How to make tangerine fruits uniform in size?

To achieve uniform size of citrus fruits, foliar fertilizers or pesticides alone will not achieve the goal. The main role is to try to be as neat as possible when releasing the next autumn shoots, and the strength of the shoots should be as consistent as possible. This is done by fertilizing and pruning the plants about 15 days before the shoots are scheduled to be released.

The second is to leave the shoots appropriately after releasing them, that is, the base branches are strong and the weak branches are left less, so that the growth intensity of the shoots is as consistent as possible.

Third, after the end of the second physiological fruit drop, the fruit should be properly thinned and the fruit should be retained, that is, more strong branches should be left, less weak branches should be left, less at the top, and more should be left in the inner chamber. In order to make the fruit color even, in addition to the above measures, it is necessary to pay attention to the reasonable pruning of the canopy when the autumn shoots are released and the garden is cleared in winter, so as to improve the ventilation and light transmission of the canopy. In addition, increase the application of organic fertilizers and the rational use of drugs for pest control.

Finally, it is necessary to use measures such as foliar fertilizers and plant growth regulators that promote coloring and improve the appearance quality of fruits. For example, at the beginning of the swelling period of the fruit, pay attention to the repeated spraying of calcium, boron, manganese, zinc, magnesium and other trace elements, as well as plant growth regulators such as nongfengsu brassinolide.

1. Pre-storage. After the harvested tangerine fruits are preservatively treated, they are stored for a short time before sorting, which is called pre-storage. Pre-storage has a certain effect on wound healing, diaphoresis (causing the peel to lose part of the water), pre-cooling, etc., so pre-storage is particularly important for wide-skinned orange fruits that are prone to dry water during storage.

The method of pre-storage is simple, the fruit can be placed on a dry, cool, well-ventilated, not exposed to direct sunlight, sterilized by drugs, and covered with clean straw. The height of the fruit is 4-5 fruit height, the general pre-storage time is 3-4 days (7-10 days for wide-skinned oranges), the weightlessness rate of wide-skinned oranges is 3-5%, and the weightlessness rate of sweet oranges is 3-4%.

2. Sorting and packaging.

a. Sorting: The sorting of sugar oranges after picking is very important, especially for the preparation of long-term storage of oranges. Sorting can not only remove rotten fruits, crippled fruits, deformed fruits, diseased and insect fruits, sessile fruits, thick-skinned fruits, and soft-skinned fruits, ensure the quality of fruits, but also make the fruits uniform in size.

First, the appearance is beautiful, improve the value of goods.

b. Put the sorted sugar oranges into a carton or wooden box lined with Baileyuan active fresh-keeping bags, with 15-20 kg as appropriate, and stack them in a zigzag shape. Attention should be paid to ventilation, not dense storage, and the relative humidity in the warehouse should be about 85%. The temperature in the warehouse is 5-8, and the fruit should be checked once in January to prevent the unqualified inferior fruit and insect fruit from being loaded into the unqualified inferior fruit and insect fruit due to work errors before packing, so as not to cause unnecessary rotten fruit.

Normally, it can be stored for more than 3 months to ensure the original nutrients, color, flavor and taste of sugar oranges. The use of Balayuan Active Fresh-keeping Bag can keep it fresh for more than 15-20 days at room temperature (25).

What are the reasons for the small size of sugar orange fruit? How to fertilize the small sugar orange fruit?

Many people think that the sand candy is too small, which must be a lack of nutrients, so they continue to fertilize.

Lack of fertilizer is indeed one reason, but it is not the whole cause. Bury pie.

So what are the reasons why the sugar orange fruit is small? How to fertilize small sugar orange fruits? Let's take everyone to find the answer!

The reason why the sugar orange fruit is small.

1. Root damage: The root system is damaged due to root burning, root rooting, root nematode damage and other reasons, and the roots cannot absorb nutrients and water normally, which affects the expansion of the fruit and causes the fruit to be small.

2. Insufficient nutrients: the amount of fertilizer is too small, the amount of fruit hanging is too large, and the tips are too much, etc., which will cause the nutrient deficiency of the tree body, resulting in small fruits.

3. Insufficient light: insufficient light in the inner branches and the lower part of the canopy, which is prone to the problem of small fruits.

4. Weak branches: In the past, the weak shoots were not removed, and the branches will be weak after they are mature, and the nutrients absorbed and manufactured by the weak branches are difficult to meet the nutrients required for fruit expansion, and the problem of small fruits is prone to occur.

5. Excessive growth: the vegetative growth of the tree is too vigorous, the branches are too dense, the middle shade branches, the branches are too thin, and there are many rainy days in the early stage, the light is insufficient, the photosynthetic efficiency is low, the carbohydrate synthesis is less, and the nutrients of slender branches and weak branches are not enough, resulting in small fruits.

What fertilizer is good for sugar orange fruits?

The fruit is small in orange orchards, which is not suitable for inhibiting winter shoots by saving water, and should keep the soil moist to facilitate nutrient absorption and promote fruit expansion.

Suggested fertilizer: apply fast-acting potassium fertilizer to the root, and spray the leaves at the same time: potassium dihydrogen phosphate + alginic acid or amino acid + brassinolide, spray 2-3 times.

It can improve the phenomenon of small fruits to a certain extent.

So how to prevent the appearance of small fruits? In the first 2 3 periods of fruit growth and development (from the spring shoot stage in March to the rapid expansion period of young fruits in August), the expansion was mainly promoted by absorbing a large amount of nitrogen fertilizer. In the last 1 3 periods of fruit development (mid to late stage of fruit expansion from September to October), a large amount of potassium fertilizer is needed to promote subsequent expansion, accumulate more dry matter, and increase the weight and internal quality of fruit single fruit.

Therefore, through effective fertilization and reasonable regulation of fertilization, the phenomenon of small fruits can be well prevented.

<> want to make sugar oranges reden and sand as soon as possible, you can achieve it by fertilization, and generally choose to fertilize sugar oranges in the morning or afternoon in a cooler time period, it is best to use phosphate fertilizer and potassium fertilizer when fertilizing, and at the same time, you need to provide proper water for the plant after fertilization to help the plant absorb more nutrients.

1. Proper fertilization.

If you want sugar oranges to increase redness and sand as soon as possible, you need to provide appropriate nutrients for the plants. And when fertilizing the plant, you need to choose the correct fertilization time, generally sugar orange grows and matures in the autumn of each year, and the autumn temperature is more suitable, so the fertilization of the plant can be carried out in the morning or afternoon when the plant grows more vigorously.

2. Types of fertilization.

When fertilizing sugar oranges, it is necessary to choose a suitable fertilizer. Generally, sugar oranges have a greater demand for phosphate fertilizer and potassium fertilizer when increasing redness, so it is best to use the old round fertilizer based on phosphate fertilizer and potassium fertilizer when fertilizing sugar oranges, and it can also be appropriately matched with some fertilizers containing zinc, manganese, sulfur and other elements when fertilizing.

3. Fertilization method.

It is also necessary to use the correct fertilization method when fertilizing sugar oranges. Generally, foliar fertilizer can be used when fertilizing plants, that is, the fertilizer is diluted and poured in a watering can, and then sprayed on the leaves of the plant, or the fertilizer can be added directly to the soil, waiting for the soil to absorb and then provided to the plant, so that the plant can absorb enough nutrients.

4. Later maintenance.

In the later stage of the maintenance of sugar oranges, it is necessary to provide appropriate water for the plants, soak all the soil, so that the plants can grow more vigorously, and also need to provide suitable light for the plants, so that the plants can carry out photosynthesis normally, and pay attention to the light intensity when providing light for the plants, so as not to burn the plants with too strong light.

Sugar oranges are also natural fruits and do not have starch on the surface.

In its natural state, there is a layer of pectin on the surface, which protects it from evaporating too quickly and avoiding bacterial infestation.

After picking, the general Xulu will be cleaned and waxed, which is cleaner, better looking, and keeps for a long time.

But there will be no starch. Starch has no effect on insurance and preservative, and Wu Pei will not add it.

Sand sugar oranges are cultivated with moderate autumn shoots and correctly fertilized with thin peels.

1. Cultivate the mediocre autumn shoots

If you want to thin the skin and sand, you should start from the autumn shoots, cultivate the mean, weak autumn shoots in the coming year, the fruit size is moderate, not easy to rough skin, if the autumn shoots are too prosperous, the fruit will be easy to be large, the peel is thick, and the floating skin in the maturity period.

Cultivating the mediocre autumn shoots, mainly from fertilization to control the strength of the branches, combined with the thinning shoots to stay strong and weak, such as the first time to hang fruit trees in the coming year, the autumn shoots are too strong can be twisted or pulled to weaken the tree potential.

2. Correct fertilization

If there is too much nitrogen fertilizer, the tree will be too vigorous, and the tree will be prosperous and the peel will be thicker, so the amount of nitrogen fertilizer should be controlled. Before the autumn shoots are put and during the autumn shoots growth period, the amount of nitrogen fertilizer will be properly controlled, so that the autumn shoots will not be too vigorous.

Fertilizer + potassium fertilizer containing high organic quality is applied during the fruit expansion period, phosphorus and potassium fertilizer are supplemented during the veraison period, phosphorus has the effect of coloring and promoting ripening, potassium has the effect of deacidification, sweetening and coloring, the peel becomes thinner, and when the sugar accumulates to a certain extent, it will naturally sand up.

Trim properly. Pruning can improve the problem of wind and light transmission of the tree, which is conducive to fruit expansion, color and sweetening, and natural sand when the sugar accumulates to a certain extent.

Pruning is mainly in two stages, autumn pruning and winter pruning, that is, before putting autumn shoots and after picking, the branches with serious pests and diseases are cut off, the over-dense branches are cut off, and the middle part of the crown is cut off the upright branches.

<> the reasons for the thick skin of the fruit of the tangerine are as follows: the abnormal weather such as "cold spring" encountered in the flower bud differentiation stage and flowering stage, which caused the flowers to fail to develop normally and hindered the nutrient delivery; The variety of sugar orange itself has the characteristic of thick peel; Sugar oranges lack nitrogen fertilizer, phosphate fertilizer, boron, zinc, copper and other trace elements; The concentration of gibberellin agents is too large, and the skin of the sugar orange is thick.