棉苗炭疽病是棉花的主要病害之一,我省在棉花播种季节经常阴雨连绵,容易遭受寒流袭击。在低温高湿的形况下,棉苗炭疽病为害严重,往往造成死苗断垄现象,对棉花早播全苗影响极大。为了认真落实毛主席“备战、备荒、为人民”的伟大战略方针,我们筛选出对棉苗炭疽病具有良好的防病效果和壮苗作用的“878”抗生菌剂,在目前剧毒农药——有机汞杀菌剂限制生产和使用的情况下,应用微生物防治棉花苗期病害是一个有效的新途径。 “878”菌种是我所从武昌邻区棉田土壤中分离所得,命名为黄褐色球胞放线菌 Cottonseed anthracnose is one of the main diseases of cotton. Our province often rains in the cotton sowing season and is vulnerable to the cold spell. In the condition of low temperature and high humidity, anthracnose of cotton seedlings is seriously damaged, which often results in the phenomenon of dead seedlings breaking the ridge and has a great impact on the early seedlings of cotton. In order to conscientiously implement Chairman Mao’s great strategic guideline of “preparing for war, preparing for war and for the people,” we screened “878” antibacterial agents that have a good disease-preventing effect and strong seedling effect on anthracnose in cotton seedlings. At present, - Organic mercury fungicide production and use restrictions on the case, the application of microbial control of cotton seedling disease is an effective new way. The “878” strain was isolated from soil in cotton fields in the neighboring area of ​​Wuchang and named as Actinomyces