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.