对从北方滨海盐碱土中分离到的几株硅酸盐细菌(室内编号B44、B47、B73、B74、B75),以及对照菌株胶冻样芽孢杆菌(室内编号B0)进行了形态学和生理生化特征研究。这些菌株均为革兰氏阴性大杆菌,周生鞭毛,产芽孢和丰厚的荚膜,菌落透明隆起,粘性强;过氧化氢酶试验阳性,能水解明胶,M.R试验阳性,V.P阴性,不产生吲跺。除对照菌株B0外,都能在pH值为9.0的培养条件下生长,能耐受3%以上的NaC l浓度。 Several strains of silicate bacteria (B44, B47, B73, B74 and B75) isolated from coastal saline-alkali soil in the north of China and the control strain of Bacillus gelatinase (indoor code B0) were subjected to morphological and physiological biochemical Characteristic research. These strains are Gram-negative bacilli, peritoneal flagella, spores and generous capsule, colonial transparent uplift, strong viscosity; catalase test positive, can hydrolyze gelatin, MR test was positive, VP negative, does not produce Indole. Except for the control strain B0, grew at a culture pH of 9.0 and was able to tolerate NaC I concentrations above 3%.