Sustained-release fertilizer taking biomass granular carbon as matrix and specially used for melon and preparation method of fertilizer

Abstract

The invention relates to a sustained-release fertilizer taking biomass granular carbon as a matrix and specially used for melon and a preparation method of the fertilizer. The method comprises the following step of: compounding granular carbon which is prepared from agricultural and forestry waste biomass such as corncob, peanut shells, rice husks and an edible fungus matrix and is taken as a matrix material with nitrogen, phosphorus, potassium and other nutrient elements which are necessary to the growth and development of the melon by using the multiple micropores and high adsorption capacity of the granular carbon and using bentonite or clay as a binder to prepare a granular biomass carbon-based sustained-release fertilizer special for the melon. The biomass granular carbon is black carbon powder granules (carbon black) formed after the biomass is subjected to incomplete combustion under the anoxic condition, has multiple characteristics similar to those of soil humus (humic acid), is high in nutrient and water adsorbing and retaining capacity, can stimulate crop growth, and is high in nitrogen, phosphorus and potassium sustained-release performance, so that the sustained-release fertilizer prepared from the biomass granular carbon can meet the requirement in the whole growth and development period of the melon after being applied at one time, has the characteristics of increasing soil fertility, improving a soil structure, achieving high efficiency and environment friendliness, and the like, and is wide in application prospect.

Description

[0001] technical field [0002] The invention belongs to the technical field of agricultural fertilizer production, and in particular relates to a special slow-release fertilizer for melons with biomass granular carbon as a substrate and a preparation method thereof. Background technique [0003] In melon production, fertilization is an important measure to ensure yield and quality. Nitrogen, phosphorus, and potassium are the three nutrients that melon absorbs the most, and they are relatively deficient in the soil and need to be supplemented by fertilization. At present, the chemical fertilizers used on melons are mainly quick-acting fertilizers, which dissolve quickly in the soil. If too much nitrogen fertilizer is applied at one time, the concentration of the soil solution will increase too much in a short period of time, which will easily lead to excessive plant growth in the early stage of growth, and delay ripening in the late stage of growth. Sugar content and vitami...

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Problems solved by technology

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