| 吴仁海, 孙慧慧, 苏旺苍, 徐洪乐, 鲁传涛 *, 魏红梅, 薛飞.氟噻草胺与氟唑磺隆混配协同作用及在小麦田杂草防治中的应用[J].植物保护,2018,44(2):209-214. |
| 氟噻草胺与氟唑磺隆混配协同作用及在小麦田杂草防治中的应用 |
| Study on synergy of flufenacet and flucarbazone-Na to weed control in wheat fields |
| 投稿时间：2017-05-03 修订日期：2017-08-24 |
| DOI：10.16688/j.zwbh.2017163 |
| 中文关键词: 氟噻草胺 氟唑磺隆 协同作用 小麦 多花黑麦草 |
| 英文关键词:flufenacet flucarbazone-Na synergistic effect wheat Lolium multiflorum |
| 基金项目:国家重点研发计划(2016YFD0200503) |
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| 中文摘要: |
| 本文通过室内生物测定研究了氟噻草胺与氟唑磺隆对小麦及多花黑麦草的活性, 田间试验测定了二者混配对阔叶杂草的防效及对小麦分蘖数的影响。室内水培法测定结果表明, 氟噻草胺、氟唑磺隆对多花黑麦草有效抑制中剂量(ED50)分别为0.37 mg/L和105.91 mg/L, 氟噻草胺与氟唑磺隆混配比例为8∶2、12∶2、16∶2、20∶2时, 共毒系数(CTC)分别为94.3、239.7、198.1、156.5, 表明氟噻草胺与氟唑磺隆混用具有相加或增效作用, 其中以12∶2、16∶2比例混配对多花黑麦草防治增效最为显著。盆栽试验结果表明, 苗前以12∶2和16∶2比例土壤封闭喷施对小麦与多花黑麦草的选择性指数为1.51和1.43；苗后3 d及苗后15 d茎叶喷施对多花黑麦草与小麦选择性较差，选择性指数低于1。田间测定结果表明, 氟噻草胺与氟唑磺隆混配对阔叶杂草荠菜、播娘蒿、婆婆纳防效优于氟噻草胺单独使用, 混配条件下株防效为85.45%～100%, 鲜重防效为89.57%～100%, 对小麦分蘖数无显著影响。 |
| 英文摘要: |
| The activity of flufenacet, flucarbazone-Na or their combinations to the growth of wheat and Lolium multiflorum Lamk. were evaluated through indoor bioassay method. The results of hydroponic method showed that the median effective dose (ED50 value) of flufenacet and flucarbazone-Na were 0.37 mg/L and 105.91 mg/L on L.multiflorum Lamk, respectively. The mixtures of flufenacet and flucarbazone-Na with ratios of 8∶2, 12∶2, 16∶2 and 20∶2 showed additive or synergistic effects on L. multiflorum, with the co-toxicity coefficient (CTC) of 94.3, 239.7, 198.1 and 156.5, respectively. The selective values of flufenacet and flucarbazone-Na with ratios of 12∶2 and 16∶2 were 1.51 and 1.43, respectively, when treated at pre-emergence stage, while few selectivity was observed when treated at post-emergence stage. In field the synergy of flufenacet and flucarbazone-Na displayed excellent control effect on broad leaf weeds, such as Capsella bursa-pastoris, Descurainia sophia and Veronica didyma, with the control efficacies of 85.45%-100% in plant number, and 89.57%-100% in fresh weight, but no significant effect on wheat tillers. |
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