Bactericidal insecticidal nitrogen phosphorus and potassium composite fertilizer and preparation method thereof

Abstract

The invention discloses a bactericidal insecticidal nitrogen phosphorus and potassium composite fertilizer which is prepared from the following raw materials in parts by weight: 30-33 parts of potassium feldspar, 30-33 parts of phosphorite, 130-135 parts of a 65% phosphoric acid solution, a proper amount of stronger ammonia water, 12-13 parts of egg shells, 17-18 parts of rice hull, 13-14 parts of duck intestines, 5-6 parts of ginkgo leaves, 14-15 parts of bone meal, 15-16 parts of kaolin, 0.1-0.2 part of mannitol, 0.5-0.7 part of zinc citrate, 6-7 parts of carboxymethyl chitosan, 5-6 parts of isopropanol, 10-11 parts of a 40% sodium hydroxide solution, 22-24 parts of a 50% 3-chlorine-2-hydroxypropyl trimethyl ammonium chloride solution, a proper amount of a 10% hydrochloric acid solution, a proper amount of a 80% methanol solution, a proper amount of absolute ethyl alcohol, 3-4 parts of polyvinyl alcohol and 1-1.2 parts of microorganism powder. When a reaction product of potassium feldspar, phosphorite and phosphoric acid is extracted with water, a soluble phosphate-potassium component can be obtained, after reaction of carboxymethyl chitosan, ions which are dissolved from kernels of the fertilizer and have different charges can be adsorbed through electrostatic force, then the slow-release property of the fertilizer can be improved, and the fertilizer has the insecticidal and bactericidal functions.

Description

technical field [0001] The invention relates to the technical field of fertilizer processing, in particular to a bactericidal and insecticidal nitrogen, phosphorus and potassium compound fertilizer and a preparation method thereof. Background technique [0002] Fertilizer occupies an important position in agricultural production, is the largest material investment in agricultural production, and is one of the most important means of production in agricultural production. The most important nutrients needed by plants during the growth process are nitrogen, phosphorus and potassium. Most of them are absorbed by plants in the form of calcium phosphate, nitrate or ammonium ions and potassium ions. Among them, calcium and phosphate ions are The soil is produced continuously during the weathering of stones, and only a small amount of nitrogen exists in the soil in the form of ammonium ions, and most of it exists in the organic soil in the form of organic nitrogen and other combine...

AI Technical Summary

Problems solved by technology

At present, the world generally extracts potassium from soluble potassium ore or directly uses potassium salt minerals as raw materials to manufacture potassium fertilizers. my country's water-soluble potassium ore resources are seriously scarce, lacking large soluble potassium salt deposits, and the distribution is very uneven