| 绿僵菌油悬浮剂与减量化学农药联用对冬玉米草地贪夜蛾的防控效果 |
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| 引用本文： | 徐翔,杨淞杰,李维强,衡晓蓉,尹勇.绿僵菌油悬浮剂与减量化学农药联用对冬玉米草地贪夜蛾的防控效果[J].中国生物防治学报,2020,36(4):530-533. |
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| 作者姓名： | 徐翔 杨淞杰 李维强 衡晓蓉 尹勇 |
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| 作者单位： | 1. 四川省农业农村厅植物保护站, 成都 610041;2. 攀枝花市农业农村局植物保护站, 攀枝花 617000;3. 米易县农业农村局植保站, 米易 617200 |
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| 基金项目： | 国家公益性行业科研专项（201203036） |
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| 摘 要： | 杀虫真菌农药安全性高，不易产生抗药性但速效性不足，而化学农药速效性好，大量使用会导致抗性产生。按照化学农药减量原则，采用绿僵菌制剂与噻虫嗪或氯虫苯甲酰胺减量联用方法进行田间防控试验。试验结果显示金龟子绿僵菌对草地贪夜蛾Spodoptera frugiperda（J.E.Smith）的速效性虽然低于化学药剂组，但持续防控明显优于化学药剂效果。在施用化学农药参考用量的50%时，联用药剂在5、15 d时，草地贪夜蛾幼虫防效得以保持甚至更优。25 d后，防效可分别达到82.60%、77.20%。金龟子绿僵菌与减量化学农药联用，防效优于单独使用金龟子绿僵菌的67.40%。冬玉米茎秆基部喷洒绿僵菌油悬浮剂可以有效感染草地贪夜蛾老熟幼虫/茧蛹，使其带菌入土，助力草地贪夜蛾的绿色防控，降低越冬繁殖地田间虫口基数。
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| 关 键 词： | 金龟子绿僵菌 持续防控 草地贪夜蛾 |
| 收稿时间： | 2019-02-15 |
Control Spodoptera frugiperda (J. E. Smith) in Winter Corn Using the Combination of Metarhizium anisopliae Oil Suspension and Reduced Chemical Pesticide |
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| XU Xiang,YANG Songjie,LI Weiqiang,HENG Xiaorong,YIN Yong.Control Spodoptera frugiperda (J. E. Smith) in Winter Corn Using the Combination of Metarhizium anisopliae Oil Suspension and Reduced Chemical Pesticide[J].Chinese Journal of Biological Control,2020,36(4):530-533. |
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| Authors: | XU Xiang YANG Songjie LI Weiqiang HENG Xiaorong YIN Yong |
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| Institution: | 1. Plant Protection Station of Sichuan Provincial Department of Agriculture and Rural Affairs, Chengdu 610041, China;2. Plant Protection Station, Panzhihua Agriculture and Rural Bureau, Panzhihua 617000, China;3. Plant Protection Station of Miyi County Agriculture and Rural Bureau, Miyi 617200, China |
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| Abstract: | Fungal microbial pesticides are characterized by high safety, low possibility of resistance and slow action. The chemical pesticides are of quick action and high possibility of resistance. Field trails for control of fall armyworm were conducted with combination of oil suspension Metarhizium anisopliae and reduced dosages of thiamiethonxam and chlorantraniliprole. Metarhizium anisopliae showed slower action against fall armyworm than the chemical pesticides, but showed higher sustainable control than the chemical pesticides. In field trails with combined application of M. anisopliae and the two chemical pesticides under a reduced dosage of 50%, the control was maintained or even better at 5 day post application (dpa) and 15 dpa. The control was 82.6% and 77.2%, respectively, at 25 dpa for combination of M. anisopliae with thiamiethonxam and chlorantraniliprole, which was higher than 67.4% obtained with M. anisopliae alone. Reduced dosage of chemicals in the combination can reduce resistance development and improve persistence. Application of M. anisopliae oil suspension at the base of winter corn can improve the infection rate of fall armyworm mature larvae, thus contributing to reduce overwintering population size and the green management of fall armyworm. |
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| Keywords: | Metarhizium anisopliae continuous control Spodoptera frugiperda |
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