The invention discloses lysinibacillus, lysinibacillus high-density
fermentation liquor and a preservation method of the lysinibacillus high-density
fermentation liquor. The
lysine bacillus disclosed by the invention can be used for efficiently synthesizing
auxin indoleacetic acid (IAA) and has good
saline-alkaline resistance, and tests show that the strain and
fermentation liquor thereof have a remarkable promoting effect on
plant growth; by optimizing the fermentation process of the lysinibacillus, the
thallus density and the IAA yield can be remarkably improved, the high-density fermentation liquor of the lysinibacillus can be obtained, the unification of high-density fermentation and high-activity metabolites is realized, the process is stable, and the
repeatability is good. The lysinibacillus high-density fermentation liquor is further subjected to special treatment and is matched with a specific composite protective agent, so that the
vitality of thalli can be effectively maintained, the normal-temperature storage life of the fermentation liquor is remarkably prolonged, and the problems of short
shelf life and poor storage and transportation stability of a liquid microbial inoculum are solved.