聚六亚甲基双胍盐酸盐与氟环唑对水稻稻曲病菌的联合毒力测定  

Determination of Combined Effects of Polyhexamethylene Biguanidine Hydrochloride and Epoxiconazole on Ustilaginoidea virens

作　　者：吴斌[1] 姜珊珊[1] 张眉[1] 徐德坤 王升吉[1] 辛相启[1] 

机构地区：[1]山东省农业科学院植物保护研究所,山东济南250100 [2]临沂市植物保护站,山东临沂276000

出　　处：《山东农业科学》2018年第2期108-111,共4页Shandong Agricultural Sciences

基　　金：国家重点研发计划项目"粮食丰产增效科技创新"(2016YFD0300705);山东省重点产业关键技术创新工程项目(2016CYJS03A01-4);山东省农业科学院农业科技创新工程项目(CXGC2016A09-监测预警)

摘　　要：本研究采用菌丝生长速率法测定了聚六亚甲基双胍盐酸盐(polyhexamethylene biguanidine hydrochloride)与氟环唑(epoxiconazole)混配对水稻稻曲病菌(Ustilaginoidea virens)的毒力,旨在明确二者混配对水稻稻曲病菌的联合作用类型及最佳配比。结果表明,聚六亚甲基双胍盐酸盐、氟环唑对水稻稻曲病菌的EC_(50)分别为44.111、1.743 mg·L^(-1),氟环唑对水稻稻曲病菌的室内毒力活性明显高于聚六亚甲基双胍盐酸盐。聚六亚甲基双胍盐酸盐与氟环唑25:1配比表现为相加作用;5:1、10:1、15:1和20:1四个配比表现为增效作用,其中,配比为10:1和15:1的SR分别为1.64和1.66,增效作用明显。This study was conducted to clarify the co-effects of mixed polyhexamethylene biguanidine hydrochloride( PHMB) and epoxiconazole on Ustilaginoidea virens,and to find out their best mixed ratio by mycelium growth rate method. The results showed that the EC_(50) of PHMB and epoxiconazole to U. virens were 44. 111 and 1. 743 mg·L^(-1),respectively,which indicated that the indoor toxicity of epoxiconazole to U. virens was more active compared with PHMB. In the 5 different mixing ratios of PHMB and epoxiconazole,the ratio of 25:1 could do additively,and the ratio of 5:1,10 :1,15 :1 and 20 :1 had synergistic effect on U. virens; among which,the ratio of 10:1 and 15:1 showed the strongest synergistic effect with the synergistic coefficients as 1. 64 and 1. 66,respectively.

关 键 词：聚六亚甲基双胍盐酸盐 氟环唑 水稻稻曲病菌 联合毒力 增效作用 

分 类 号：S435.111.49[农业科学—农业昆虫与害虫防治]