How to circumferentially cut sugar oranges to promote flowers and fruits?

The young trees of sugar orange grow vigorously, especially in the paddy fields at the end of the pit and the mountain orchards that have been deeply ploughed and reformed, and the leaves of the plants are dark green in winter, and they are easy to extract winter shoots. In terms of production, circumcision from late November to mid-to-late December can control winter shoots and increase the accumulation of carbohydrates in autumn shoots, thereby promoting flower bud differentiation. Circumcision method:

You can use a special circumferential cutter, electrician's knife or other sharp knives to make a circumferential cut on the main branch, and the circumferential cutting depth is subject to the depth of the circumference that does not hurt the xylem. If circumcision is carried out on the main trunk, it should be carried out at a distance of more than 20 cm from the ground to avoid infection and decay of the circumcision wound. In addition to circumcision, the main branch or trunk can also be tied with 16 iron wire to temporarily interrupt the downflow of nutrients from the crown and promote the differentiation of flower buds.

Circumferential cutting and tying of wire are only suitable for the vigorous and vigorous trees, and the general methods of water production and root cutting fail to effectively promote the flowering of the plants, which will be counterproductive to the old and weak trees. Plants with circumferential cutting and wire should be fertilized during the spring shoot growth period, otherwise the recovery of tree vigor will be affected. Top dressing outside the roots, the first production tree of sand sugar orange, not only reasonable fertilization, but also to control the summer shoots, if too much fertilization, it is not conducive to flower and fruit preservation; If the amount of fertilizer is too small, it is not good for the growth of small fruits.

Therefore, extra-root topdressing is a reasonable method to supplement the fertilizer required for fruit development. There are many types of extra-root top dressing (also known as foliar fertilizer), including compound fertilizers (such as various multi-compound fertilizers, potassium dihydrogen phosphate, etc.), bacterial fertilizers (such as biological potassium, rhizobia, etc.), humus fertilizers (such as humates), rare earths, etc. At present, there are many varieties of foliar fertilizer in the market, which should be used with caution, and the source, category and method of use must be clarified when using, and it is best to try before use.

Thinning and controlling shoots, thinning refers to the method of manual removal of sand sugar oranges after budding and flowering, and removing quite a lot of nutritious spring shoots and fruitless vegetative branches that have fallen flowers, so as to reduce the waste of nutrients in the tree when spring shoots elongate and turn green. It is not advisable to pick all the treetops, and leave a small amount for a certain time to put the autumn tops. Shoot control refers to the technical measures to reduce nutrient consumption and effectively prevent fruit drop by manually wiping the summer shoots extracted from the fruiting tree during the physiological fruit drop period from mid-May to late June.

In the shoot control work, if the labor force is sufficient and the fertilizer and water conditions are good, you can consider putting 1 summer shoot. Shoot placement should be carried out from late June to early July. If it is placed early, it will affect the fruit drop; If it is put late, it will affect the extraction of autumn shoots.

During the summer shoot season, it is necessary to increase the application of fertilizer and water and strengthen the prevention and control of new shoot diseases and insect pests. It has been observed that placing summer shoots once, especially on plants that bear fruit for the first time, is conducive to the protection of fruits from sunburn and the extraction of strong autumn shoots.

Shake the flowers regularly, in South China, there is more rain in early spring, and often the petals and filaments of the sugar orange after flowering adhere to the small fruit, affecting the photosynthesis of the small fruit. By regularly shaking the flowers, increasing the light exposure of small fruits and reducing the breeding of pests and diseases, the three-dimensional fruiting of orchards can be promoted. Shaking flowers generally starts from full bloom, shakes flowers once every 5-7 days, and the fruit preservation effect is very good.

Circumcision to preserve fruits, trees that have just been put into production generally grow more vegetatively, and need to be circumcised to preserve fruits and fruits. The circumcision time depends on the amount of fruit, if the amount of flowers is not much, it should be circumcised at the full flowering period; If the amount of flowers is large, it should be circumcised after the flowers fall. Circumcision temporarily blocks the transport of organic matter from the tree to the root system, increases the nutrition of small fruits, and can play a role in protecting fruits.

However, when entering the second physiological fruit drop, the callus after circumcision has returned to normal, and the effect of preventing the downward transport of organic matter has been significantly weakened, so the more vigorous trees should be circumcised again from late May to early June. However, whether further circumcision is needed should be flexibly grasped depending on the fruit-bearing situation of the body. If the small fruits of the plant turn green normally in mid to late May, and there are many hanging fruits, there is no need for secondary circumcision.

There are many types of plant growth regulators used in fruit preservation and fruit strengthening, such as ninety-2O, 2,4-d, brassinolide, etc. In production, we must be cautious and careful, and understand the origin and use method before use. Sand sugar orange fruit preservation can be sprayed with 92010-50 ml liters after flowering, once every 7-10 days, a total of 2-3 times.

In addition, after the new shoots are ripe, you can use 2,4-d10-30 ml of fruit preservation and spray it twice. The effect of borax and magnesium sulfate or compound fertilizer solution added when spraying is better. Pest control, timely prevention and control of pests and diseases is an important measure to protect flowers and fruits of sugar oranges, if there is negligence, it will cause serious fruit drop and the generation of residual fruits.

During the fruit development period, the prevention and control of spider spiders, cankers, anthrax, etc. should be strengthened. <>

There are four ways to promote flowering with fruit sugar oranges, the first is to change the fruit for the shoots, that is, to properly thin the fruit for the plant, so that the plant has more nutrients to grow new branches, the second is to put the shoots in advance, that is, to cut off the branches grown by the plant properly, the third is to provide fertilizer, it is best to provide phosphorus and potassium fertilizer for the plant, and the fourth is to supplement the nutrition of the rough file, that is, to use the red library agent to the plant.

1. Swap fruit for tip

Hanging fruit granulated sugar oranges to promote flowering can be done by exchanging fruits for shoots. First of all, you need to prepare a pair of scissors with a sharp edge, and then use scissors to cut off the fruits that grow too densely on the plant to help the plant save nutrients, so that the plant has more nutrients for growing side branches. At the same time, after pruning, it is necessary to apply carbendazim solution to the pruning wound of the plant so that the wound of the plant can heal as soon as possible.

2. Put the tips in advance

Hanging fruit granulated sugar orange to promote flowering can also be achieved by putting the tips in advance, that is, using sharp scissors to cut off the branches and leaves that are not growing badly or cannot grow normally, to help the plant save nutrients, and can also cut off the branches and leaves that are too dense to promote the plant to store enough nutrients for flowering.

3. Provide fertilizer

If you want to promote flowering, you can provide reasonable nutrients for the plant. Generally, plants have a greater demand for phosphate and potassium fertilizers during flowering, so if you want plants to bloom as soon as possible, you need to provide an appropriate amount of phosphorus and potassium fertilizer for plants to promote flower bud differentiation. And it is best to use diluted fertilizer when fertilizing to avoid fertilizer damage to plants.

4. Supplement nutrition

If you want to make the sugar orange flower, you can also provide the plant with appropriate nutrients, this method is the same as fertilization, in order to supplement the plant with appropriate phosphorus, potassium and other elements. The general use of nutrients is the red library solution, and it is best to dilute the agent when using this agent.

1. How to circumferentially cut sand sugar oranges?

The circumcision knife is used to circumcision two-thirds of the main trunk of the fruit tree, and the wound of circumcision can usually be healed in about 15 days. Fruit trees that require a second circumcision are circumcised after the wound has healed completely. The width of the circumcision is usually 2 mm, and the circumcision width of the sturdy tangerine tree is 3 to 4 mm.

According to the overall growth, it is judged whether to perform a second key tremor circumcision.

2. When is the sand tangerine circumcised?

The environmental time of sand tangerine is circumcised during the physiological fruit drop period, about 11 December, depending on the flower and fruit drop of the fruit tree. Some trees have less flowers and can be circumcised twice, once at the end of flowering and a second at physiological fruit drop. If the bark is partially cut off after circumcision, the growth of the tree is temporarily restricted, and the extraction of fruit shoots can be suppressed.

3. Do sugar tangerines have to be circumcised?

Sugar orange relies on the roots to absorb water and nutrients, through the xylem to the aboveground part, the leaves through photosynthesis, the formation of organic matter through the bark (phloem) to the roots, through the ring cutting to weaken the vegetative growth of sugar oranges, phloem damage to block the bright and bright photosynthetic products transport to the roots, so as to concentrate the flower buds to differentiate and help fruit set. Therefore, it is recommended that sugar oranges be circumcised during the production process.

Fourth, sand sugar orange sand sugar orange precautions.

Sterilize the circumciser beforehand. The circumcision should be avoided too early, otherwise it will cause the growth of the tree to weaken, resulting in the appearance of large and small years, and it will be difficult for the spring shoots to turn green. Avoid circumflopping as circumcision.

Do not perform a second circumcision while the wound of the first circumcision has not healed. The growth of fruit trees is different, and it is also necessary to decide whether it needs to be circumcised according to the daily growth conditions, and weak and diseased trees do not need to be circumcised, otherwise it will further weaken the growth of fruit trees.

It is necessary to adhere to the principle that the corresponding flowering promotion work should be done according to the physiological principles of plants, and it is important not to generalize about all trees. For trees with strong potential to promote flowering, such as short drought period and short frost period, measures such as bending branches, hoeing roots or circumferential cutting can be done in time, but special attention should be paid to weather changes and work in time. Generally, it can be done between mid-December and the end of January.

The purpose of this stage is to make the leaf color slightly yellow when it is cold. For trees with slightly yellowing waxy leaves during the cold season, there is no need to spray any anthers before flowering. Due to too much control, the amount of flowers is too large, which can be solved by spraying a strong mosaic fertilizer after flowering.

For trees with many fruits and late fruit picking, high-efficiency soluble compound fertilizer should be applied before and after fruit picking or before rain, and high-quality foliar fertilizer with high phosphorus, high potassium and amino acids should be sprayed many times to promote the formation of flowers. For paddy fields or shallow orchards with roots, the roots should be broken after fruit picking or in December, and the soil around the canopy should be hoeed off with a hoe. Young and strong trees can be hoeed 4-5 inches deep, and middle-aged fruit trees should be hoeed shallowly.

It is necessary to hoe off part of the surface root system and dry it until the leaf color is slightly green.

Root nodule removal is also a relatively safe method of flower promotion, and the effect will be better if combined with waterlogging control. Curved and twisted branches are more likely to erect strong branches in young fruit trees, especially early vigorous fruit trees. In order for these branches to blossom and bear fruit, in addition to circumcision, bending and twisting branches are performed.

The practice is to use a straw rope or a plastic bag to bend the long branches when the autumn shoots are ripe, and the leaf color in the bag fades from dark green to light green, which can be untied, and twist the branches by hand from the base of the branches, injuring the cortex and xylem, and the leaf color becomes light green.

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To choose fertile soil, pay attention to planting density during the planting process, to ensure light time and temperature, to choose full and healthy seeds, but also to water and fertilize in time, to prune branches and leaves regularly, to pay attention to ventilation, temperature to control between 20 degrees and 25 degrees. Pay attention to the climate and soil.

You can choose to use some related drugs to promote flowering, or you can choose to cut off the soil roots on the four sides of the crown to promote flowering, you can use circumferential cutting technology to promote flowering, you can also use ring iron wire to promote flowering, and bend branches and twist branches to promote flowering.

It can be used to promote flowering by circumcision, and pesticides can also be sprayed so that the root system can obtain enough nutrients to promote flowering in this way.

The technology of sand sugar orange to promote flower and fruit preservation has been plaguing the majority of orange farmers. At present, it has become a trend to use circumferential cutting to solve this problem, but many orange farmers ignore field management before and after circumferential cutting, which has caused great harm to the normal growth and development of the tree, shortened the life span of fruit bearing, and stagnant yield, so the use of circumferential cutting technology must be cautious.

First, we must first strengthen the management of water and fertilizer.

The prerequisite for taking circumferential cutting to control shoots to promote flowering should be carried out under the condition that fertilizer and water management are good and the plants are vigorous. If the orange tree is circumferentially cut in a particularly weak tree, when it encounters drought or colder temperatures, the plant will be prone to defoliation, and if the defoliation is severe, it will affect the photosynthetic efficiency of the functional leaves, thus affecting the flowering or flower quality and fruit setting rate. Therefore, water and fertilizer management must keep up with the whole growing season of sugar tangerines to strengthen the tree's potential.

Second, the correct use of circumcision technology.

The traditional tough measures such as ring stripping, killing and root cutting are used to inhibit the crazy growth of branches, keep flowers and fruits, and cause great damage to the tree potential, which is easy to shorten the age of the tree. The correct way is to use a blunt knife blade to circumferentially cut the smooth trunk of the tangerine from November to early December, reaching deep into the xylem, and then apply foliar fertilizer to enter the tree to activate the anion in the body, so that the vegetative growth of the tangerine can be transformed into reproductive growth, control the crazy growth of branches, and strengthen the flowering genes and flower ovary. According to the growth status of the tangerine, the long tree is used again every 10-15 days, and the young tree is used again every 25-30 days.

3. Spray foliar fertilizer to increase tree nutrition.

For the yellowing of leaf color or abnormal defoliation after circumcision, the tree disc should be moderately watered, and the crown should be sprayed with phosphorus and potassium-based foliar fertilizer, such as Banedabica potassium dihydrogen phosphate or foliar fertilizer, and "new high lipid film" should be added to increase the nutrients of the tree and improve the stress resistance of the plant. The "new high-lipid film" has a better effect than the general high-lipid film, and the effect can be increased by 4-5 times. Non-toxic and non-polluting, stable physical and chemical properties, not chemical fertilizers or pesticides, plant protection surface protectors.

Fourth, spraying to promote flowers and fruits.

Before flowering, young fruit stage, and fruit expansion stage, "melon and fruit strong tiling" was sprayed to increase the amount of nutrients transported, protect flowers and fruits, and strengthen the tree potential. By spraying "melon and fruit strong tiling", the delivery of nutrients is greatly increased, and the fruit is expanded and vigorous, colored, efficient, safe, and free.

In the whole growth process of sugar oranges, it is necessary to strengthen field management, reasonable fertilization, timely spraying, increase nutrition, strengthen tree potential, adopt scientific ring cutting technology to protect flowers and fruits, improve fruit quality, and increase the income of orange farmers.