【摘要】 为选择合适的抑菌剂和适宜的浓度来防治不同地区的烟草青枯病,采用平板菌落计数法测定了新型抑菌剂K系(K1、K2、K3)对我国46个不同地区烟草青枯菌的抑制率,同时比较了K系抑菌剂与农用链霉素的抑菌效果。结果表明:1)100 mg/L K1对印江等27个县市,100 mg/L K2对遵义县等30个县市,50 mg/L K3对莒县等25个县市,254.5 mg/L农用链霉素对保山等28个县市青枯菌的抑制率达100%。2)50 mg/L K1对金沙等15个县市,50 mg/L K2对仁怀等21个县市,50 mg/L K3对江口等23个县市的青枯菌抑制率显著高于同浓度农用链霉素;100 mg/L K1对洋溪乡等,100 mg/L K2对江口等青枯菌的抑制率显著高于同浓度农用链霉素。更多还原

【Abstract】 Inhibition effect of K-series(K1,K2 and K3) of a novel anti-bacterial agent on nationwide strains of tobacco Ralstonia solancearum collected from 46 districts in China was assessed by suspension-dilution and plate-count method,and compared with that of the agri-streptomycin.Results indicated that 1) 100% inhibition was obtained by K1(100 mg/L) in Yinjiang and the other 26 counties,by K2(100 mg/L) in Zunyi and the other 29 counties,by K3(50 mg/L) in Juxian and the other 24 counties,and by agri-streptomycin(254.5 mg/L) in Baoshan and the other 27 counties.2) With same concentration,such as 50 mg/L or 100 mg/L,K-series of the anti-bacterial agent had significantly higher inhibition ratio against Ralstonia solancearum than agri-streptomycin in many countries.更多还原