Abstract:
Cylindrocaipon destructans is the primary pathogen of Panax notoginseng root rot.In order to find an ideal biological control method for this fungus,antifungal bacteria were screened from soil in which P. notoginseng is cultivated,and three strains Y-4-70,X-5-15 and X-5-32 were detected with obvious bacteriostasis.Then different exacts of fermentation liquid of X-5-15 are tested for their antifungal activity and it is found that the exact with petroleum has the most highest antifungal activity against this fungus.