有机蓝莓园大窠蓑蛾的室内毒力与田间药效
The Indoor Toxicity of Clania variegate Snellen in Organic Blueberry Plantation and Field Efficacy
黄胜先 1王正文 1李佳林 1侯彪 1谌金吾 1石兵 2万文2
作者信息
- 1. 贵州省黔东南州农业科学院,贵州凯里556000
- 2. 贵州省黄平县丰平农牧业科技有限公司,贵州黄平556100
- 折叠
摘要
[目的]筛选有机蓝莓园大窠蓑蛾的有效生物防治药剂.[方法]采用室内毒力测定和田间药效试验,测定棉铃虫核型多角体病毒、苏云金杆菌、球孢白僵菌、绿僵菌4种目前常用的生物药剂对大窠蓑蛾幼虫的防治效果.[结果]室内毒力测定结果表明:棉铃虫核型多角体病毒的杀虫活性最高,LD50为2.15×106 PIB/mL,4种生物药剂对大窠蓑蛾幼虫毒力由高到低依次为棉铃虫核型多角体病毒、苏云金杆菌、球孢白僵菌、绿僵菌;田间药效试验结果表明:药后10 d各药剂的防治效果均超过50％,以棉铃虫核型多角体病毒处理防效最高,为94.17％.[结论]棉铃虫核型多角体病毒可作为防治大窠蓑蛾幼虫的首选药剂,建议在7～9月进行喷药,即在大窠蓑蛾幼虫期的2～3龄以前效果最好.
Abstract
[Objective] To screen out effective medicament against Clania variegate Snellen in organic blueberry plantation.[Method] Through indoor toxicity determination and field efficacy experiment,the control efficacy of 4 commonly used medicament (Helicoverpa armigera nuclear polyhedrosis virus,Bacillus thuringieusis,Beauveria bassiana and Metarrhizium anisopliae) against Clania variegate Snellen was determined.[Result] The results of laboratory tests showed that the insecticidal activity of Helicoverpa armigera nuclear polyhedrosis virus is the highest,LD50 for 2.15 × 106 PIB/mL; the toxicity from high to low is Helicoverpa armigera nuclear polyhedrosis virus ＞ Bacillus thuringiensis ＞ Beauveria bassiana ＞ Metarrhizium anisopliae.The results of field efficacy showed that efficacy of each medicament after applying 10 d is above 50％,Helicoverpa armigera nuclear polyhedrosis virus is the highest as 94.17％.[Conclusion] Helicoverpa armigera nuclear polyhedrosis virus can be used as preferred reagent for controlling Clania variegate larva.The medicament should be applied during July-September,namely before 2-3 years old of Clania vaiegate larva.
关键词
大窠蓑蛾/有机蓝莓园/毒力测定/田间药效Key words
Clania variegate Snellen/Organic blueberry plantation/Toxicity determination/Field efficacy引用本文复制引用
基金项目
贵州省农业攻关资助项目(黔科合NY20133046号)
省州县三方合作资助项目(黔东南科合字201405号)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据