Study on microbe group of Stylosanthes guianensis root and rhizosphere in Mao Village of Guilin

Qualitative research and quantitative analysis are given to microbial diversity in root and rhizosphere of Stylosanthes guianensis in karst area and nonkarst area. The results show that the trends in karst area are similar to that in nonkarst area except actinomycetes compared with the three kinds of microorganism. Which are nonkarst area karst area, and rhizosphere leteral root taproot. The amount of rhizosphere soil bacteria in nonkarst area is up to 7.3107/g dry soil, and 2.5107/g dry soil in karst area. When viewed on species abundance from root and rhizosphere, the result also is nonkarst area karst area. As to the taproot, the species of fungi in nonkarst area is 12 and 6 in karst area. Strain identification shows that dominant strain composition of root and rhizosphere in nonkarst area has similarity, while different in karst area.