Influence of water environment on the growth of Bacillus licheniformis was studied. The results showed that the growth of Bacillus licheniformis was most favorable at 37 C, pH 5.0 (or pH 9.0). A certain amount of NO3^--N could accelerate the growth of Bacillus licheniformis. The optimum NO3^--N concentration for Bacillus licheniformis growth was 46.7 mg/L at 0.1 g/L inoculation. HPO4^2- was utilized at a slow rate during the growth of Bacillus licheniformis. After 6 days of cultivation, the HPO4^2- concentratio...