A chart to explain whether different fertilizers can be matched with each other.

Fertilizer compounding relationship checklist

Fertilizer compounding relationship checklist

In recent years, through technical training, the level of farmers' scientific farming is getting higher and higher, and many large-scale planting and professional cooperatives tend to mix fertilizers themselves. However, in the mixing process, various problems are often encountered: Can several fertilizers be dissolved and mixed together? How do you mix them without affecting the fertilizer efficiency and chemical reactions? Only the common nitrogen and phosphorus are known. The physical properties of potassium fertilizers, especially the hygroscopicity, agglomeration and particle size, can be reasonably applied correctly.

The smaller the hygroscopicity and agglomeration after the fertilizer is mixed, the better.

(Hygroscopicity refers to the ability of chemical fertilizers to absorb moisture in the air; agglomeration is related to the hygroscopicity of the surface of elemental fertilizer granules, and fertilizers with high hygroscopicity are prone to agglomeration. The existence of these two properties is unfavorable for the storage, transportation and application of fertilizers. The principle of mixed fertilizer application requires that the hygroscopicity and agglomeration of the mixture be as small as possible.)

Most water-soluble fertilizers absorb air moisture more or less, but there are great differences between different varieties. It is indicated by the moisture absorption point at normal temperature that a low moisture absorption point indicates that the hygroscopicity is large and the fertilizer is easily deliquescent. Among the common chemical fertilizers, calcium nitrate and ammonium nitrate were the lowest (42.7%, 66.5%, respectively);

Ammonium chloride, urea and potassium chloride were medium (79%, 82%, 84%); ammonium sulfate, superphosphate and potassium sulfate were higher (86%, 91%, 95%). The above data is the hygroscopic point of the simple fertilizer. When the fertilizer is mixed, the hygroscopicity is more obvious than that of the simple substance, and it is easier to absorb water and deliquesce.

Should choose chemically compatible single fertilizer

(There are some chemical reactions that tend to occur during the mixing of two or more elemental fertilizers. Some of these reactions are benign, and some may result in increased hygroscopicity and agglomeration or effective nutrient fixation to reduce fertilizer efficiency. Therefore, chemical compatibility is required. The single fertilizer is mixed and applied.)

If two chemically incompatible single fertilizers are blended together, heat, humidity, gas evolution or agglomeration will occur. For example, the mixing of calcium and calcium carbonate can lead to the loss of ammonia; ammonium nitrate and urea are completely incompatible two kinds of simple fertilizers. If they are mixed and stacked, the hygroscopicity is greatly enhanced, resulting in a drier.

In the environment, the mixed materials are also very easy to absorb moisture, and even dissolves and cannot be applied; urea and superphosphate are two kinds of fertilizers that are limitedly mixed, which can be mixed and used, but cannot be stored, especially in the summer high temperature and high humidity season. Immediately after mixing, apply to the soil, do not stay overnight, otherwise the mixed materials will slowly deliquesce and become a paste. In a compound fertilizer processing plant, the free acid in the superphosphate is neutralized with ammonium to form an ammoniated superphosphate, which can be mixed with urea.

The mix of common elemental fertilizers can be found in the table below, and relevant information can be found on the table. In the common elemental nitrogen fertilizer and phosphate fertilizer, the material of the superphosphate mixed with ammonium sulfate is good and can be directly used as seed fertilizer or base fertilizer; while the superphosphate and ammonium bicarbonate are limited, the two must be mixed in a certain proportion. And should be used as a base fertilizer, do not store, the best ratio of the two

At 7:3, if the ammonium bicarbonate is too much, the proportion of water-soluble phosphorus in the superphosphate is easily lowered. More phosphate fertilizer can be applied to the soil as a base fertilizer at one time, while less ammonium carbonate can be reserved for later fertilizer application.

Mix fertilizer size to match

(When several granular fertilizers are mixed and applied, stratification may occur during storage, transportation and application, resulting in uneven fertilization and poor fertilizer efficiency. The delamination problem is related to the uneven size of different fertilizer particles.)

When two or more kinds of granular fertilizers are mixed, the particle size is required to be uniform, otherwise secondary separation will occur, and the principle of mixing and using is to be grasped. (Henan Daily Rural Edition)

This article URL: A chart full solution of different fertilizers can match each other

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