2种双酰胺类杀虫剂对东方黏虫的室内生物活性测定及田间防效  

Laboratory bioactivity and field control effect of two dicamide insecticides to Mythimna separata

作　　者：陈冉 高梦雪 雒珺瑜[2,3] 王丽 朱香镇 张开心 李东阳 高雪珂 姬继超 崔金杰 马德英[1] CHEN Ran;GAO Mengxue;LUO Junyu;WANG Li;ZHU Xiangzhen;ZHANG Kaixin;LI Dongyang;GAO Xueke;JI Jichao;CUI Jinje;MA Deying(Cotton Engineering Research Center,Ministry of Education,College of Agronomy,Xinjiang Agricultural University,Urumqi 830000,China;State Key Laboratory of Cotton Biology,Cotton Research Institute,Chinese Academy of Agricultural Sciences,Anyang 455000,Henan,China;Western Agricultural Research Center,Chinese Academy ofAgricultural Sciences,Changji 831100,Xinjiang,China;State Key Laboratory ofCotton Biology,College of Life Sciences,Henan University,Kaifeng 475004,Henan,China)

机构地区：[1]新疆农业大学农学院棉花教育部工程研究中心,乌鲁木齐830000 [2]中国农业科学院棉花研究所棉花生物学国家重点实验室,河南安阳455000 [3]中国农业科学院西部农业研究中心,新疆昌吉831100 [4]河南大学生命科学学院棉花生物学国家重点实验室,河南开封475004

出　　处：《农药》2024年第1期67-72,共6页Agrochemicals

基　　金：国家棉花产业技术体系(CARS-15-21)。

摘　　要：[目的]为有效防控重要农业害虫东方黏虫(Mythimna separata),筛选适用农药及适用剂量,指导田间科学用药。[方法]在室内采用表面涂抹法用不同稀释倍数的2种酰胺类杀虫剂溴虫氟苯双酰胺与四唑虫酰胺对东方黏虫3龄幼虫进行生物活性测定,在室外采用喷雾法评价溴虫氟苯双酰胺与四唑虫酰胺对东方黏虫3龄幼虫的田间防效。[结果]室内生物活性测定表明:溴虫氟苯双酰胺处理24、48、72 h的LC_(50)值分别为0.312、0.161、0.137 mg/L,四唑虫酰胺处理24、48、72 h的LC_(50)值分别为2.224、1.310、0.871 mg/L。溴虫氟苯双酰胺对东方黏虫的生物活性优于四唑虫酰胺。田间药效试验表明:溴虫氟苯双酰胺、四唑虫酰胺在用量29.25、45.00 g a.i./hm^(2)水平下,药后1 d防效为71.34%、60.55%;药后7 d防效为100%、92.86%。[结论]溴虫氟苯双酰胺具有较好的速效性,可以用作应急防治东方黏虫幼虫的推荐药剂。四唑虫酰胺发挥作用较为缓慢,随着时间增加死亡率升高。[Aims]Suitable pesticides with the appropriate dosages were screened to drive the scientific use of pesticides in the field for the effective control of Mythimna separata,a significant agricultural pest.[Methods]To determine the biological activity of the 3rd instar larvae of the oriental armyworm,the amide insecticides broflanilide and tetraniliprole were used with different dilution ratios by using the surface coating method indoors.In addition,the field control effect of broflanilide and tetraniliprole on the 3rd instar larvae of the oriental armyworm was determined by using the spray method outdoors.[Results]The laboratory bioactivity assay showed that the LC_(50) values of broflanilide treatment at 24,48 and 72 h were 0.312,0.161 and 0.137 mg/L,respectively,and the LCso values of tetraniliprole treatment at 24,48 and 72 h were 2.224,1.310 and 0.871 mg/L,respectively.The biological activity of broflanilide against oriental armyworm was better than that of tetraniliprole.The field efficacy test showed that the control efficacy of broflanilide and tetraniliprole were 71.34%and 60.55%with active ingredient of 29.25 and 45.00 g a.i./ha,respectively.On day 7 after treatment,the prevention effect reached to 100%and 92.86%,respectively.[Conclusions]The virulence of broflanilide is quick-acting and can be used as a recommended agent for emergency control of oriental armyworm larvae.The virulence of tetraniliprole was relatively slow,and the mortality rate increased as time prolongs.

关 键 词：东方黏虫 溴虫氟苯双酰胺 四唑虫酰胺 室内生物活性 田间药效 

分 类 号：S482.3[农业科学—农药学]