OBJECTIVETo study the effects of Arbuscular Mycorrhizae on cultivated Atractylodes lancea.

METHODPot experiment of A. lancea, with (code as AM) or without (code as CK) Glomus mosseae (GM) was conducted 5 times respectively, then the biomass, essential oil, and soil nutrition, soil organism, soil microbial were detected after A. lancea were harvested.

RESULT(1) Mycorrhizal dependency of A. lancea was 245%, and height of individuals, numbers of leaves, leaf area, biomass of A. lancea were all higher in AM than in CK (P < 0.05). (2) GC-MS analysis with cluster analysis and principal components analysis showed that there were no differences in essential oil of A. lancea between AM and CK. (T3) Total N, available N, available P and available K in AM soil were all lower than in CK soil. (4) GC-MS analysis showed organic matters changed differenly in AM soil and CK soil, components 5,6 in AM soil were higher than that in CK soil, but component 9, 10, 11 were lower in AM soil than that in CK soil. (5) Biolog detect showed AWCD of AM soil microbe were higher than that of CK soil throughout the incubation, and AWCD of the former was 0.66, and the later was 0.46 after 192 h incubation. and t-test showed, Shannon seven indices and McIntosh'seven indices were same both at 72 h and 192 h, and diversity indices of Shannon and McIntosh were also same at 72 h, but AM soil microbe were higher than CK soil microbe at 168 h (P < 0.05).

CONCLUSIONAM could promote nutrition uptake, improve the function diversity and activity of microbe in rhizosphere of A. lancea, influence the composition of the organic matter, that lead the growth of A. lancea, but not to the quality.