A modified acrylic acid-coated synergistic slow-release compound fertilizer

Abstract

The invention relates to the field of composite fertilizers, and concretely relates to a modified-acrylic-acid coated synergic sustained-release composite fertilizer. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of 1250-2000 mesh diatomite, 5-6 parts of castor shell, 10-12 parts of rapeseed meal, 4-5 parts of traditional Chinese medicine residue, 5-6 parts of bamboo sawdust, 2-4 parts of zinc gluconate, 3-4 parts of ferrous sulfate, 2-3 parts of sodium thiosulfate, 6-8 parts of ethylene dimethacrylate, 10-12 parts of corn bran, 8-10 parts of potassium chloride, 12-15 parts of urea, 20-25 parts of ammonium dihydrogen phosphate, 8-10 parts of vinasse, 1-2 parts of sodium dodecyl sulfate, 12-15 parts of acrylic acid, 12-15 parts of decomposed manure, 2-3 parts of soybean powder, 2-4 parts of zinc acetate, 1-2 parts of sodium acetate and 4-5 parts of an auxiliary agent. The composite fertilizer is abundant in raw material kinds, abundant and multiple in nutrients and rich in organic materials, is capable of protecting soil and enhancing soil fertility; and dual cladding on nutrients is formed by utilizing a sustained-released coating agent prepared from diatomite and modified acrylic acid in the technology, so that the fertilizer efficiency is relatively durable, the fertilizer utilization rate is greatly improved, and increasing on both production and income of crops is guaranteed.

Description

technical field [0001] The invention relates to the field of compound fertilizers, in particular to a modified acrylic acid-coated synergistic slow-release compound fertilizer. Background technique [0002] In modern agricultural production, compound fertilizer can be seen everywhere. It has the advantages of high nutrient content, less auxiliary components, high fertilizer utilization rate, and convenient storage and application. It plays an important role in promoting high and stable crop yields. Slow-release compound fertilizer is an important category of compound fertilizers, and it is also the focus of research on the development of my country's chemical fertilizer industry. Its slow-release principle is to coat a thin layer of hydrophobic substances on the surface of fertilizer particles, so that the internal nutrients are slowly released to the In the soil, nutrients are continuously supplied to crops, which effectively improves the utilization rate of fertilizers. Ho...

AI Technical Summary

Problems solved by technology

However, the existing slow-release compound fertilizers still have certain shortcomings, mainly in that the nutrient ratio is relatively fixed, and it is difficult to meet the different needs of various soils and various crops; the slow-release effect is not satisfactory, and does not match the growth needs of crops , thereby reducing fertilizer efficiency, affecting crop growth, resulting in reduced production and income