees as soon as possible to reduce the source of germs. Every time the buds turn green, check every tree carefully and comprehensively. Once the diseased plants are found, they should be dug up as soon as possible, leaving no residual piles, and transported to the gap outside the orange orchard to burn to ashes. Orange orchard c should be of the same variety, and the scattered branches should be removed in time to make the branches neat and reduce the spawning grounds. Cut down the weak trees that lose the ability to bear fruit and reduce the source of diseases and pests. 5, timely injection of drugs, reduce the degree of harm. Injecting tetracycline hydrochloride or penicillin 1000 times solution into the trunk of fruit trees at the early stage of the disease has certain inhibitory and preventive effects on Huanglongbing. 6. Strengthen fertilizer and water management and improve plant disease resistance. For young trees, in the growing season from April to August, apply thin water and fertilizer once a month, 4-6 times a year. Fruit trees should be fertilized with bud grafting fertilizer, fruit stabilizing fertilizer, fruit strengthening fertilizer and fruit picking fertilizer every year. At the same time, it is necessary to manage water scientifically to ensure timely and sufficient water supply. Otherwise, excessive moisture or humidity will cause root rot and foot rot, and even grow trees in severe cases; Too little water or serious water shortage will wither plants and weaken their growth potential, even trees.
Question 7: Pruning method of orange tree pruning is a highly technical job, which should be mastered flexibly according to different growth periods, tree size, growth strength and year. Below I will briefly introduce the pruning requirements of orange trees in each growth period, hoping to help you.
A, each growth period pruning requirements:
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 8: How to fertilize and prune orange trees? What season is the best? 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 the fruits. 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! !
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 Prune Potted citrus reticulata The pruning of potted citrus reticulata mainly includes cutting short, controlling buds and draining. First, it will be carried out 10~20 days before shooting. Only the terminal buds were cut off in the current year, leaving10 ~15 cm; Second, before the spring buds germinate, the plants that are not arranged to bear fruit in winter and spring are pruned again and again for weak branches, and sometimes they can be pruned again to the lower branches last year or the year before last. Shooting control refers to manually erasing shoots below 3cm, sporadic buds and early buds to promote the flowering of new shoots. Thinning branches means cutting off dense branches, dead branches, insect pests and residual branches, so that the crown density is reasonable, the branches are evenly distributed, the illumination is improved, the pests and diseases are reduced, and the fruit quality is improved.