| 印楝素和Bt乳剂防治有机水稻二化螟的药效试验 |
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| 引用本文： | 曾晓楠,聂乾忠,刘东辉.印楝素和Bt乳剂防治有机水稻二化螟的药效试验[J].安徽农业科学,2009,37(25):12054-12055. |
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| 作者姓名： | 曾晓楠 聂乾忠 刘东辉 |
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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,湖南长沙,410128 |
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| 摘 要： | 目的]探索有机水稻二化螟的生物防治技术。方法]以杂交水稻组合88S／0293为供试品种，研究不同剂量的0．3％印楝素EC和Bt乳剂对有机水稻二化螟的防治效果及安全性。结果]在水稻二化螟1龄幼虫高峰期用0．3％印楝素EC2250ml／hm^2。对水稻二化螟具有较理想的防治效果，其杀虫、保苗效果分别达91．6％和80．0％；用0．3％印楝素ECl500ml／hm^2也有较好的防治效果，其杀虫、保苗效果也分别达到84．0％和72．7％；Bt乳剂500倍液有一定防治效果，其杀虫、保苗效果分别达77．9％和68．1％。使用印楝素EC和Bt乳剂不仅对稻株无药害，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二化螟的理想药剂。结论]该研究为有机水稻二化螟的生物防治奠定了基础。
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| 关 键 词： | 印楝素EC Bt乳剂 二化螟 防治效果 |
Study on the Efficacy of Azadirachtin EC and Bt Emulsion against Chilo suppressalis in Organic Rice |
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| ZENG Xiao-nan et al.Study on the Efficacy of Azadirachtin EC and Bt Emulsion against Chilo suppressalis in Organic Rice[J].Journal of Anhui Agricultural Sciences,2009,37(25):12054-12055. |
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| Authors: | ZENG Xiao-nan |
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| Institution: | ZENG Xiao-nan et al (Hunan Vocational , Technical College of Biological Electro-mechanism,Changsha,Hunan 410127) |
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| Abstract: | Objective] The aim was to explore the biological control technology for Chilo suppressalis in organic rice.Method] With hybrid rice combination 88S/0293 as tested variety,the control effect of 0.3% Azadirachtin EC and Bt emulsion at different dosages against C.suppressalis in organic rice and the safety were studied.Result] The application of 0.3% Azadirachtin EC at 2 250 ml/hm2 had more ideal control effect against C.suppressalis in organic rice at the peak of 1st larvae age and its insecticidal effect ... |
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| Keywords: | Azadirachtin EC Bt emulsion Chilo suppressalis Control effect |
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