The invention discloses a tobacco active biological organic-inorganic special
fertilizer and a preparation method thereof. The tobacco active biological organic-inorganic special
fertilizer is prepared by the following steps of: selecting functional microbial strain and adding the following materials in percentage by weight: 50-70 percent of
rapeseed meal, 20-40 percent of
sesame seed meal and 10-20 percent of bean
meal; mixing, then performing
solid fermentation and performing enzymolysis on crude
protein in cake meal to form a biological
fermentation cake
fertilizer with bioactive
free amino acid and active
small peptide; and then uniformly mixing with an activator and an
inorganic fertilizer and chelating to prepare the tobacco active biological organic-inorganic special fertilizer. The tobacco active biological organic-inorganic special fertilizer is characterized by comprising the following raw materials in percentage by weight: 8-12 percent of activator, 20-30 percent of biological
fermentation cake fertilizer and 55-75 percent of
inorganic fertilizer. According to the invention, a method of combining an
organic fertilizer with an
inorganic fertilizer and combining
nitrate nitrogen with
ammonium nitrogen is adopted, the biological fermentation cake fertilizer with the
rapeseed meal,
sesame seed meal and bean meal as carriers is added, and the raw materials are mixed with the activator and the like to prepare a high-efficiency active fertilizer. The fertilizer has the characteristics of high
nutrition,
high activity and high efficiency; the tobacco
plant root environment can be improved, the
root system activity is enhanced, the leaf growth is promoted, the requirements of tobacco
plant development on mineral
nutrition are fully met, the yield of the tobacco
plant and the quality of the
tobacco leaf can be obviously improved, the environment
pollution is reduced, and the soil is improved.