The study was carried out on the pathogenic bacterial soft rot isolated from tulip bulb. Observation was made on the morphology of pathogenic bacteria staining reaction, optimum temperature and pH of growth and physiological and biochemical properties. The results show it is very similar to Erwinia carotovoa var. carotovora Dye. in properties, and can infect host plants such as chinese cabbage, pepper, potato, and onion. So the pathogeni...