A kind of biochar for tobacco field soil improvement and preparation method thereof

Abstract

The invention relates to charcoal for tobacco field soil improvement and a preparation method of the charcoal, and belongs to the technical field of agricultural fertilizers. The charcoal for tobacco field soil improvement comprises a production raw material of distillers' grains. The preparation method specifically comprises the following steps: performing mixing fermentation on one or more raw materials of sorghum, rice, sticky rice, wheat, corn and the like to brew wine; putting obtained distillers' grains into a calcining furnace for calcining so as to obtain a calcined product; performing water spraying washing on the obtained calcined product, thereby obtaining a charcoal product. As the distillers' grains are adopted as a raw material, and a specific preparation method is utilized, the obtained product is good in practicability, high in carbon content and rich in trace nutrient element, the yield of tobacco can be effectively increased, the quality of the tobacco and the fertilizer utilization efficiency can be effectively improved, the physical and chemical properties of soil of a tobacco field can be remarkably improved, the ratio of carbon to nitrogen in the soil of the tobacco field can be remarkably increased, the soil porosity can be improved, the soil capacity can be reduced, the maximum water-holding capacity of the soil can be increased, the microorganism environment of the soil can be improved, and in the application process, the charcoal is applied together with a base fertilizer for planting the tobacco, so that the labor is not increased.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and in particular relates to a biochar used for soil improvement in tobacco fields and a preparation method thereof. Background technique [0002] China is a large agricultural country with serious shortage of agricultural resources. It is an indisputable fact that over-exploitation has led to ecological imbalance and the deterioration of environmental pollution. Since entering the 21st century, people have been gradually affected by various factors such as "environment, energy crisis, and food", and the situation has become more and more serious. Agricultural production practice and a large number of studies have shown that soil physical and chemical properties have become the main reason for limiting crop yield and quality. Effectively improving the physical and chemical properties of farmland soil, improving crop yield and quality, and improving fertilizer use efficiency are c...

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Problems solved by technology

[0004] Although a variety of biochars have been developed using various biomass raw materials, most of them use crop straws, forest products and other wastes as direct raw materials, and there are large differences in the main components such as cellulose, hemicellulose and lignin. , resulting in unstable biochar product composition content and physical and chemical properties; in crop production, simply applying various biochars to the soil in the form of fertilizer has no effect on improving the physical and chemical properties of farmland soil and promoting crop production and quality. Obviously; in the production of flue-cured tobacco, simply refer to the biochar used in other crops, ignoring the nature of the biochar itself and the individual needs of the tobacco field soil, and increase the input without seeing the increase in yield and efficiency of flue-cured tobacco; the types of biochar used in flue-cured tobacco production are diverse and urgent The physical and chemical properties of the soil in the tobacco field need to be improved to meet the needs, and the special biochar fertilizer product developed by using biochar has the nutrients required by flue-cured tobacco and is aimed at the growth of tobacco field soil and flue-cured tobacco.

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