How to promote the rapid aging of new shoots of tangerine?

Root rot. If the root surface of the representative tree is black on the surface, it is mostly root rot. Root irrigation can be carried out with 70% thiophanate-methyl, or 60% Duofu, or 70% Fu-methyl sulfur wettable powder 800 times, once every 15 days, and 2 times in a row, to protect the root system and restore the plant's strength.

Root-knot nematodes are the pest. In the multiple spraying of the corresponding foliar fertilizer, or spraying a variety of trace elements containing a variety of foliar fertilizer (with 60 ml of Nongfeng Brassinolide to 120 kg of water, and in the above 60 kg of Nongfeng Brassinin dilution add 120 ml of humic acid Kang Bao or Nongfu Kang and other foliar fertilizer, spray 1 time every 10 days, 3-4 times in a row. After improving the stress resistance of plants with agropin brassinolide, quickly supplementing the essential nutrients of the tree with high-quality foliar fertilizer, and increasing the synthesis of photosynthetic products), if the situation does not improve, then the root-knot nematode is investigated (for example, when a representative number of trees are selected, and brown particles the size of mung beans are found to be attached to the absorbing roots, the root-knot nematode is the pest).

The soil can be peeled up in the range of 25 cm inside and outside the drip line of the canopy, and the roots can be drenched with avermectin emulsifiable concentrate 3500 times liquid on the tree tray, and the liquid can penetrate into the topsoil to a depth of about 30 cm or more, so as to poison the root-knot nematode. At the same time, it can also poison termites and other underground root-eating pests. <>

Citrus fruit trees generally go through a canopy expansion process of about three years, and do not need to be pruned, unless the new shoots are extracted and have long branches, diseased branches, weak branches, disturbed branches, etc. However, after each shoot is fully mature, the top bud can be plucked, so that each basal branch can extract 2-3 new shoots (to remove the weak shoots with poor orientation and too much). Another:

Foliar spraying on newly planted fruit trees is generally to start spraying foliar fertilizer with pest control when the new shoots are about 1-2 cm long, and then spray the second time when the new leaves are not thickened, and then spray the third time when they are about to mature. Autumn shoots have been mature, if you can control the plant does not draw winter shoots, after a long period of nutrient accumulation, next year's spring shoots can generally be more neat, should not be carried out on the fruiting mother branch stubbing, but pay attention to the timely, and according to the tree situation before the germination fertilizer, mainly nitrogen and phosphorus, nitrogen, phosphorus accounted for about 20 and 40 of the total amount of the year, potassium accounted for 20. <

Use more potassium fertilizer, potassium can not only promote the expansion of citrus fruits, but also accelerate the aging of citrus branches, you can use powder potassium dihydrogen phosphate.

Potassium dihydrogen phosphate is the most selected foliar fertilizer on the market, and it is recommended to use potassium dihydrogen phosphate, but the selection of potassium dihydrogen phosphate also has certain skills. The market is divided into powder and crystal, to choose powder, better soluble than crystal, high absorption and utilization rate. Choose hormone-free potassium dihydrogen phosphate, which will not cause hormonal growth to the crop.

Apply fast-acting water fertilizer 15 days before spring shoot germination to promote the good growth of spring shoots, and the fertilizer can also be applied twice before and after shoots. Before and after the summer heat, that is, about 15 days before the budding of autumn shoots, water-soluble fertilizer was applied once to promote the growth of autumn shoots and healthy oysters. Around October, the fruit enters the peak period of enlargement, and the tree body begins to enter the physiological differentiation period of flower buds, and a high-quality fertilizer is applied to facilitate the differentiation of strong fruits and flower buds.

In addition to the above several fertilizations, in the full flowering period or flowering period to see the age, tree potential, flowering amount and leaf color, etc., appropriate application of flowering fertilizer.

For example, trees with light leaf color and many flowers can be applied with high-nitrogen water-soluble fertilizer once; The tree is vigorous, the leaf color is dark green, or the flowers are few, so as not to overgrow the summer shoots and cause fruit drop. 5 June is the stage of young fruit development, such as more fruits, light leaf color, buds are not full, can be applied a banquet water-soluble fertilizer. For citrus planted in high dry land or with older trees, summer shoots are the fruiting mother branches of the following year, and a water-soluble fertilizer should be applied to promote the growth of summer shoots.

Ethephon solution can be sprayed to make sugar oranges ripen early. Ethephon is sprayed once every 15 days, generally sprayed 1 2 times, and foliar fertilizer can increase the number of sprays. The use of exogenous hormones, i.e. ethylene in plant growth regulators or substances that produce ethylene, moderately regulates the ripening of fruits.

It is also possible to prepare in other sugar orange required conditions:

1. Sufficient fertilizer and water**.

First of all, it is necessary to ensure that sugar oranges have sufficient fertilizer, and we need to pay attention to the reasonable application of nitrogen fertilizer, water and trace elements, so that the fruit trees have sufficient nutrients to grow, so that they can mature early.

2. Temperature. For example, sugar oranges in Guangxi are late-maturing varieties, and the main reason is that the temperature is too low in winter and the light is reduced, which leads to the hindrance of photosynthesis and the difficulty of turning color on the peel, so it matures late. Therefore, if you want to let it change color in advance, you can solve it by changing the temperature of the cover film.

When the temperature is low in winter, the film is covered, so that the temperature in the film is higher, which meets the requirements of fruit coloring, thereby promoting early ripening, and generally only needs to cover the film for about half a month. However, the cover film also requires a cost, and not all can be covered with the film, and the cover film is generally changed when it is almost ripe, and at the same time, it can also prevent frost damage.

If you want to ensure the quality of sugar oranges, under normal circumstances, the fruits of sugar oranges must go through a certain period of time, light accumulation, and the transformation of temperature, carbohydrates and mineral elements to achieve the quality and flavor of the original varieties. However, if you want to accelerate its maturity, especially if the appearance seems to be mature but the quality declines, this is some misunderstandings in current production. Of course, if through scientific means, without changing the quality of sugar oranges, similar to the cultivation of out of season, this technology is worthy of appreciation.

Theoretically, increasing the light time of the fruit and increasing the addition of nutrients outside the roots may lead to a slight advance in the ripening time.

When the sand tangerine entered the second physiological fruit drop stage in July, and the summer shoots began to draw rapidly, the red and rusty spiders were harmed, and the citrus anthracnose occurred, and the main work was to protect the fruit, kill the summer shoots and spray pesticides to prevent diseases and pests. Spraying to preserve the fruit. Spray 1 time citrus grapefruit plastin.

Control and kill Xia Shao to protect the fruit. Pay attention to control the pumping of summer shoots, you can spray a new type of citrus summer shoots when about 3 cm of summer shoots, and when using the agent, pay attention to spraying after 4 pm in sunny days and high temperature weather. Circumcision to preserve the fruit.

Vigorous trees or trees with less fruiting or well-managed orchards can be circumcised to preserve the fruit. Spraying to prevent citrus anthracnose. Trees are weak, shady orchards should pay attention to spraying before and after rain to prevent diseases.

Spray 500 times of 30 grams of fungus or 1200 times of 70 Fucun, or 800 1000 times of 70 methyl tobuzin. Spraying pesticides to kill mites to control red and rust spiders. In the new orchard, new shoots should be cultivated, and it should be noted that leaf miner moths damage new leaves, and spray pesticides in time to protect branches and leaves when new shoots are extracted.

Generally, it is 920 fruit control shoots, spray a 200 grams of a pack of the kind of paclobutrazol produced by Sichuan Guoguang after the flowering, each package is equipped with 100 catties of water to spray the whole plant, as long as there is no rain for three days, keep you to the near beginning of autumn when you only pick the buds once and don't care.

Now I want a potion to protect the fruit, so it's too early to control it.

Sugar orange is a common fruit in daily life, and it is loved by people because of its juicy, fleshy and rich in vitamin C. What's more, in order to make it easier to pick, I planted sugar oranges at home, so what fertilizer can I use to make sugar oranges ripen early? How do sugar tangerines red early?

Let's take a look.

Sand tangerine is a kind of fruit that we often eat, its shape is oblate, there is a nodulous bulge at the top, the color is orange or orange red, the peel is thin, very easy to peel, so it is popular with many people. If you want to make it grow better in the process of planting, you must fertilize it reasonably. Spring fertilizer, flowering and fruit preservation fertilizer and autumn fertilizer should be reasonably applied to the tangerine during the whole growth process.

Sand tangerines are the fruits we often eat, and they are popular with many people because of their small size, sweet and juicy taste, and easy to peel. Generally speaking, acidic soil, alkaline soil, and neutral soil can grow, but the most suitable soil pH value is. In the process of planting sugar oranges, it is more conducive to the coloring of the peel by applying nitrogen fertilizer to it reasonably.

At present, there are many varieties of sugar oranges on the market, but my favorite is the golden autumn sugar sugar, this variety is generally about two months earlier than the ordinary sugar orange, compared to other varieties this variety is slightly competitive, but the search is not cheap, a small seedling costs fifty or sixty yuan.

1. Select the appropriate autumn shoot release period according to the climate and topographic characteristics of various places, select the appropriate shoot release period, and use gibberellin to reduce the possible fruit drop by using gibberellin to remove the ascitic acid formed by the fruit stalk separation. Foliar fertilizer is used to replenish the nutrients needed for the development of the tree and young fruits in a timely manner.

2. Promote the management and application of fertilizer and water in autumn shoots, the purpose is to accelerate the expansion of fruits and promote the neat and robust extraction of autumn shoots. After the shoots are old and ripe, fertilizer is applied again, mainly phosphorus and potassium fertilizer, so that the tree body can accumulate sufficient nutrients and prepare for flowering in the next year. In times of drought, the tree tray should be properly irrigated or watered to promote the timely extraction of autumn shoots.

Fertilization promotes the neat and thick autumn shoots, which is conducive to the expansion of small fruits, reduces fruit cracking, and prevents sunburn.

3. To control the amount of shoots, the crown of young fruiting trees still needs to continue to expand, and the growth potential is still strong. The vegetative growth and reproductive growth of adult fruiting trees reached a relative balance. After the mother branch grows, the new shoots should be topped in time to speed up the aging of the branches.

Wild or. 4. Protect the shoots and leavesIn production practice, it is recommended to release shoots in the low peak period of leaf miner moth damage.