Slowly released phosphatic fertilizer

Abstract

The invention discloses slowly released phosphatic fertilizer which consists of the following raw materials in parts by weight: 40-60 parts of powdered rock phosphate, 10-15 parts of biological bacterium controlled release agent, 20-40 parts of calcium magnesium phosphatic fertilizer and 7-10 parts of bentonite. The production method comprises the following steps of: firstly mixing powdered rock phosphate, the biological bacterium controlled release agent and calcium magnesium phosphatic fertilizer according to the ratio in parts by weight, then stirring uniformly, stacking and fermenting, finally adding bentonite into the fermented fertilizer, granulating by a rotary drum, and then packaging finished products. The slowly released phosphatic fertilizer disclosed by the invention has the advantages that the using quantity of the fertilizer is reduced; soil is modified, and the release speed of nutrients is regulated and controlled, and the integration of quick acting and long acting is realized; the pesticide use quantity is reduced, and the capabilities of salt resistance, drought resistance, lodging resistance, continuous cropping resistance of crops are intensified; and conditions for large modern mechanical operation are created.

Description

technical field [0001] The present invention relates to the technical field of fertilizers. Background technique [0002] Fertilizers can provide the necessary nutrients for the growth of crops, but different fertilizers or similar fertilizers have different ratios of ingredients and different manufacturing processes, and the degree of absorption and utilization of them by crops is also different, and some of them lead to very slow absorption by crops. , and some cannot be directly absorbed at all, such as calcium magnesium phosphate fertilizer, which is a powdery phosphate fertilizer, which is difficult to apply, which is not conducive to manual operation, agricultural machinery operation, or granulation. Modern mechanical operations It becomes a problem; it is also a kind of citrus soluble fertilizer, insoluble in water, and it is difficult for crops to absorb it directly. After calcium magnesium phosphate fertilizer is applied to the soil, the phosphorus in it can only be...

AI Technical Summary

Problems solved by technology

[0002] Fertilizers can provide the necessary nutrients for the growth of crops, but different fertilizers or similar fertilizers have different ratios of ingredients and different manufacturing processes, and the degree of absorption and utilization of them by crops is also different, and some of them lead to very slow absorption by crops. , and some cannot be directly absorbed at all, such as calcium magnesium phosphate fertilizer, which is a powdery phosphate fertilizer, which is difficult to apply, which is not conducive to manual operation, agricultural machinery operation, or granulation. Modern mechanical operations It becomes a problem; it is also a kind of citrus soluble fertilizer, insoluble in water, and it is difficult for crops to absorb it directly. After calcium magnesium phosphate fertilizer is applied to the soil, the phosphorus in it can only be dissolved by the weak acid or other substances secreted by the roots of the crops. Only after a certain transformation process can it be absorbed by crops, so the fertilizer effect is slow, and it is a slow-acting fertilizer; phosphate rock powder is also a powdery insoluble phosphate fertilizer. After it is applied to the soil, most crops are also difficult to directly absorb and utilize. It still depends on the acidity in the soil, soil microorganisms, weak acids secreted by crop roots, etc. for transformation, so that it can be absorbed and utilized by crops. Its fertilizer effect is very slow, and generally it must be processed into superphosphate, but it needs to consume a lot of sulfuric acid, which not only wastes energy. , but also cause environmental pollution, the disadvantages are very obvious