草地贪夜蛾在安徽地区越冬能力初探  

Potential overwintering ability of fall armyworm Spodoptera frugiperda (J.E. Smith) in Anhui province

作　　者：谢明惠 钟永志 陈浩梁 林璐璐 张光玲 徐丽娜 王振营[2] 张金平 张峰 苏卫华 XIE Minghui;ZHONG Yongzhi;CHEN Haoliang;LIN Lulu;ZHANG Guangling;XU Lina;WANG Zhenying;ZHANG Jinping;ZHANG Feng;SU Weihua(Institute of Plant Protection and Agro-products Safety,Anhui Academy of Agricultural Sciences,Hefei 230031,China;Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China;MARA-CABI Joint Laboratory for Bio-safety,Beijing 100193,China)

机构地区：[1]安徽省农业科学院植物保护与农产品质量安全研究所,合肥230031 [2]中国农业科学院植物保护研究所,北京100193 [3]农业农村部-CABI生物安全联合实验室,北京100193

出　　处：《植物保护》2020年第3期236-241,共6页Plant Protection

基　　金：安徽省重大科技项目(201903a06020027);中央级公益性科研院所基本科研业务费专项(Y2019YJ06)。

摘　　要：草地贪夜蛾的生长发育、繁殖和分布与环境温度密切相关,为探明该虫在安徽地区的越冬能力,本研究利用人工接虫的方式模拟草地贪夜蛾冬季的田间存活状态,调查幼虫存活率、龄期、植株被害率,并利用线性模型预测草地贪夜蛾田间发育历期。结果表明:草地贪夜蛾在田间平均气温低于10℃并持续8~10 d时死亡率达到100%;10月15日接入的草地贪夜蛾幼虫无法完成完整世代周期,但仍能为害玉米幼苗,接虫后30 d玉米植株的被害率均达100%;根据模型公式,采用10月15日至11月18日期间的温度预测发育历期,得到卵、幼虫、蛹以及整个世代的发育历期分别为9.23、46.86、40.70、69.38 d。本研究初步探明了草地贪夜蛾在安徽地区的越冬规律,研究结果为虫情监测和防控提供科学依据。The growth, development, reproduction and distribution of Spodoptera frugiperda are closely related to environmental temperature. In order to clarify the overwintering ability of the insect in Anhui, artificial inoculation was used to simulate the survival status of S.frugiperda in winter. The larval survival rate, age and damage rate to plant were investigated, and the linear development model was used to predict the field development duration of different instars. The results showed that the mortality was 100% when the average temperature was below 10℃ for 8-10 days. The larvae inoculated on October 15 could not complete the full generation cycle. However, they could still damage corn, and the damage rate was 100% 30 d post inoculation. According to the temperatures between October 15 and November 18, the predicted developmental duration of eggs, larvae, pupae and the entire generation was 9.23 d, 46.86 d, 40.70 d and 69.38 d, respectively. The results provided scientific basis for monitoring and control of insect pests.

关 键 词：草地贪夜蛾 越冬能力 发育历期 被害率 

分 类 号：S431.2[农业科学—农业昆虫与害虫防治]