This study adopted Chinese Cabbage varieties with different resistens, and determined relation of soft rot bacteria content in petiole and Peroxidase activity, Polphenol oxiclase activity,celllulase activity, sucrase activity, cellulose content and the variration of soluble sugar content , at the same time, including determining the variaration of six physiological biochemical indexes around inoculation in seedling time .And through making a correlated analysis of disease resistance and the variaration of s...