拮抗性放线菌的选择与鉴定从苗圃10—25厘米深处松苗根系分布较多的土层取样,用平板稀释法以淀粉氨培养基分离而得。将分离到的菌株接种到鱼汁培养基上,用琼脂切块法进行抗菌谱的测定。结果表明,在187个菌株中有25株对镰孢菌具有强烈的拮抗作用,根据其培养特征及生理生化等特性,绝大多数属于玫瑰红紫色组, Antagonistic actinomycetes selection and identification from the nursery 10-25 cm deep pine seedlings root more soil samples were taken by plate dilution method derived from amyl ammonia media derived. The isolated strains were inoculated into the juice culture medium, and the agar cut method was used to determine the antibacterial spectrum. The results showed that out of 187 strains, 25 strains had a strong antagonistic effect on Fusarium. Based on the characteristics of their culture and physiological and biochemical characteristics, most of them belonged to the rose-purple group,