Abstract:

This paper studied the variations of phenolic acids contents, microbes flora and enzyme activity in yam Rehmannia glutinosa rhizosphere soil and their relations. The results showed that the content of phenolic acids and the numbers of fungi, bacteria, actinomycetes had a prominent increase with the yam growing development.The mone fast of rootstalk growing rate, the mone distinct of increase tendency. While the number of bacteria in yam rhizosphere soil were about 80% all the time, and showed increase tendency. The enzyme activity of catalase, polyphenol oxidase,protease in rihzosphere showed increase tendency, and the variation of enzyme activity in sucrase, phosphatase, urease were contrary. The content of rhizosphere phenolic acids presented a prominent pertinence with the numbers of fungi, bacteria, actinomycetes and the enzyme activity of catalase, polyphenol oxidase, protease, phosphatase, urease in rhizosphere soil.