| 2种生物农药防治有机水稻稻纵卷叶螟药效研究 |
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| 引用本文： | 曾晓楠,聂乾忠,宾秋实.2种生物农药防治有机水稻稻纵卷叶螟药效研究[J].现代农业科技,2009(13):149-150. |
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| 作者姓名： | 曾晓楠 聂乾忠 宾秋实 |
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| 作者单位： | 1. 湖南生物机电职业技术学院,湖南长沙,410127
2. 湖南农业大学 |
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| 摘 要： | 研究2种生物农药对有机水稻稻纵卷叶螟的防效，结果表明：在稻纵卷叶螟1-2龄幼虫高峰期用0．3％印楝素乳油1500mL／hm^2具有理想的防治效果，其杀虫、保叶效果分别达89．9％和85．8％，Bt乳剂500倍液对水稻纵卷叶螟也有较好的防治效果，杀虫、保叶效果分别达83．9％和83．1％。两者不仅对稻株无药害，而且有明显的增产作用，可以作为当前有机稻米生产过程中防治稻纵卷叶螟的理想药剂。
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| 关 键 词： | 印楝素乳油 Bt乳剂 稻纵卷叶螟 防效 |
Study on the Effect of Two Different Biopesticides Against Cnaphalocrocis Medinalis in Organic Rice Farming |
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| Authors: | ZENG Xiaonan NIE Qianzhong BIN Qiushi |
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| Institution: | 1 Hunan Biological and Electromechanical Polytechnic;Changsha Hunan 410127;2 Hunan Agricultural University |
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| Abstract: | Effect of two different biopesticides against Chaphalorocis medinalis in organic rice was studied.The results showed that the application of 1 500mL/hm2 of 0.3% azadirachtin EC revealed a good preventive effects against Cnaphalocrocis Medinalis in organic rice farming at the peak of 1st and 2nd larvae age.The insecticide rate and leaves retaining rate reached some 89.9% and 85.8%respectively.The application of 500 x BT emulsion also showed a good preventive efficiency against Cnaphalocrocis Medinalis and co... |
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| Keywords: | azadirachtin EC Bt emulsion Cnaphalocrocis Medinalis control effect |
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