【摘要】 [目的]研究氯氟氰虫酰胺对棉铃虫的毒力和田间药效。[方法]采用浸渍法,测定氯氟氰虫酰胺对棉铃虫的室内活性,并进行田间药效试验。[结果]氯氟氰虫酰胺对棉铃虫的毒力LC50值为0.145 mg/L,与氟苯虫酰胺、氯虫苯甲酰胺相当,高于高效氯氰菊酯。田间试验结果表明,药后3~10 d,在45~60 g a.i./hm2时,20%氯氟氰虫酰胺悬浮剂对棉铃虫的杀虫、保蕾和保顶防效均可达90%以上,与氟苯虫酰胺、氯虫苯甲酰胺相当,高于高效氯氰菊酯。[结论]氯氟氰虫酰胺对棉铃虫具有良好的室内生物活性和田间防效,可应用于防治棉铃虫。更多还原

【Abstract】 [Aims]The aim of this study is to evaluate the toxicity and the field efficacy of cyhalodiamide against Helicoverpa armigera.[Methods]The toxicity of cyhalodiamide against H.armigera was tested by leaf-dipping method,and field trial was carried out.[Results]The LC₅0 value of toxicity against H.armigera was 0.145 mg/L,almost equivalent to that of flubendiamide and chlorantraniliprole,higher than that of beta cypermethrin.The control efficacy against H.armigera 3-10 d after treatment was above 90%at 45-60 g a.i./ha,equivalent to that of flubendiamide and chlorantraniliprole,higher than that of beta cypermethrin.[Conclusions]Cyhalodiamide has good bioactivity and field efficacy against H.armigera,and can be sprayed to control H.armigera.更多还原