What is foliar fertilizer? Does foliar fertilization work well?

Foliar fertilizer is a fertilizer that is sprayed directly on the foliar surface of the crop, and the crop can absorb the fertilizer nutrients through the foliage.

Benefits of Foliar Fertilizer Spraying:1) Fast absorption.

Cadmium foliar silicon fertilizer is sprayed on the leaves of crops by foliar spraying after mixing with water, and the crops do not need to go through the soil, but directly absorb the fertilizer through the stomata of the leaves and enter the plant. Fertilizer is absorbed faster through the leaves than by the roots in the soil.

2) High fertilizer utilization rate.

Soil fertilization can easily lead to part of the fertilizer nutrients being fixed by the soil, and at the same time, due to leakage, loss, etc., the final nutrients absorbed by crops will be greatly reduced. Cadmium foliar fertilizer is directly applied to crop leaves, which greatly improves the utilization rate of fertilizer.

3) Environmental protection. Foliar fertilizer does not need to pass through the soil, which can well avoid secondary pollution of the soil.

4) The dosage is small.

Usually a large amount of fertilizer is required to be fertilized once to ensure the effect; The cadmium foliar fertilizer is used 1 bottle per mu each time, and 1 bottle of 500 ml can be sprayed with water in proportion.

Hope it helps

For the purpose of foliar absorption, the nutrients required by crops are directly applied to foliar fertilizer, which is called foliar fertilizer.

Foliar fertilizer is a type of fertilizer that nutrients are applied to the surface of crop leaves, and play a basic function through the absorption of leaves, the leaves of plants have two layers of epidermis, which are composed of delicate epidermis, and the outer side of the cells on the surface has a cuticle and wax, which can protect the mesophyll cells under the epidermal tissue to exercise photosynthesis, respiration and other functions, and is not affected by changes in external adverse conditions.

The blades also have many tiny pores that perform the function of gas replacement. Studies have shown that the cuticle is composed of a long-chain fatty acid polymer with hydroxyl and carboxyl groups, and the intermolecular space of this polymer and the hydrophilic groups of hydroxyl and carboxyl groups on the molecule can allow the aqueous solution to penetrate into the leaves.

Urea substances in chemical fertilizers have a softening effect on the stratum corneum of epidermal cells and can accelerate the penetration of other nutrients, so urea substances have a softening effect on the stratum corneum of epidermal cells and can accelerate the infiltration of other nutrients, so urea has become an important component of foliar fertilizer.

Introduction to foliar fertilizers.

Foliar fertilizer refers to the fertilizer that applies the nutrients required by crops directly to the foliar surface to make up for the lack of nutrients absorbed by the plant roots.

Foliar fertilizer characteristics.

Merit. First, foliar fertilizer is absorbed quickly. Various nutrients enter the plant directly from the leaves and can be quickly absorbed by the plant; Second, the effect of foliar fertilizer is strong.

Foliar fertilizer is easy to be absorbed by plants, which can quickly alleviate crop fertilizer deficiency, promote the progress of various physiological processes in plants, and improve plant quality. Third, the amount of foliar fertilizer is small and the cost is low. Foliar fertilizer is sprayed directly on the foliage, which is more material-saving than root fertilizer.

Shortcoming. First, the leaves with thick horns have low nutrient absorption permeability and low absorption; Second, foliar fertilizer is easy to drip from the leaves, and the nutrients sprayed are easy to be lost by rainwater; Third, the spray dries quickly on the leaf surface, which affects the absorption of plants; Fourth, nutrients such as calcium are difficult to transfer from the absorption site to other sites; Fifth, the nutrients provided by foliar fertilizers cannot meet all the needs of plant growth; 6. Improper use of foliar fertilizer before splitting is easy to cause foliar burns of plants; The effect time of seven-leaf fertilizer is short, and it needs to be sprayed many times, which is time-consuming and laborious.

Precautions for the use of foliar fertilizer.

Foliar fertilizer should be mainly applied to the roots, and the appropriate spraying concentration, spraying method, spraying time and spraying time should be selected to give full play to the role of foliar fertilizer.

To apply foliar fertilizer, foliar fertilizer is suitable for the period of application: crop growth is divided into the growth period of nutrient elements and the growth period of the urinary system, the key physiological stage of the two steps is very different, and the growth direction of the two steps is also very different. Therefore, there is a certain difference in the types of leaf fertilizer used in the growth period of nutrients and the growth stage of the urinary system.

In the growth period of crop nutrients, it is usually the growth of several vegetative organs, such as roots, stems and leaves, especially the growth rate of leaf stems is very large.

Some food crops also have a high demand for zinc during the growth period of nutrients, so as to achieve the normal physiological and biochemical reaction of green plants. Therefore, in the growth period of crop nutrients, you can choose some nitrogen and zinc element leaf fertilizer, medium and trace element leaf fertilizer, humic acid, protein and other leaf fertilizer. However, during the growth period of the urinary system of crops, the growth and development of nutrients are mostly guaranteed in the middle and late stages, and the growth and development changes to the perspective of flowering, pollination and stability.

At this time, the demand for nitrogen is reduced, and the demand for phosphorus and zinc required for the growth and development of the urinary system is very high. Therefore, in the urinary growth period of crops, potassium dihydrogen phosphate fertilizer can be selected. For food crops that have just arrived at the growth and development of the urinary system, trace elements and humic acid organic fertilizers can also be sprayed, which also has a certain effect on improving crop growth.

The actual effect of leaf fertilization is related to the movement efficiency of spraying elements in the plant body, the highly mobile elements are nitrogen, phosphorus, potassium, sodium, etc., all the elements that can move but are weak are phosphorus, sulfur, etc., and some mobile elements are iron, copper, manganese, molybdenum, etc. It is not possible to move or move, and the aqueous solution of small element fertilizer is sprayed on the new shoots, and the effect is better.

A variety of leaf fertilizer mixed spraying, or fertilizer and chemical fertilizer mixed spraying, can play a multi-effect effect, but when mixing spraying, we must first understand the characteristics of chemical fertilizer and the characteristics of chemical fertilizer. If the characteristics are reversed, they should never be mixed with spraying. When configuring the mixed solution, be sure to mix well, now in use, generally directly configure a chemical fertilizer into a solution, and then add other chemical fertilizers according to the amount of fertilizer immediately add a little fertilizer aqueous solution, and then spray after the aqueous solution is mixed.

In general, it is better to apply foliar fertilization at the seedling stage of vegetables, and it is best to do it on a rainy day or in the evening.

Foliar fertilizer application can promote better growth of plants and enhance foliar fertilizer absorption ability. It is suitable for fertilization at the seedling stage and the first flowering stage of plants, as well as during the critical period of plant growth.

Let it be a good supplement of nutrients and will not wilt; They are better suited in the middle or late stages, when fertilization can make them bloom more lushly.

<> foliar fertilizer is useful. After spraying leaf acorn row fertilizer, it can improve crop photosynthesis, increase crop yield and improve quality, especially spraying positive resistance before fruit tree flowering can improve fruit setting rate and reduce the occurrence of flower and fruit drop, but if the soil is fertile and there is no lack of foliar fertilizer, then the yield increase effect will not be too obvious.

Foliar fertilizer refers to the fertilizer that directly applies the nutrients required by crops to the foliar surface to make up for the lack of nutrients absorbed by plant roots.

Advantages First, the absorption of foliar fertilizer is fast. Various nutrients enter the plant body directly from the leaves and can be quickly absorbed by the plant;

Second, the effect of foliar fertilizer is strong. Foliar fertilizer is easily absorbed by plants, which can quickly alleviate the fertilizer deficiency of crops, promote the progress of various physiological processes in plants, and improve the quality of plants.

Third, the amount of foliar fertilizer is small and the cost is low. Foliar fertilizer is sprayed directly on the foliar surface, which is more economical than root fertilization.

Disadvantages: First, the nutrient absorption penetration rate of leaves with thick cuticin is low and the absorption amount is small;

Second, foliar fertilization is easy to drip from the foliar surface, and the nutrients sprayed are easily lost by rainwater;

Third, the spray liquid dries out quickly on the leaf surface, which affects the absorption of plants;

Fourth, nutrients such as calcium are difficult to transfer from the absorption site to other parts;

Fifth, the nutrients provided by foliar fertilizer cannot meet all the needs of plant growth;

Sixth, improper use of foliar fertilizer can easily cause foliar burns of plants;

Seventh, the foliar fertilizer effect time is short, and it needs to be sprayed many times, which is time-consuming and laborious.

Foliar fertilizer should be based on root fertilization, and the appropriate spraying concentration, spraying method, spraying time, and spraying time should be selected to give full play to the efficacy of foliar fertilizer.

Foliar fertilizers are liquid fertilizers. Foliar fertilization is a supplement to the absorption of nutrients by plants to make up for the lack of nutrient absorption by the root system, and foliar fertilization cannot replace soil fertilization.

The principle of foliar fertilizer first has a clear leaf structure, and the basic structure of the leaf is the leaf, petiole and leaf. The leaf cha also includes the epidermis, mesophyll, and leaf veins. Mesophyll is generally divided into palisade tissue and spongy tissue (which is different between C3 and C4 plants).

Foliar fertilizer is a fertilizer that can be applied directly to the leaves to compensate for the lack of nutrient uptake by the roots, but it does not fully represent fertilization of the soil. Spraying foliar fertilizer can also quickly replenish nutrients, and can also fully exert the effect of fertilizer. If you want to fertilize the root system, it is easy to be fixed by the soil, which will affect the effect of the fertilizer and reduce the pollution of the soil.