摘要
草地贪夜蛾是入侵我国的重大农业害虫,其寄主植物范围广,对我国粮食生产安全构成重大威胁。本研究通过室内盆栽接虫试验,研究不同种衣剂包衣对苗期小麦草地贪夜蛾的防治效果。结果表明,4种种衣剂处理均能显著提高小麦出苗率,其中,480 g/L四唑虫酰胺种子处理悬浮剂10 mL/kg处理,小麦出苗率最高,达到97.78%,与对照相比增加了21.38%。40%溴酰·噻虫嗪种子处理悬浮剂的保叶效果和防虫效果均表现良好,其中4.5 mL/kg种子包衣对小麦齐苗后7、14 d和21 d接虫处理的保叶效果分别为76.12%、69.84%和70.45%,而且,接虫后14 d全株调查时未见活虫,防虫效果达到100%。随着接虫时间的推迟,含有双酰胺类药剂成分的各种衣剂处理对草地贪夜蛾为害麦苗的保叶效果有所下降,但均显著好于600 g/L吡虫啉种子处理悬浮剂。
Spodoptera frugiperda is an important invasive pest in China with a wide range of host plants,which may be a major threat to our grain production security.The indoor pot experiment was conducted in present study to evaluate the control effect of different seed-coating agents on S.frugiperda in seedling stage of wheat.The results showed that the wheat emergence rate had been significantly increased by four seed-coating agents.The highest wheat emergence rate reached 97.78% by treatment with 10 mL/kg of tetraniliprole 480 g/L FS,which increased by 21.38% compared with the control.Cyantraniliprole·thiamethoxam 40% FS performed good leaf protection effect and good control effect against S.frugiperda.The leaf protection effects of tetraniliprole 480 g/L FS at 4.5 mL/kg were 76.12%,69.84% and 70.45% after wheat emergence of 7,14 and 21 days,respectively,and no live insect was found in the whole plant 14 days after infestation,which revealed that the control effect reached 100%.With the delay of infestation time,the leaf protection effects of seed-coating agents containing diamide on wheat seedlings were decreased,but were significantly better than that of imidacloprid 600 g/L FS.
作者
徐丽娜
徐婷婷
佟强
胡本进
毕思佳
胡飞
王振营
XU Lina;XU Tingting;TONG Qiang;HU Benjin;BI Sijia;HU Fei;WANG Zhenying(Institute of Plant Protection and Agro-products Safety,Anhui Academy of Agricultural Sciences,Hefei 230031,China;State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China)
出处
《植物保护》
CAS
CSCD
北大核心
2022年第5期348-351,360,共5页
Plant Protection
基金
国家重点研发计划(2021YFD1400700)。
关键词
草地贪夜蛾
小麦
种衣剂
防治效果
Spodoptera frugiperda
wheat
seed-coating agent
control effect
