Two years of sand sugar orange fertilizer damage, what fertilizer to use sand sugar oranges

Hello, can you be in more detail? According to this kind of question, there are several possible ones: First, what kind of pesticide did you use? For example, if you don't wash the nozzle after weeding, you can see if you have this symptom in the leaves of a tree that doesn't sprout, and it can happen all year round, spring, summer, and autumn.

There are three types of yellowing of new shoot leaves. That is, uniform yellowing, mottled yellowing and element-deficient yellowing. The spring shoots of young trees and early fruiting trees are sick, and the new shoots begin to turn green after turning green, so that the new leaves of the whole plant are uniformly yellowed, while the summer and autumn shoots are the new shoots and leaves appear light yellow and dull in the process of turning green, and gradually yellowing evenly.

Adult trees put into production, often in the whole citrus orchard, there are a few branches in the crown of individual or part of the plant on the new shoot leaves yellowing, farmers call "chicken head yellow" or "golden flower". In the following year, the yellowing branch expanded to the whole plant, causing the tree to decline. Some of the new leaves in the diseased plants begin to fade green and yellow from the base of the leaves, near the veins or at the edges, and gradually expand into yellow-green mottled yellowing.

It can occur at the same time as uniform yellowing. Mottled yellowing can also be transformed into uniform yellowing. The new shoots on these yellowing branches, or the new shoots extracted after cutting the yellowing branches, have short branches, small and hard leaves, and show zinc deficiency and manganese deficiency of flowers and leaves.

The fruit is small or deformed, unevenly colored, oranges often show "red shoulder" fruits, and oranges show "green fruits" with green and dull skin. And the third is nutritional deficiencies, which are analogous to nitrogen, phosphorus, potassium, or zinc deficiency, and it's better if you go into more detail so that it's easier to solve, or take a look at the picture above.

Fertilization of <> young trees: frequent and thin application, mainly nitrogen fertilizer, combined with phosphorus and potassium fertilizer, and appropriate supplementation of zinc fertilizer. Adult tree bud before the argument slag fertilization:

Nitrogen and phosphorus fertilizers are the main fertilizers, and the amount of nitrogen fertilizer can be reduced for trees with few fruits and strong trees in the previous year. Fertilization of flowers and fruits: generally nitrogen fertilizer + farmhouse fertilizer is the main stove.

Fertilization of strong fruits and shoots: It should be mainly based on organic fertilizer and chemical fertilizer. Overwintering fertilization after fruit picking:

It is mainly based on farmhouse organic fertilizer, which can be combined with compound fertilizer and bacterial fertilizer.

That is, 30 grams of urea are applied each time, and 85 grams of 15: 15:15 ternary compound fertilizer are added to the water or mixed with decaying thin manure water and applied to the root of the crown drip line. The amount of fertilizer applied in the second year is a multiple of the amount of fertilizer applied in the first year, and 30 grams of potassium sulfate per plant are added at each time of fertilization.

In the trial production period of the third year, the amount of fertilizer is twice the amount of fertilizer in the second year, and 50 grams of potassium sulfate are added to each plant in each fertilization, and about 10 kg of rotten chicken manure is added to each plant in winter fertilizer.

The first year after planting, the sugar orange tree, mainly to expand the canopy, because the differences and growth of the seedlings are not very different, so there is no need to prune and wipe the buds to control the shoots, and to the second and subsequent shoots of the extraction, should be wiped buds, to the whole garden bud extraction rate of more than 70%, that is, to let the buds be extracted and unified shoots.

And about 15 to 20 days before the shoots are applied, mainly nitrogen fertilizer, with an appropriate amount of phosphorus and potassium. When there are 4 5 leaflets in the new shoots, apply the second fertilizer, apply the third fertilizer when the new shoots stop growing and begin to turn dark green, and the sugar oranges planted in the year are generally extracted 3 times, and the total fertilizer amount of the annual plant application (reference) is: 5:

15: 15 ternary compound fertilizer is about kilograms, urea is about kilograms.

After that, the amount of fertilizer applied each year is set according to the amount of fruit set. In addition, in each shoot stage, combined with the spraying of pesticide to prevent diseases and pests, 500 times of gold Lvxing amino acid liquid fertilizer can be added, which has considerable benefits for improving the quality of young tree tops and leaves and the stress resistance of the tree.

Starting from the second year of planting, you can reduce the number of fertilization, increase the amount of manure and fertilizer each time, 30 kg of manure and about 3 taels of urea each time.

By September, the application of nitrogen fertilizer and manure was stopped, and potassium fertilizer was applied once, and half a kilogram of potassium chloride was applied to each plant to promote flower bud differentiation. At the same time, attention should be paid to soil moisture management.

Fertilization of young fruiting trees is divided into three parts:

1. Stable fruit fertilizer: 50 kg of manure water per plant, or half a kg of compound fertilizer and urea.

2. Strong fruit fertilizer: nitrogen, phosphorus and potassium are applied together, each plant uses 1 kg of compound fertilizer, and half a kg of urea potassium fertilizer.

3. Fruit fertilizer: 50-100 kg of decomposed manure water should be applied to each plant. Every year, after the autumn shoots are old and mature, they begin to control water and fertilizer, control winter shoots, and promote the differentiation of flower buds.

There are half a year of sugar orange drip irrigation fertilizer 1,000 catties of water and how many catties of compound fertilizer.

Yes, fertilization principle:

The needs of blood orange for various nutrients should be fully satisfied, and more organic fertilizer and rational application of inorganic fertilizer and formula fertilizer should be advocated. Fertilization was guided according to the results of leaf analysis, orchard soil analysis, and phenological period of blood orange. Soil fertilization is the main method, combined with foliar fertilization.

Methods such as annular furrow application, strip furrow application, hole application and soil surface fertilization are adopted.

Frequent application of thin application, mainly nitrogen fertilizer, with the application of phosphorus and potassium fertilizer, 5-6 times of fertilization in spring, summer and autumn shoot extraction period, each time each plant is applied ammonium carbide or urea catty. Adult trees should be fertilized four times, namely germination fertilizer, fruit preservation fertilizer, fruit strengthening fertilizer, and fruit picking fertilizer.

The fertilizer applied after the growth of the upper shoots has stopped and before the root system begins to be active in the second year is called basal fertilizer. It is advisable to apply basal fertilizer in autumn, from early September to mid-October. That is, the second peak of the growth of the root system is applied.

Before the end of the growing season, the temperature is suitable, the temperature difference between day and night is large, the light is sufficient, the photosynthetic efficiency is high, the new organs in the shoots have stopped growing, and the nutrients produced at this time are mainly accumulated, and fertilization at this time is conducive to improving the nutritional level of the tree, is conducive to the differentiation of flower buds, and enhances the frost resistance of the tree. The application of basal fertilizer in autumn can also slow down the growth potential of new shoots in the following year, so as to avoid the contradiction between the nutrient demand between the growth of new shoots and fruit development, and reduce physiological fruit drop.

Fertilization method: 1) Annular ditch application: On the ground at the outer edge of the canopy, at the vertical projection, a little outside, dig a annular ditch with a depth of 60 2000px and a width of 1000px, and apply decomposed organic fertilizer.

2) Radial ditch (radial) fertilization: under the canopy, from the left and right of the trunk, 6 8 radial ditches are opened outward with the trunk as the center, with a depth of 30 1500px and a width of 30 1250px, and decomposed organic fertilizer is applied.

3) Furrow fertilization: Fruit trees can be ditched in the row in a retrograde direction, and multiple can be opened, and fertilization can be applied with the ditch, and the soil will be covered in time.

The fertilization of young sugar orange trees is based on the principle of diligent application of bai thin fertilizer, and each tip is generally fertilized twice. The 1st root of the du.

Zhiji fertilization was carried out after the first shoot ripening, and the second time when the shoot opened and germinated. The second fertilization was applied when the new shoot leaves were cut into large leaves and began to turn green, and the fertilizer was mainly available nitrogen fertilizer, with an appropriate amount of phosphorus and potassium. Dilute manure water can be applied to each plant, and 30 grams of urea or 90 grams of ternary compound fertilizer can be added, and drenched under the canopy drip line.

In addition, when spraying insecticides and fungicides, it is advisable to add high-quality foliar fertilizer for spraying at the same time. For details, you can go to the Southern Sugar Orange Network to see.

What kind of fertilizer to put in the sugar orange that was just planted.

A lot? Root fertilizer, high nitrogen, high potassium ......

Newly planted sugar oranges, young trees.

There are three main objectives of management: to ensure survival, to expand the canopy, and to nurture the tree. Young trees have the characteristics of underdeveloped root system, slow growth, poor resistance to stress, and easy to die.

In view of the above three goals and the characteristics of young trees, the following measures are taken:

1. Strengthen water management. Within a year after planting, in case of drought, be sure to water in time.

2. Strengthen soil and fertilizer management. Before fruiting, the soil should be loosened and weeded every 2 months or so to avoid weed roots affecting the root development of young trees and promote root development. At the same time, combined with top dressing, it promotes the growth of the canopy and enters the production period early.

3. Timely plastic pruning. The young trees are mainly shaped, and the suitable branches are retained as backbone branches in the first year, and the later branches are cultivated through stubs. It can also be left unchecked, only the very uncoordinated side branches are pruned, and the shape can be reshaped one year before production.

4. Pest control. Mainly insect pests harm young shoots and young leaves, such as leaf miners, aphids, etc., should be sprayed with insecticides in time.

The fruiting tree after fruit bearing is transferred to normal management, please refer to the relevant literature.

The new species of sugar orange plants are relatively small, so the fertilization is mainly sprinkled and watered, and the amount is mastered, the new species is easy to burn the roots, and the orchard does a good job of drainage, or the fruit seedlings will be damaged if they are soaked in water. In fact, for new fruit seedlings, pruning work is the focus, because the level of pruning is directly related to the level of fruit hanging in the future. Now in many places, huanglongbing is serious, and it is necessary to pay attention to seedlings and control citrus psyllids.

Yellowing is preventable through management. That's all I can say in a nutshell.

Specializing in agricultural technology, welcome to communicate.

Do you have to prune the tangerines that have just come out of the sand sugar in 50 days?

Fertilization of sugar oranges should pay attention to methods and skills to achieve less fertilizer, high efficiency, economy and safety. Fertilization should be done at the root head and vertically outside the canopy. The soil is too dry and fertilized with reverse osmosis at the root causing dehydration and root damage, and the soil is too wet for fertilization, resulting in root hypoxia and root rot.

Therefore, fertilization should be done in such a way that the soil is not dry and not too wet. Nitrogen fertilizer should not be applied partially, and attention should be paid to increasing phosphorus, potassium, calcium and magnesium fertilizer. If the application of urea occurs at the end of the leaf or in the middle, then the orchard should stop drinking, then the orchard should stop the application.

Water and fertilizer made from human and animal manure and urine must be fully decomposed before it can be used.

The principle of fertilization in spring and summer is to apply frequently and thinly to avoid lack of fertilizer or excessive fertilization. Applying nitrogen fertilizer too early and too much in spring will make the spring shoots too long, and it will be difficult to set fruit between nodes, and it is easy to germinate summer shoots too early, and excessive summer shoots will cause a large number of fruit drops. Therefore, an important measure to control the early and excessive extraction of summer shoots is not to apply too much fertilizer in spring, and to do a good job of fruit preservation to suppress shoots.

Too much potassium fertilizer, too little boron deficiency, low zinc, low magnesium, low calcium, weak branches or insufficient light are more likely to crack the fruit. Fertilization in autumn and winter, first, to reapply basal fertilizer, in order to help restore the potential of sugar orange trees. The fertilization period is carried out about a week before and after the fruit picking of sugar oranges, and the basal fertilizer should be applied deeply, and the fertilization method is applied in a circular furrow, and a fertilization ditch with a depth of 40 cm and a width of 30 cm is dug at the dripping place on the outer edge of the canopy.

The types of fertilizers are mainly organic fertilizers or citrus fertilizers, supplemented by fast-acting nitrogen fertilizers. The amount of fertilizer used accounts for about 30% of the annual amount. For the severely weakened sugar orange fruit trees, it is necessary to renew the root system in combination with soil modification and fertilization.

That is, in autumn (October, November) or after thawing to spring (late February and early March) before budding, dig a ring-shaped trench about 60 cm deep and 30-40 cm wide from the trunk about 1 meter, and cut the inner wall of the ditch with the dug root system. Each plant is applied with 25 kg of fire soil ash or soil miscellaneous fertilizer, 50 kg of decomposed organic fertilizer, 15 kg of calcium, magnesium and phosphorus fertilizer, 100 kg of buried mountain green, and kilogram of lime, which are mixed with the surface fertilizer and filled into the ditch to promote the emergence of new roots. Fertilize the fruit trees with stable yield of sugar orange according to the conventional method of ditching and soil modification.

When fertilizing, ploughing, first from the outside to the tree ** ploughing can not hurt the main side roots close to the trunk to dig shallowly, with 10 cm as a degree, digging about 30 cm deep between the rows, turning the subsoil up, pressing down the topsoil, weathering the subsoil, and leveling the soil surface after fertilization.

Chicken manure fermentation organic fertilizer is a good fertilizer for sugar oranges, it is best to ferment it and then make organic fertilizer, so that the special microbial starter can be used to deodorize the material and complete the fermentation. The organic fertilizer fermented by using Gymboree fertilizer starter has good fertilizer efficiency, safe and convenient use, and can also promote disease resistance, cultivate soil fertility and improve fertilizer utilization rate.