40%呋虫胺可溶粒剂对家蝇的室内防治效果研究

Control efficacy of dinotefuran 40%SG against domestic fly

为了明确40%呋虫胺可溶粒剂(SG)对家蝇成蝇的室内防治效果,采用滞留喷洒、空间喷雾、模拟现场试验3种方法对家蝇成蝇进行室内药效测定。滞留喷洒试验结果表明:呋虫胺在不吸收面和半吸收面的持效时间较长,在药效试验国家标准规定的最长时间内,其防治效果仍保持在90%以上,在吸收面的持效时间较短,第45天试虫死亡率低于60%;空间喷施呋虫胺,喷雾3 min后对家蝇出现击倒效果,击倒试虫24 h的死亡率达到100%。模拟现场试验中,施药1 h后试虫击倒率为93%,24 h试虫死亡率为100%。作为防治成蝇的有效杀虫剂,40%呋虫胺可溶粒剂可以采用滞留喷洒方式进行室内施药,也可以采用复配方式增加喷雾药效。

In order to determine the control efficacy of dinotefuran 40%SG against domestic fly,laboratory efficacies were evaluated by residual spray,space spray and analogous site test.The results of residual spray test showed that effective periods of dinotefuran 40%SG in the non-absorbing and semi-absorbing surfaces were long,and the control efficacies were more than 90%within the maximum time.The effective period of dinotefuran 40%SG in the absorbing surface was only 30 days and the mortality of the forty-fifth day was less than 60%.When application by space spray,the fly was knocked down at the third minute after the application and the 24-hour mortality rate was 100%.In the analogous site test,the one-hour knockdown rate was 93%and 24-hour mortality rate was 100%.As an effective insecticide against adult fly,dinotefuran 40%SG could be applied by residual spray or synergistic insecticide mixtures.