When is the jujube tree circumcised?

When will the jujube trees be cut down?

The flowering period is girdling, usually in the first half of June.

When is the best time to girdle jujube trees several times a year?

Circumcision at flowering stage. It can be carried out from early flowering to full flowering. Choose a sunny and windless day, and choose a place with a smooth trunk and no thorns 30 cm from the ground. First, use a sharp knife to remove a circle of old bark with a width of about 1.5 cm, and then use a sharp knife to remove a circle of small trees with a width of about 0.3 ~ 0.6 cm where the old bark is removed. When the nail is opened again in the second year, it is 5 cm above the nail opening in the first year. 5 ~ 8-year-old trees, strong trees and trees in full fruit period should be selected for opening armour. After circumcision, the wound should be bandaged with plastic film to prevent wound infection and strengthen the management of fertilizer and water.

How to cut jujube trees around.

High-yield techniques of jujube tree cutting and ring cutting

Please see wenku.baidu/...ACbjhq..

When will the jujube trees be cut down?

When flowering

When are winter dates cut twice?

The girdling of winter jujube trees varies from tree to tree.

First, the girdling time is generally determined according to the age of the tree, the potential of the tree, the quality of the flowers, the number of flowers, etc. Trees that are more than three years old, strong and have a high amount of flowers will bloom. Understand the weather changes before opening armour, and strive for no rain within 3 days after opening armour. During this period, Jia Kaidong jujube had neat fruit setting, large single fruit and moderate number of fruit setting.

Second, the selection of girdling parts has achieved initial results. The girdling of winter jujube trees should leave vegetative branches, and the girdling on the trunk should be changed to the girdling on the branches, and the vegetative branches account for about 20% of the total branches. Leaving too little can not meet the absorption of organic nutrients by roots; Too much is left, and the due output cannot be obtained. The vegetative branches should choose branches with weak growth potential and large opening angle, so as to avoid the vegetative branches growing too vigorously and competing for nutrition. Trees with weak tree vigor at flowering stage should be restored first. If the recovery is poor, do not waist seal, only spray 920; If it recovers well, it can be girdled according to the flowering quality.

Third, the girdling width, the healing time of winter jujube nail mouth is longer than that of other jujube trees, and the girdling width should be determined according to the tree potential. The first girdling should be controlled within1/kloc-0 ~1/8 of the girdling site diameter, the maximum width should not exceed 1 cm, and the healing time should be controlled within about 25 days. After the first girdling, observe the healing situation every day. If the trees are flourishing and the nail mouth heals quickly, the second girdling or girdling should be carried out in time before the nail mouth heals, and the width of the second girdling should be controlled within 0.5 cm.

Fourth, protect your mouth.

1. Protect the new home. Listen to the medium and long-term weather forecast, so that it won't rain during girdling or within three days after girdling, so as to leave enough time to "sun nail holes"; 5-7 days after girdling, spraying chlorpyrifos water solution at the mouth of nail every 4-6 days, which is 0/00 times of/kloc; After girdling for 20 days, the nail opening with slow healing can be coated with high concentration of 920, and then the healing of the nail opening can be checked regularly, and the nail opening in the plastic film can be cleaned in time; Remove the film from nails before the end of September, and completely remove the beetles in the film.

2. Protection of hometown. With the increase of girdling times, the harm of scarabs is also increasing year by year, and some even cause dead trees. Before and after girdling every year, the onychomycosis on the old nail opening should be inspected in time, and pesticides should be sprayed on the old nail opening with poor healing combined with the new nail opening. At the beginning of May every year, a high concentration of 920 should be applied to the poorly healed nail opening to promote its healing as soon as possible before flowering.

5, girdling, re-cutting and thinning the vegetative branches and competitive branches with no gaps in the inner cavities of the jujube elongated branches in the current year; 4 ~ 6 secondary branches should be reserved for the extended branches, and 2 ~ 4 nodes should be reserved for the remaining secondary branches to reduce nutrient consumption and promote fruit setting.

How to cut down jujube trees planted for two years? 10 point

Two years of floating trees are still small, and there is no problem with ring cutting. The method is to cut the bark with a knife from above the ground 10 cm to the xylem and make a circle along the trunk. Generally, girdling is advocated when the roughness reaches more than 5 cm.

Jujube ring cutting pictures Jujube ring cutting several times a year, when is the best?

Jujube trees are circumcised once a year, preferably in full bloom, which can improve the fruit setting rate.

3-5-year-old low-yield jujube trees cut their trunks once, and particularly prosperous young trees cut their trunks twice. When girdling, the cortex is cut off and reaches the xylem.

How to cut jujube trees during flowering?

Jujube tree ring cutting doesn't need video, I can tell you about it. Take Dongying as an example. After the flowers bloom every year, around June 10, cut the bark at the base of the tree for a week, the width should not exceed one centimeter, and the depth should reach the xylem, so as not to hurt the xylem as much as possible, and then peel off this centimeter of bark! Because the nutrients made by the leaves are transported to the roots and the whole body through the sieve tube of the bark, cutting off the sieve tube at this time can provide more results and promote the jujube tree to bear more fruits, and the girdling part will grow up in a short time, because the cambium is not damaged and the distance is very close, and the wound healing function will soon grow well.

When should jujube trees be girdled?

Several technical measures to improve the fruit setting rate of jujube trees;

Coordinate the relationship between jujube growth and fruiting, and improve the fruit setting rate.

After the jujube tree germinates, except the extension branches and fruiting branches, the new jujube tree heads sprouting between the main lateral branches and fruiting branches at all levels should be eradicated from the base to preserve the nutrients of the tree.

Core-taking: Core-taking is carried out at the position of 20-30 cm for upright new jujube shoots without gaps, and core-taking is also carried out from the upper part of jujube head when the new jujube shoots with growth gaps grow to about 20 cm. When the regenerated jujube head grows to more than 50 cm, the second pit removal is carried out to control the vigorous growth and reduce the consumption of nutrients.

Thinning and pulling branches will thin out the over-dense young branches, cross branches, pests and diseases branches, main branches, etc., which will affect ventilation and light transmission, and will pull the upright jujube head into a horizontal shape.

Ring stripping (nail-opening) is an important technology to prevent flower and fruit falling before flowering or fruit falling peak after flowering. Experiments show that the most suitable girdling period is when the flowering amount of hanging jujube accounts for 30% of the bud. Preliminary girdling of trees, girdling mouth should be 30cm from the ground, trunk should be selected in a flat place. First, scrape off the old bark of the trunk with a width of about 1cm to expose the pink cortex, and then cut the xylem with a circular knife with a width of 0.3-0.5cm, without damaging the xylem, and completely remove the phloem. The entire girdling width is required to be consistent, flat and stubble-free. The width of girdling is generally determined according to the age of the tree, the strength of the tree and the rainfall. Generally, the girdling width of small trees is 0.6 cm, that of big trees is 0.4 cm, that of strong trees is 0.5 cm and that of weak trees is 0.3 cm. It is forbidden to girdle trees that are too weak. In case of dry and rainy weather, it can be appropriately widened by 0. 1 ~ 0.2 cm. The waist band must be coated with medicine to prevent pests and diseases. After girdling for 20 days, the fruit set was basically firm. In order to promote the healing of girdling, the girdling can be leveled with mud and healed in 7 ~ 8 days. Plastic sheets can also be used to protect wounds and promote wound healing.

3. Spraying plant hormones and releasing bees in jujube orchard can improve the fruit setting rate.

Spraying plant hormones, plant hormones and trace elements has a good effect on flowering and fruit setting of jujube trees. Plant hormones that can be applied to jujube trees mainly include gibberellin (92O), 2,4-D and naphthylacetic acid. (1) Gibberellin can not only promote the germination of jujube pollen, but also make unpollinated jujube flowers bear fruit. All open flowers can set fruit without pollination after being treated with drugs, which has become an important measure to increase production and stabilize fruit setting. Generally, spraying gibberellin solution with the concentration of 0.00 1% ~ 0.005438+05% 1 time when 5 ~ 8 flowers bloom. It can also be mixed with 0.3% urea solution and 0.2% ~ 0.3% borax solution for topdressing outside the roots. ② Low concentration of 2,4-D has the effect of * * * jujube blossom and fruit bearing. When the concentration exceeds 0.008%, it will cause phytotoxicity to branches and leaves, so the application should be cautious. Generally, 0.0005% ~ 0.00 10% liquid medicine should be sprayed at flowering stage.

Generally speaking, it is more appropriate to put a box of bees in a jujube garden of 8 ~ 10 mu.

In addition, it is necessary to strengthen the prevention and control of jujube pests and diseases. The key is to pay attention to the prevention and treatment of dormancy, flowering, young fruit, fruit expansion and near maturity. During the whole growth period, pests and diseases should be completely eliminated to ensure the vigorous growth of trees. Diseases can be controlled by carbendazim and Bordeaux mixture, and pests can be controlled by 3 ~ 5 Baume-sulfur mixture, 2.5% deltamethrin 2000 times solution, trichlorfon 1000 times solution, chlorfenapyr and other chemicals.

Can jujube trees be cut around in winter?

Jujube trees can't be cut everywhere in winter, so they need suitable conditions for peeling and regeneration. For example, the branches and leaves of trees must be lush and grow vigorously; The peeling time should be in the vigorous period of cambium activity. After peeling, the relative humidity of the air should be kept above 80%, and the correct peeling method should be adopted so that the immature xylem cells on the surface of the trunk are not damaged or less damaged.

Circumcision at flowering stage. It can be carried out from early flowering to full flowering. Choose a sunny and windless day, and choose a place with a smooth trunk and no thorns 30 cm from the ground. First, use a sharp knife to remove a circle of old bark with a width of about 1.5 cm, and then use a sharp knife to remove a circle of small trees with a width of about 0.3 ~ 0.6 cm where the old bark is removed. When the nail is opened again in the second year, it is 5 cm above the nail opening in the first year. 5 ~ 8-year-old trees, strong trees and trees in full fruit period should be selected for opening armour. After circumcision, the wound should be bandaged with plastic film to prevent wound infection and strengthen the management of fertilizer and water.

The first girdling day should be June 6th and the second girdling day should be July 6th. Limited by natural environment, weather phenomena and other factors, the girdling day is increased by three days (1 week) to form girdling week, the first girdling week is from June 3 to 9, and the second girdling week is from July 3 to 9. Thus, the law of jujube harvesting is obtained:

June 3 ~ 9 is the best time for jujube trees to open their nails. Abbreviation: Law of 66

July 3 ~ 9 is the best time to improve the quality of jujube. Abbreviation: 76 method

66 Law +76 Law are two excellent periods for jujube trees to save energy and increase income to the maximum extent.

The law of jujube harvest determines the core time of jujube harvest. Following the law of jujube harvest can activate the scientific pulse of modern orchard management and enhance the yield, quality, chromaticity and natural taste of jujube to the highest limit. Reduce the energy consumption and pest rate of trees to a minimum.