Abstract:

In order to analyze the influence on the growth of Rhodiola fastigiata in the Sehgyla mountains by the interaction of Rhodiola fastigiata with its rhizosphere microbes, this study was carried out. The microorganism from Rhodiola fastigiata rhizosphere soil and non-rhizospheric soil were isolated and cultured by the plate cultivation method with selective media. The amount of bacteria, actinomycete and fungi was counted, and the dominant strains were classified and identified by their morphology, growth and physiochemical characteristics. The results showed that: the amount of rhizosphere bacteria in per gram dried rhizosphere soil was 1.5×106-2.5×108, the amount of rhizosphere actinomycete in per gram dried rhizosphere soil was 2.3×104-1.4×105, the amount of rhizosphere actinomycete in per gram dried rhizosphere soil was 1.4×103-1.3×105, and their rhizosphere effects were 67.6, 42.4, 105.3, respectively. And the results indicated that the diversity of the dominant microbes from rhizospheric soil was stronger than the diversity of the ones from non-rhizospheric soil, and some of these rhizosphere microbs were the plant groth-promoting rhizobacteria. Research showed that the prominent rhizosphere effect of rhizosphere microbes of Rhodiola fastigiata and its plant grwoth-promoting rhizobacteria helped to enhance Rhodiola fastigiata’s adaptive abilities to plateau environment.