| 噻呋酰胺与戊唑醇复配对水稻纹枯病的防治效果 |
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| 引用本文： | 谷春艳,张勇,周凤艳,刘小林,高同春.噻呋酰胺与戊唑醇复配对水稻纹枯病的防治效果[J].安徽农业科学,2012,40(17):9329-9330,9337. |
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| 作者姓名： | 谷春艳 张勇 周凤艳 刘小林 高同春 |
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| 作者单位： | 安徽省农业科学院植物保护研究所,安徽合肥,230031;安徽省农业科学院植物保护研究所,安徽合肥,230031;安徽省农业科学院植物保护研究所,安徽合肥,230031;安徽省农业科学院植物保护研究所,安徽合肥,230031;安徽省农业科学院植物保护研究所,安徽合肥,230031 |
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| 基金项目： | 公益性(农业)行业科研专项 |
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| 摘 要： | 目的]研究噻呋酰胺与戊唑醇复配对水稻纹枯病的防治效果。方法]用平皿菌落直径法测定噻呋酰胺与戊唑醇复配对水稻纹枯病病菌的毒力,并进行田间防效测定。结果]噻呋酰胺和戊唑醇对水稻纹枯病病菌EC50值分别是0.139 3和0.135 6μg/ml,2种药剂的毒力相当;噻呋酰胺与戊唑醇复配对水稻纹枯病病菌增效系数(SR)为0.828 3～2.535 0,部分配比具有显著增效作用。按照增效配比进行田间防效验证表明,225～375 g/hm2的用量对水稻纹枯病的防效可达88.04%～97.61%,高于2个单剂的防效。结论]噻呋酰胺与戊唑醇按5:1的比例复配对水稻纹枯病有较好的防治效果。
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| 关 键 词： | 噻呋酰胺 戊唑醇 水稻纹枯病 复配 联合毒力 田间药效 |
Control Effects of the Complex Formulation of Thifluzamide and Tebuconazole on Rice Sheath Blight |
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| Institution: | GU Chun-yan et al(Institute of Plant Protection,Anhui Academy of Agricultural Sciences,Hefei,Anhui 230031) |
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| Abstract: | Objective] The aim was to study the control effects of the complex formulation of thifluzamide and tebuconazole on rice sheath blight.Method] The toxicity of the complex formulation of thifluzamide and tebuconazole on Rhizoctonia solani was determined by mycelial growth method and the field trials were performed.Result]The results showed that the EC50 for thifluzamide and tebuconazole in inhibiting mycelial growth of R.solani were 0.139 3 and 0.135 6 μg/ml,respectively.The toxicities of these reagents were similar.The synergistic factors ranged from 0.8283 to 2.535 0,indicating obvious synergistic effect.The field trials showed that 225-375 g/hm2 complex formulation provided 88.04%-97.61% control efficacy based on the synergistic factors,higher than that of the single reagent.Conclusion] The complex formulation of thifluzamide and tebuconazole with 5∶1 had good control effects on rice sheath blight. |
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| Keywords: | Thifluzamide Tebuconazole Rice sheath blight Complex formulation Joint-toxicity Field efficacy |
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