Carbon-based slow-release fertilizer with development promoting function and preparation method of fertilizer

Abstract

The invention discloses a carbon-based slow-release fertilizer with a development promoting function. The carbon-based slow-release fertilizer is prepared from raw materials in parts by weight as follows: 26-28 parts of cottonseed meal, 17-19 parts of rice straw, 14-16 parts of Chinese medicine residues, 5-8 parts of attapulgite, 20-24 parts of fishpond sediment, 6-7 parts of raw humic acid powder, 4-6 parts of a modified tapioca starch solution, 7-9 parts of diammonium phosphate, 4-5 parts of potassium nitrate and 8-10 parts of perlite powder. The raw materials of the carbon-based slow-release fertilizer are reasonably matched, the fertilizer can meet the requirement for nutrient including nitrogen, phosphorus and potassium by crops and is rich in medium trace elements, the field fertility can be further improved by means of addition of fermentation of the fishpond sediment and the Chinese medicine residues, barren land caused by long-time use of chemical fertilizer is improved, sufficient use of the nutrients can be guaranteed by means of the excellent slow release performance of the fertilizer, resource waste caused by overnutrition is avoided, nutrient absorption by crop root systems is promoted through improvement of the soil permeability by the perlite powder, and the carbon-based slow-release fertilizer has a positive effect on development of crops.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a growth-promoting 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 structure. Fo...

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.