What is the best foliar fertilizer for fruit trees Urgently

What fertilizer is good for fertilizing fruit trees.

1. Urea and diammonium phosphate are generally applied to fruit trees.

Superphosphate, potassium sulfate.

Organic fertilizer, soil fertilizer and other fertilizers are better. Chemical fertilizers can only play a role in supplementing nutrients for fruit trees, but cannot improve the structure of the soil, if only chemical fertilizers are used for a long time, it will cause the phenomenon of soil compaction, so that the nutrients in the soil are out of balance.

2. When using chemical fertilizer for fruit trees, it should be applied in conjunction with organic fertilizer or soil miscellaneous fertilizer, that is, organic fertilizer or soil miscellaneous fertilizer is the main fertilizer, supplemented by chemical fertilizer (chemical fertilizer can be applied as top dressing, such as fertilizer supplementation during the critical period of growth and development of fruit trees), so that it can have an immediate effect.

3. When the fruit tree has the symptoms of nutrient deficiency, it can be supplemented by more topdressing fertilizer or topdressing outside the roots, but the number of topdressing should be determined according to the growth changes of the fruit tree in the annual cycle, and under normal circumstances, 3-5 times can be topdressed.

Because foliar fertilizer can improve the fruit setting rate of fruit trees, promote fruit expansion and increase chlorophyll content, it is good for improving fruit tree yield. Rapid nutrient supplementation, convenient fertilization, and strong targeting are all advantages of foliar fertilizer.

Foliar fertilizer is the fundamental top dressing, which allows fruit trees to absorb sufficient nutrients through the leaves, the use of foliar fertilizer in the flowering period of fruit trees can improve the fruit setting rate, and the spraying of foliar fertilizer in the growth period of leaves and fruits can promote fruit expansion and increase the chlorophyll content in the leaves, which can make the fruit thrive, will improve the yield of fruit trees, can ensure the quality of fruits, and will increase the income of fruit farmers. Foliar fertilizer is labor-saving, labor-saving, quick effect, and the utilization rate is particularly high, allowing plants to absorb 80% of nutrients within 24 hours.

Foliar fertilizer is a widely used fertilizer, and the nutrients contained in this fertilizer can be absorbed by plants quickly, and the absorption rate is particularly high. For a variety of trace elements such as calcium and magnesium, the absorption rate of plants through soil topdressing is particularly low, and the fertilizer effect is very slow, the use of foliar fertilizer can quickly supplement these trace elements for plants, can make up for the lack of trace elements in the soil and can reduce the occurrence rate of fruit cracking, and can also improve the fruit setting rate.

Convenient fertilization is an important advantage of foliar fertilizer, this fertilizer can be sprayed at any time, can also be mixed with pesticides, etc., spraying on the leaves of plants is particularly convenient to fertilize, and the labor cost is very low. Some fruit trees are inconvenient to dig trenches in the flowering period, and direct spraying of foliar fertilizer can be solved when fertilizing, their need for fertilizer, foliar fertilizer can make up for the lack of root fertilization, and can save labor costs, and can also improve the absorption and utilization rate of fertilizer by plants.

Strong pertinence is also an important advantage of foliar fertilizer, it will be based on the lack of nutrients in the growth of fruit trees, and choose the right foliar fertilizer spraying can allow plants to absorb quickly, which can reduce the waste of fertilizer, can also avoid fertilizer pollution to the soil, can provide a healthier and more suitable growth environment for fruit trees, is conducive to the rapid growth and normal growth of fruit trees, can make fruit trees produce more high-quality fruits, will improve fruit tree yield.

Foliar fertilizer is a fertilizer that is sprayed on the foliar surface of the plant, absorbed by the foliar surface, and the foliar fertilizer enters the plant body through the leaves to participate in metabolism, and the foliar fertilizer supplements nutrients quickly, which has a good effect on the treatment of nutrient deficiency, and is one of the important fertilization methods at present.

What are the advantages of foliar fertilizers.

Replenish nutrients quickly.

Foliar fertilization can quickly supplement the nutrients required by plants, and the absorption efficiency is faster, for calcium and other elements, soil fertilization is slower, and the efficiency is not high, foliar fertilization can quickly supplement nutrients such as calcium and magnesium, for example, we spray Gaishimei foliar fertilizer (high-end calcium and magnesium foliar fertilizer) during the fruit expansion period, which can make up for the lack of calcium and magnesium in the soil, and can effectively reduce the phenomenon of fruit cracking.

Fertilization is convenient. Foliar fertilizer can be sprayed at any time, can also be mixed with pesticides, etc., fertilization is convenient, labor cost is also low, for example, citrus flowering is inconvenient to dig trenches for fertilization, foliar fertilizer spraying is very convenient. Foliar fertilization compensates for the lack of fertilization of the root system.

Targeted. According to the plan of what nutrients are lacking, foliar fertilization is more targeted, and at the same time, it can also reduce the waste of fertilizer and reduce the pollution of fertilizer to the soil.

In order to prevent the harm of borers, it can make the fruit trees grow more healthily; This fertilizer will be more convenient, can be sprayed with pesticides, and the absorption effect of this fertilizer is very fast, it will not appear rapid oxidation when spraying.

This can promote the absorption of nutrients by plants, save the amount of fertilizer, improve economic benefits, and allow plants to fully absorb nutrients.

To put it simply, the application of foliar fertilizer is to supplement the nutritional deficiency in the process of plant growth, or to change the impact of other physiological diseases on the healthy growth of plants due to nutrient deficiency. The use of foliar fertilizer generally follows the foliar fertilizer with more nitrogen in the early stage, and the trace elements of the foliar fertilizer in the middle stage are a little more, especially the boron, zinc and magnesium content is a little higher, and the later plant fruit stage needs a large amount of nutrients to accumulate and store, and appropriately increase the foliar fertilizer with a higher potassium fertilizer content to quickly transport nutrients under the action of potassium ions.

Its benefits are mainly as follows:

1. Fast absorption, can timely ** nutrients required by fruit trees, after foliar spraying, the speed of fertilizer into the leaf is generally ten minutes to several hours, such as nitric acid nitrogen fertilizer into the leaf time of 15 minutes, potassium chloride is 30 minutes, urea spray 1 to 4 hours after 1 to 4 hours can absorb 50% due to the role of fast, can alleviate the urgent need for nutrients of fruit trees.

2. It can save fertilizer and labor, because the amount of foliar fertilizer spray is small, and can be carried out together with the prevention and control of pests and diseases, so it has the characteristics of less dosage and provincial government.

3. It can significantly improve the photosynthesis of leaves, according to relevant studies, after the fruit tree is sprayed with foliar fertilizer, the leaves are thickened, the leaf color is dark green, and the photosynthesis intensity can be increased to more than 1%.

4, can regulate the contradiction between nutrient supply and demand, promote growth and fruit, such as apple in the flowering period of nutrient consumption, spray urea and boron fertilizer can improve the fruit setting rate, can also accelerate the growth of new shoots, in the flower bud differentiation and fruit expansion period, the organs are staggered and overlapped growth, the contradiction between nutrient supply and demand is more prominent, this period of foliar spraying potassium dihydrogen phosphate, is conducive to flower bud differentiation, fruit expansion, can improve fruit quality, increase yield, ensure bumper yield year after year, improve economic benefits.

5. It helps to overcome the deficiency of nutrients, such as yellowing in apple iron deficiency, and ferrous sulfate can be sprayed to prevent yellowing. Zinc sulfate spraying can prevent and control apple lobular disease.

Although foliar fertilizer has great benefits, but can only be used as an auxiliary measure, can not replace the root soil fertilization, only under the condition of attaching importance to soil fertilization, especially the use of organic fertilizer, and deep soil reform, under the premise, can play its due role and achieve better results.

1. Fertilization of fruit tree roots.

1.Absorb water: If crops want to grow properly, they need to have an adequate supply of water. The water absorbed by fruit trees comes from the soil, which depends on the active absorption of the root system.

2.Absorption of nutrients: In fact, not all nutrients are recognized by the root system and actively absorbed, for example, if you use nitrogen, phosphorus, potassium, calcium, magnesium and phosphorus fertilizers to fertilize at the same time, why do fruit trees grow for a period of time or still fail to achieve the expected effect?

That's where the problem lies, it's caused by a preference of the root system. No matter what fertilizer you apply, as long as it contains nitrogen fertilizer, the root system of fruit trees will give priority to nitrogen, and other nutrients will be queued up to absorb, which can also be said to be picky eaters of fruit trees, so it is difficult to achieve phosphorus and potassium fertilizer fertilization in the soil.

Pre-flowering spraying of fruit trees can improve the fruit setting rate, reduce the occurrence of flower and fruit drop, and promote fruit expansion. Fruit trees need fertilizer at the peak of their post-flowering period, and the shortage of nutrients at this time determines the yield of a single fruit tree, and at the same time can improve fruit quality, bright color, sweetness and taste, and promote early ripening.

It can protect flowers and fruits, promote the differentiation of flower buds of fruits, improve the efficiency of fertilization, and promote the rapid growth of young trees. My opinion is that it is important to spray foliar fertilizer evenly, and to top dress the soil to promote calcium absorption.

<> foliar spraying of jujube rows in the growing season of fruit trees is an effective means to supplement the insufficient soil fertilization, which has the characteristics of small amount of fertilizer, high utilization rate, fast effect and obvious effect, and can avoid the fixed loss of soil fertilization. Especially when there is drought and water shortage, soil fertilization is not easy to play a role, and foliar fertilizer can effectively improve the nutritional status of trees and create conditions for the growth and development and fruiting of fruit trees. Foliar fertilization of fruit trees should pay attention to the following matters.

1. Pay attention to the spraying period and dosage.

l.Nitrogen fertilizer should generally be used in the early and late growth of fruit trees, with appropriate phosphorus and potassium fertilizers. Appropriate spraying concentration can effectively promote the growth of new shoots, increase fruit yield, and facilitate flower bud differentiation.

urea concentration in the early stage and concentration in the later stage; The concentration of feces and urine of decomposed mature people is used in the early stage, and the concentration of lo% is used in the later stage.

2.Phosphate fertilizer spraying should grasp the principle of less in the early stage and more in the middle and late stages. Ammonium phosphate has the best effect, and the concentration is; The concentration of potassium dihydrogen phosphate is; The concentration of superphosphate leaching solution is l% 3%.

3.Potassium fertilizer is mostly used in the middle and late stages. It can effectively promote fruit coloration, improve fruit quality and enhance disease resistance. Potassium sulfate and potassium nitrate are used at concentrations; The plant ash is soaked in 5 l5 kg of water and kg for 24 hours, and then the slag can be sprayed.

4.Trace element. If lobular disease is found in the previous year, it can be sprayed with 3% 5% one month before the germination of fruit trees, and zinc sulfate solution can be sprayed during the growth period.

When it is found that the leaves are green and yellowish-white, ferrous sulfate solution can be sprayed every half month during the growth period. When it is found that the fruit is shrunk and deformed, and there are dry spots on the surface, borax liquid can be sprayed before and after flowering in the following year.

2. Pay attention to the spraying time.

The best spraying effect is on semi-cloudy and windless days, and the time should be before lo o'clock in the morning and after 4 o'clock in the afternoon. Nitrogen fertilizer spraying at full flowering stage can improve fruit setting rate. Nitrogen fertilizer spraying at the young fruit stage can promote the expansion of young fruits Nitrogen fertilizer spraying in the month can effectively promote flower bud differentiation with phosphorus and potassium fertilizer. Spraying phosphorus and potassium fertilizer in the later stage can improve the sugar content and promote the coloring of fruits. Trace elements can be sprayed around the flowering stage.

3. Pay attention to the spraying method.

Foliar spraying can be carried out alone, or mixed spraying with several fertilizers or mixed with pesticides to save labor. However, it should be noted that the mixed spraying between fertilizers or pesticides can not produce fertilizer damage or pesticide damage. Urea is a neutral fertilizer that can be mixed with a variety of pesticides.

Pesticides and fertilizers with different acids and alkalinities should not be mixed, such as various micro-fertilizers can not be mixed with alkaline fertilizers such as plant ash and lime; Zinc fertilizer should not be mixed with superphosphate. Before mixing fertilizer and pesticides, take a small amount of solution of fertilizer and put it into the same container, if there is no turbidity, precipitation, bubbles and other phenomena, it indicates that it can be mixed, otherwise it can not be mixed. When spraying fertilizer on the foliar surface, it should be up and then down, evenly and thoroughly, mainly spraying the back of the leaves.

Foliar spray is generally only l2 l5 days, need to be sprayed more than 2 3 times in a row, long-term spraying will affect the growth of the root system, weaken the physiological function of the root system, so on the basis of soil fertilization, the foliar spray fertilizer as an auxiliary measure to quickly replenish nutrients to apply filial piety.