Specific sustained-release fertilizer for yam by using biomass granular carbon as matrix and preparation method thereof

Abstract

The invention discloses a special sustained-release fertilizer for yam by using biomass granular carbon as matrix and a preparation method thereof. Granular carbon prepared from corn cob, peanut hulls, rice hulls, edible fungus substrate and other agricultural waste biomasses is used as a matrix material, and is compounded with nitrogen, phosphor, potassium and other nutritional elements which are necessary to growth and development of yam by utilizing the microporosity and strong adsorptivity of the granular carbon to prepare the granular-biomass-carbon-based special sustained-release fertilizer for yam. The biomass granular carbon used in the invention is black biomass granular carbon particles formed after agriculture waste biomass is incompletely combusted in a low-oxygen condition, has multiple properties similar to soil humus, has strong capacities of adsorbing and maintaining nutrition and moisture, and can be used for stimulating crop growth with good sustained release performance to nitrogen, phosphor and potassium, so that the requirement of yam for nutritions in the whole growing period can be effectively supplied when the prepared sustained release fertilizer is applied once. Furthermore, the fertilizer has the characteristics of increasing the soil productivity, improving the soil structure along with high efficiency and environmental friendliness, and the like, and is advantageous to large-scale popularization and application in yam production.

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 Chinese yam with biomass granular carbon as a substrate and a preparation method thereof. Background technique [0003] In the cultivation and management of yam, rational fertilization is an important measure related to yield and quality. In the early stage of yam growth, an appropriate amount of available nitrogen fertilizer is provided, which is conducive to the growth of vines. Entering the prime growth period of tubers, attention should be paid to the combined application of nitrogen, phosphorus and potassium, especially the application of potassium fertilizers to promote tuber expansion and material accumulation. In the later stage of growth, the application amount of nitrogen fertilizer should be controlled to prevent the vines from growing excessively. However, the fertilizers used in y...

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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.