Studying on the isolation and system-taxonomy of actinomycetes in Xinjiang Tianshan mountain soil plays a significant role in keeping abreast of actinomycetes'distributing situation in this area.7 typical isolation medium had been used in isolating actinomycetes strains from the soil sample.Then actinomycetes strains belonging to 8 genera were obtained.In addition,the isolation effect was appraised.PCR-RFLP analysis that 16S rRNA genes of 20 strains of Streptomyces were digested with MseI,AluI,PstI and HhaI...