| 6种药剂对重阳木帆锦斑蛾的毒力测定和药效试验 |
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| 引用本文： | 王凤,徐颖,赵志勇,李跃忠,鞠瑞亭.6种药剂对重阳木帆锦斑蛾的毒力测定和药效试验[J].中国森林病虫,2012,31(2):39-42. |
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| 作者姓名： | 王凤 徐颖 赵志勇 李跃忠 鞠瑞亭 |
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| 作者单位： | 1. 上海市园林科学研究所,上海,200232
2. 上海海事大学,上海,201306 |
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| 基金项目： | 上海市绿化和市容管理局攻关项目(编号:G092401,G102403) |
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| 摘 要： | 重阳木帆锦斑蛾Histia rhodope是重阳木Bischofia polycarpa上的主要害虫。选用6种药剂对重阳木帆锦斑蛾进行室内毒力测定和室外药效试验。采用浸渍法的室内毒力测定结果表明:24 h后杀虫活性最高的是甲维盐(LC50为0.312 0 mg/L),烟碱.苦参碱和高效氯氰菊酯次之(LC50值分别为3.548 5和8.920 8 mg/L),毒死蜱、灭幼脲Ⅲ号稍差(LC50分别为128.844 2和176.349 9 mg/L),Bt活性最差(LC50为3 490 831.511 2 mg/L)。48 h后,药剂活性呈上升趋势,活性最高的仍为甲维盐。室外药效试验结果显示甲维盐、毒死蜱、高效氯氰菊酯1 000倍液,烟碱.苦参碱800倍液对重阳木帆锦斑蛾的防治效果较好。
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| 关 键 词： | 重阳木帆锦斑蛾 重阳木 毒力测定 药效 |
Toxicity test and control efficacy of six insecticides against Histia rhodope |
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| Institution: | WANG Feng,et al.(Shanghai Institute of Landscape Gardening Science,Shanghai 200232,China) |
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| Abstract: | Histia rhodope was a major pest in Bischofia polycarpa.The result of toxicity test with immersion method in lab showed emamectin benzoate presented the best insecticidal activity against the third instar larvae of H.rhodope 24 h after the treatments with an LC50 value of 0.312 0mg/L,followed by that of matrine-nicotine,beta-cypermethrin,chlorpyrifos and chlorbenzuron Ⅲ with LC50 values of 3.548 5,8.920 8,128.844 2,176.349 9 mg/L respectively.That of Bt showed the lowest activity.The toxicity of the 6 insecticides 48 h after the treatment increased.The result of control efficacy test in the field showed that emamectin benzoate,chlorpyrifos,beta-cypermethrin diluted into 1 000 times and matrine-nicotine diluted into 800 times showed good control efficacy. |
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| Keywords: | Histia rhodope Bischofia polycarpa toxicity test control efficacy |
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