| 草地贪夜蛾在南充市发生情况及原因分析 |
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| 引用本文： | 杨云,何川,金容,李仕伟,夏清清,郑祖平.草地贪夜蛾在南充市发生情况及原因分析[J].现代农业科技,2020(18). |
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| 作者姓名： | 杨云 何川 金容 李仕伟 夏清清 郑祖平 |
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| 作者单位： | 南充市农业科学院 四川 南充 637000,南充市农业科学院 四川 南充 637000,南充市农业科学院 四川 南充 637000,南充市农业科学院 四川 南充 637000,南充市农业科学院 四川 南充 637000,南充市农业科学院 四川 南充 637000 |
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| 基金项目： | 南方山地玉米化肥农药减施技术集成研究与示范；玉米产业技术体系 |
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| 摘 要： | 草地贪夜蛾是一种原于美洲的杂食性害虫,此前所未有的外来物种今年初首次在我国云南被发现。5月19日,南充市顺庆区潆溪镇首次发现有草地贪夜蛾为害,该研究经过对南充市周边县(市、区)草地贪夜蛾迁飞轨迹、降落地形和为害玉米生育期展开调查。草地贪夜蛾前期在南充主要沿嘉陵江从下游往上游迁飞,而周边远离江边的乡镇为害较轻；草地贪夜蛾在同个乡镇的不同地势的地块分布各有差异,平坦、通风口地形有利于草地贪夜蛾降落为害；在不同生育期中草地贪夜蛾更倾向于在玉米小喇叭口期取食为害。
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| 关 键 词： | 草地贪夜蛾 迁飞 降落 玉米生育期 |
| 收稿时间： | 2020/5/15 0:00:00 |
| 修稿时间： | 2020/5/15 0:00:00 |
The occurrence and cause analysis of the fall armyworm (Spodopterafrugiperda) in Nanchong City |
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| Authors: | ZHENG Zu-ping |
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| Institution: | Nanchong Academy of Agricultural Sciences,Nanchong |
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| Abstract: | Fall armyworm is an omnivorous insect native to America. It was first discovered in Yunnan province of China as an unprecedented alien species early this year. Yingxi town, Shunqing district, Nanchong city was first found to have an insect infestation of fall armyworm on May 19th. This study investigated the migratory trajectory, landing topography and growth stages of maize during theinfestation of fall armyworm the surrounding counties (cities and districts) of Nanchong city.In the early stage, fall armyworm mainly moved from the lower reaches to the upper reaches along the Jialing River in Nanchong, while the surrounding towns far from the river were less infested. In the same town, the distributions of fall armyworm in different terrain plots were varied. Generally, flat and vent terrain was conducive to the infestation of fall armyworm. Moreover, in different growth stages, the fall armyworm more likely to feed on maize during the period of small trumpet. |
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| Keywords: | Fall armyworm (Spodopterafrugiperda) Migratory flight Landing Maize growth stages |
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