第 53 卷第 3 期Vol. 53 No. 3
2023 年 6 月Jun 2023

所属栏目:农药及中间体

六种杀虫剂对玉米草地贪夜蛾的室内毒力及田间防效
吴晓峰1,孔玄庆2,3,张艳峰4,欧晓明2,3*,黄至畅2,3,李成业1,蒋何雪4,金晨钟5 (1. 永州市农业科学研究所,湖南 永州 425100;2. 湖南化工研究院有限公司 国家农药创制工程技术研究中心,湖南 长沙 410014;3. 农用化学品湖南省重点实验室,湖南 长沙 410014;4. 永州市农业综合服务中心,湖南 永州 423000;5. 湖南人文科技学院,湖南 娄底 413800)
摘 要:为了筛选出防治玉米草地贪夜蛾的高效农药,采用浸叶法和《草地贪夜蛾防控技术规范》推荐的方法,对常见的六种杀虫剂分别进行室内毒力测定和田间防效评价。试验结果表明,11.6%甲维盐·氯虫苯甲酰胺悬浮剂、25%氯虫苯甲酰胺·茚虫威悬浮剂、10%氯虫苯甲酰胺·虱螨脲悬浮剂、12%阿维·虫螨腈水乳剂、25%阿维·螺虫乙酯悬浮剂、25%呋虫胺·唑虫酰胺悬浮剂对草地贪夜蛾3龄幼虫的半致死浓度(LC50)分别为0.486、0.995、1.024、2.147、4.573、5.761 mg/L;田间防效试验中,药后7 d,11.6%甲维盐·氯虫苯甲酰胺悬浮剂在用量为20、40 g a.i./hm2时的防效均超过90%,25%氯虫苯甲酰胺·茚虫威悬浮剂在用量为60 g a.i./hm2下的防效也较好,为92.73%,25%阿维·螺虫乙酯悬浮剂和25%呋虫胺·唑虫酰胺悬浮剂在低用量处理组中防效较差,剩余其他各处理的防效均超过80%。建议在草地贪夜蛾的田间防治中优先使用11.6%甲维盐·氯虫苯甲酰胺悬浮剂,且与25%氯虫苯甲酰胺·茚虫威悬浮剂、10%氯虫苯甲酰胺·虱螨脲悬浮剂、12%阿维·虫螨腈水乳剂等药剂轮用。
关键词:农药;草地贪夜蛾;防效
中图分类号:S433.4  文献标识码:A  文章编号:1009-9212(2023)03-0020-04
Toxicities and Field Control Efficacy of Six Insecticides Against Spodoptera frugiperda
WU Xiao-feng1, KONG Xuan-qing2,3, ZHANG Yan-feng4, OU Xiao-ming2,3*, HUANG Zhi-chang2,3, LI Cheng-ye1, JIANG He-xue4, JIN Chen-zhong5 (1. Yongzhou Institute of Agricultural Science, Yongzhou 425100, China; 2. National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry, Co., Ltd., Changsha 410014, China; 3. Agrochemical Key Laboratory of Hunan Province, Changsha 410014, China; 4. Agricultural Comprehensive Service Center of Yongzhou, Yongzhou 423000, China; 5. Hunan University of Humanities, Science and Technology, Loudi 413800, China)
Abstract:In order to screen out effective insecticides for controlling the fall armyworm Spodoptera frugiperda, toxicities and field control efficacy of six insecticides were tested against based on leaf-dipping method and “Technical Specification of Control for Fall Armyworm”. Experimental results showed that the LC50 of 11.6% emamectin benzoate·chlorantraniliprole SC, 25% chlorantraniliprole·indoxacarb SC, 10% chlorantraniliprole·lufenuron SC, 12% abamectin·chlorfenapyr EW, 25% abamectin·spirotetramat SC and 25% dinotefuran·tolfenpyrad SC to were 0.486、0.995、1.024、2.147、4.573、5.761 mg/L, respectively. At seven days after application, the control efficacyof 11.6% emamectin benzoate·chlorantraniliprole SC at 20 and 40 g a.i./hm2 were more than 90%, and 25% chlorantraniliprole·indoxacarb SC at 60 g a.i./hm2 was 92.73%, and 25% abamectin·spirotetramat SC and 25% dinotefuran·tolfenpyrad SC had a poor control efficacy. The remaining insecticide treatments exceeded 80% control efficacy. Therefore, it is recommended that 11.6% emamectin benzoate·chlorantraniliprole SC should be applied in preference to control the fall armyworms and rotate with 25% chlorantraniliprole·indoxacarb SC, 10% chlorantraniliprole·lufenuron SC and 12% abamectin·chlorfenapyr EW.
Key words:pesticides; Spodoptera frugiperda; control effect
基金项目:永州市2021年度指导性科技计划项目(2021-YZKJZD-026)。
作者简介:吴晓峰(1989—),男,湖南永州人,农艺师,硕士,研究方向:农业推广(E-mail:758969366@qq.com)。
联 系 人:欧晓明,研究员,博士,研究方向:植物保护及农药残留(E-mail:xmouhn@163.com)。
收稿日期:2023-06-13