Green composite fertilizer

Abstract

The invention discloses a green composite fertilizer. The green composite fertilizer is prepared from, by weight, 85-92 parts of lightweight shale powder, 4-12 parts of a nitrogen fertilizer, 2-6 parts of a phosphorus fertilizer and 2-6 parts of a potassium fertilizer, and the particle size of the lightweight shale powder is 200 meshes ~ 50 nm. The green composite fertilizer is prepared through carrying out extruding granulation on above raw materials through an extruder, the inlet temperature of the extruder is 200-300DEG C, and the outlet temperature of the extruder is 60-80DEG C. The green composite fertilizer can provide enough nutrients for crops to make the crops be tall and straight, can improve the disease and preset resistance of the crops, and also has the advantages of greenness, environmental protection, easily available raw materials, low cost and simple preparation method.

Description

technical field [0001] The invention relates to the field of base fertilizer, in particular to a green compound fertilizer for soil improvement. Background technique [0002] The agricultural production activities of human beings are mainly carried out on the soil, and the agricultural products needed by human beings are produced directly or indirectly from the soil. Therefore, the nature of the soil restricts the growth and development of plants and the effect of agricultural production measures to a large extent, so soil It is the foundation of agriculture and an indispensable natural resource for human beings. However, in my country, the status quo of soil has the following problems: (1) the per capita quantity is relatively small, so productivity needs to be increased; (2) the overall quality is low; (3) soil degradation is serious. [0003] Chinese patent CN104829398A discloses an organic soil improvement fertilizer, which uses plant straw powder, humic acid, phosphate...

AI Technical Summary

Problems solved by technology

However, in our country, the current status of soil has the following problems: (1) the per capita quantity is relatively small, so productivity needs to be increased; (2) the overall quality is low; (3) soil degradation is serious

[0003] Chinese patent CN104829398A discloses an organic soil improvement fertilizer, which uses plant straw powder, humic acid, phosphate rock powder, potassium ore powder, castor meal, smoke mud, urea, EM bacterial agent, medium and trace elements and seaweed as raw materials , fully mixed to make fertilizer, which can improve the soil and increase soil fertility, but the raw materials required are complex, difficult to operate, and costly, and there is no improvement in the pollution components in the soil such as heavy metals, and food safety cannot be guaranteed

[0004] Chinese patent CN105367346A discloses a slow-release fertilizer for soil improvement, which activates phosphate rock powder through high temperature and acid solution to increase the content of soluble phosphorus. The fertilizer can effectively absorb heavy metals in the soil and improve the pollution Soil, to ensure food safety, however, the improvement of soil fertility is not enough, and the yield of crops has not improved significantly

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