Special slow-release fertilizer taking biomass granular carbon as matrix for shallots and preparation method thereof

Abstract

The invention discloses a special slow-release fertilizer taking biomass granular carbon as a matrix for shallots and a preparation method thereof. Granular carbon prepared from agricultural abandoned biomass such as corncobs, peanut shells, rice husks and edible mushroom matrixes, taken as a matrix material, is compounded with nitrogen, phosphorus, potassium and other nutrient elements essential to the growth and development of the shallots by utilizing the microporous character and strong adsorption capacity of the granular carbon, so that the special slow-release fertilizer taking the biomass granular carbon as the matrix for the shallots is prepared. According to the invention, the biomass granular carbon is black biomass granular carbon particles formed after incomplete combustion of the agricultural abandoned biomass under a hypoxic condition, has various properties similar to those of soil humus, is very strong in capacity of adsorbing and maintaining nutrients and moisture, and furthermore, and has an effect of stimulating the growth of crops and a good slow-release performance for the nitrogen, phosphorus and potassium; the slow-release fertilizer prepared in such a way can effectively meet the requirements of the shallots for nutrients in the whole growth period after being applied once; and in addition, the special slow-release fertilizer has the characteristics of enhancing the soil fertility, improving the soil structure, being efficient and environmentally-friendly, and the like, thereby beneficial to large-scale popularization and application in shallot production.

Description

[0001] technical field [0002] The invention belongs to the technical field of agricultural fertilizer production, in particular to a special slow-release fertilizer for scallions using biomass granular carbon as a substrate and a preparation method thereof. Background technique [0003] In green onion production, rational fertilization is an important measure to ensure yield and quality. Green onions belong to the string-shaped fibrous root system, and the root branching and regeneration ability is weak. When the root system that has occurred is cut off, the broken root system cannot produce lateral roots. Therefore, the damage to the root system should be minimized in the cultivation and management of green onions. In terms of fertilization, it is emphasized to apply more organic fertilizers with long-term fertilization effects and comprehensive nutrition to provide better nutrition and reduce the damage to the root system caused by the frequency of fertilization. But wi...

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Problems solved by technology

In the burning season, there have been many incidents where flights could not land and highways were forced to close due to the smog in the sky, which not only wasted a lot of precious resources, but also brought serious pollution to the environment.