Organic-matter-containing compound fertilizer with residual magnetism

Abstract

The invention discloses an organic-matter-containing compound fertilizer with residual magnetism. The compound fertilizer is prepared from, by weight, 15 parts of urea, 10 parts of monoammonium phosphate, 15 parts of calcium superphosphate, 10 parts of potassium chloride, 10 parts of ammonium sulfate, 10 parts of coal ash or tailings and 30 parts of peat soil. A preparation method includes steps: step one, preparing urea mother liquor; step two, mixing and stirring to obtain coarse particles for standby application; step three, grinding; step four, adopting a steam drum for granulation; step five, drying at a high temperature; step six, performing cooling treatment; step seven, screening to obtain granulated fertilizer; step eight, magnetizing the granulated fertilizer in a high-intensity magnetic separator to obtain a product. The organic-matter-containing compound fertilizer with residual magnetism has advantages that soil quality is improved, soil bulk density is reduced, moisture and fertilizer retention performances of soil are greatly improved, the fertilizer utilization rate is increased, nutrients of the fertilizer are completely absorbed by plants, and cost reduction is realized.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a compound fertilizer with residual magnetism and organic matter. Background technique [0002] Farmers use a lot of chemical fertilizers when farming, which are quick to take effect but not easily absorbed by crops, and the long-term use will make the land salinization more and more serious, resulting in secondary pollution of the land; because chemical fertilizers are very easy to It is soluble in water, and the part that is not absorbed by crops will cause river pollution; and the cost of chemical fertilizers is relatively high, and long-term use will increase the burden on farmers. Contents of the invention [0003] (1) Technical problems to be solved [0004] In order to solve the above problems, the present invention proposes a compound fertilizer with residual magnetism and organic matter, which improves the use effect of existing chemical fertilizers, improves soil quality, reduces soil...

AI Technical Summary

Problems solved by technology

[0002] Farmers use a lot of chemical fertilizers when farming, which are quick to take effect but not easily absorbed by crops, and the long-term use will make the land salinization more and more serious, resulting in secondary pollution of the land; because chemical fertilizers are very easy to It is soluble in water, and the part that is not absorbed by crops will cause river pollution; and the cost of chemical fertilizers is relatively high, and long-term use will increase the burden on farmers