Carbon-based slow release fertilizer utilizing wastes and preparation method of slow release fertilizer

Abstract

The invention discloses a carbon-based slow release fertilizer utilizing wastes. The carbon-based slow release fertilizer is prepared from raw materials in parts by weight as follows: 14-18 parts of rice straw, 24-26 parts of slaughter house wastes, 13-17 parts of rotten vegetable leaves, 4-6 parts of attapulgite, 5-9 parts of humic acid raw powder, 3-5 parts of a modified tapioca starch solution, 28-32 parts of marine product leftovers, 6-8 parts of urea, 4-5 parts of magnesium sulfate and 19-21 parts of biogas residues. A large quantity of waste materials such as the slaughter house wastes, the marine product leftovers and the like are used as preparation raw materials for the carbon-based slow release fertilizer, resources are reutilized, the production cost is reduced remarkably, soil nutrient can be supplemented after application of the fertilizer, and nutrient and water can be effectively preserved, so that the fertility of soil is improved, and the slow release fertilizer has a positive function on crop growth.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a carbon-based slow-release fertilizer utilizing waste 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. For...

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.