不同生育期玉米上草地贪夜蛾的发生为害规律  

Occurrence and damage of the fall armyworm Spodoptera frugiperda(Smith)at different growth stages of corn

作　　者：林丹敏 黄德超 邵屯 李子园 王磊[1] 陈科伟[1] 陆永跃[1] LIN Dan-Min;HUANG De-Chao;SHAO Tun;LI Zi-Yuan;WANG Lei;CHEN Ke-Wei;LU Yong-Yue(College of Plant Protection,South China Agricultural University,Guangzhou 510640,China;Precaution and Control Center for Agricultural Pest in Guangdong,Guangzhou 510500,China;Guangzhou Customs District,Guangzhou 510634,China)

机构地区：[1]华南农业大学植物保护学院,广州501642 [2]广东省农业有害生物预警防控中心,广州510500 [3]广州海关,广州510623

出　　处：《环境昆虫学报》2020年第6期1291-1297,共7页Journal of Environmental Entomology

基　　金：广东省重点领域研发计划(2020B020223004);广东省自然科学基金(2019A1515010588);广东省农业产业技术体系创新团队项目(2020KJ134,2019KJ104-08)。

摘　　要：2019年在广东湛江、江门调查了玉米上草地贪夜蛾Spodoptera frugiperda(Smith)发生为害动态,分析了不同生育期玉米上该虫发生为害差异规律。发现各个地区草地贪夜蛾的虫口数量与玉米受害程度存在较大差异,呈现不均衡性;该虫对玉米苗期为害最严重,其次为大喇叭口期;建立了2个地区玉米6个生育期受害率与虫口数量之间的线性回归模型。研究结果可为草地贪夜蛾监测预警及防控提供参考。The occurrence and damage dynamics of the fall armyworm Spodoptera frugiperda(Smith)on corn were investigated in Zhanjiang and Jiangmen,Guangdong in 2019,and the occurrence and damage regularity of the armyworm in different growth stages were analyzed.It was found that the armyworm density and damage degree to corn at different regions was different,showing imbalance.The damage to corn seedling stage of the armyworm was the most serious,followed by the big-bell-mouth stage.The linear regression models between the damage rate of corn and the pest density at six corn growth stages in two regions were established.The results provided the reference for monitoring,warning and control of the armyworm.

关 键 词：草地贪夜蛾 发生为害 玉米 生育期 

分 类 号：Q968.1[生物学—昆虫学] S433[农业科学—农业昆虫与害虫防治]