| 郁 艳 李 明 李荣玉 樊龙飞 卢 春.醚菊酯、 吡虫啉、 噻虫嗪及其混配对褐飞虱的毒力测定[J].广东农业科学,2015,42(1):73-77 |
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醚菊酯、 吡虫啉、 噻虫嗪及其混配对褐飞虱的毒力测定 |
| Toxicity of imidacloprid, thiamethoxam, ethofenprox and their mixtures on Nilaparvata lugens in Guizhou province |
| 投稿时间：2014-08-25 |
| DOI： |
| 中文关键词: 褐飞虱 毒力曰醚菊酯 吡虫啉 噻虫嗪 |
| 英文关键词: Nilaparvata lugens toxicity imidacloprid thiamethoxam ethofenprox |
| 基金项目: |
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| 摘要点击次数: 2010 |
| 全文下载次数: 852 |
| 中文摘要: |
| 采用点滴法测定了吡虫啉、噻虫嗪、醚菊酯及其混配对贵州 3 个县（黄平、开阳、桐梓）褐飞虱三龄若虫的毒力，并通过交互测定法筛选出对褐飞虱具有明显增效作用的优选配方。结果表明院噻虫嗪、吡虫啉和醚菊酯对 3县稻飞虱的 LD50范围分别为0.00125~0.00175、0.00135~0.00169、0.01739~0.01850 ug/头；与敏感品系相比，褐飞虱对吡虫啉表现出中等水平抗性（19.9~24.9 倍），而对醚菊酯仍表现出敏感性。吡虫啉与醚菊酯和噻虫嗪与醚菊酯有效成分分别以 1：5 和 1：7 混配时对褐飞虱具有较高的增效作用，共毒系数（CTC）分别为 166.93~198.23 和 174.29~188.74，其结果可为防治褐飞虱药剂汰选、混配用药及制剂研发提供科学依据。 |
| 英文摘要: |
| The experiment was conducted to study the toxic effects of imidacloprid, thiamethoxam, ethofenprox and their mixtures on the 3rd nymph of Nilaparvata lugens in Huangpin, Kaiyang and Tongzi County, Guizhou province by topical application method. Then the synergistic prescription was selected according to the laboratory experiments by interactive measurement. The results showed that the LD50 of imidacloprid, thiamethoxam, ethofenprox and their mixtures on N. lugens in three districts were 0.00125-0.00175g/headage, 0.00135-0.00169g/headage and 0.01739-0.01850 g/ headage, respectively. Compared with the susceptible strain of N. lugens, the populations developed moderate level of
resistance to imidacloprid (resistance ratios were 19.9 -24.9), and was sensitive to ethofenprox. And the toxicity
measurement indicated that the mixtures of imidacloprid and ethofenprox (15), thiamethoxam and ethofenprox (17) had
excellent synergistic effect on N.lugens, the co -toxicity coefficients (CTC) were 166.93 -198.23 and 174.29 -188.74,
respectively. The results could provid the scientific basis for choosing the better insecticides, guiding insecticides mixed and the development of preparation。 |
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