Environment-friendly carbon-based slow release fertilizer and preparation method thereof

Abstract

The invention discloses environment-friendly carbon-based slow release fertilizer which is prepared from raw materials in parts by weight as follows: 23-25 parts of rapeseed cakes, 16-18 parts of diatomite, 19-21 parts of rice straw, 3-5 parts of a modified cassava starch solution, 2-4 parts of silicon sulfate, 4-6 parts of monopotassium phosphate, 4-6 parts of attapulgite, 5-8 parts of raw humic acid powder, 27-29 parts of wheat bran and 18-22 parts of edible fungus residues. The used raw materials of the carbon-based slow release fertilizer are environment-friendly, a large number of organic matters are contained, the rice straw which is cheap and easy to obtain is subjected to carbonizing treatment, large-scale carbon emission and air pollution caused by direct returning of straw to fields and burning in rural areas are relieved, meanwhile, the fertility of soil is recovered, the production performance of the soil is improved, and the fertilizer conforms to the sustainable development concept of the nation in the aspect of agricultural production and is environment-friendly and efficient.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a green and environment-friendly carbon-based slow-release fertilizer and a preparation method thereof. Background technique [0002] Biochar is an insoluble porous solid material formed by pyrolysis of plant biomass at low temperature. It has high biochemical stability. After entering the soil, it can significantly improve the physical and chemical properties of the soil. It is an excellent fertilizer Sustained release material. However, the use of biochar to make slow-release fertilizers is rarely used in the market at present. Most farmers are reluctant to use high-priced slow-release fertilizers due to cost considerations. Therefore, carbon-based slow-release fertilizers cannot be used on a large scale. At the same time, most of the polymer coating materials widely used in the market are non-degradable polymers, and the residue after application will damage the soil ...

AI Technical Summary

Problems solved by technology

However, the use of biochar to make slow-release fertilizers is rarely used in the market at present. Most farmers are reluctant to use high-priced slow-release fertilizers due to cost considerations. Therefore, carbon-based slow-release fertilizers cannot be used on a large scale. At the same time, most of the polymer coating materials widely used in the market are non-degradable polymers, and the residue after application will damage the soil structure.