| 砜吡草唑除草活性及对玉米的安全性评价 |
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| 引用本文： | 毕亚玲,邢雨诚,李云峰,万永乐,孙倩倩,项晶,陈雪莉.砜吡草唑除草活性及对玉米的安全性评价[J].玉米科学,2022,30(6):149-155. |
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| 作者姓名： | 毕亚玲 邢雨诚 李云峰 万永乐 孙倩倩 项晶 陈雪莉 |
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| 作者单位： | 安徽科技学院农学院, 安徽 凤阳 233100;安徽科技学院资源与环境学院, 安徽 凤阳 233100 |
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| 基金项目： | 2019年度高校优秀青年人才支持计划项目(gxyq2019060)、安徽省教育厅自然科学重点项目(KJ2017A511)、农业农村部2021年农产品质量安全监管专项(农药)(15217029)、安徽科技学院稳定人才项目(NXWD201604) |
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| 摘 要： | 砜吡草唑是一种新型、高效、广谱的土壤处理除草剂，为探究其对玉米田常见杂草的除草活性及对玉米的安全性，通过室内生物测定和田间药效试验测定砜吡草唑的杀草谱、除草活性及其对玉米的安全性。室内生物测定结果表明，砜吡草唑在90g(a.i.)/hm2时，对牛筋草、马唐、狗尾草、稗草、碎米莎草、青葙、铁苋菜等多种常见秋熟作物田杂草均具有较好活性，鲜重抑制率均大于90%；对4种常见玉米田杂草马唐、稗草、青葙、碎米莎草的GR50分别为14.77、16.41、15.37、27.74g(a.i.)/hm2，除草活性在供试剂量下均高于对照药剂精异丙甲草胺。砜吡草唑在供试的3个玉米品种奥玉510、郑单958、蠡玉16和4种杂草马唐、稗草、青葙和碎米莎草之间具有较好的选择性，选择性指数为23.82～240.88。田间药效试验表明，砜吡草唑在250g(a.i.)/hm2时，对马唐、稗草、铁苋菜、碎米莎草的总鲜重防效达91.4%，对供试玉米蠡玉16安全。
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| 关 键 词： | 玉米 砜吡草唑 杀草谱 除草活性 安全性 |
| 收稿时间： | 2021/11/23 0:00:00 |
Herbicidal Activity and Safety Evaluation of Pyroxasulfone in Maize Fields |
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| BI Ya-ling,XING Yu-cheng,LI Yun-feng,WAN Yong-le,SUN Qian-qian,XIANG Jing,CHEN Xue-li.Herbicidal Activity and Safety Evaluation of Pyroxasulfone in Maize Fields[J].Journal of Maize Sciences,2022,30(6):149-155. |
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| Authors: | BI Ya-ling XING Yu-cheng LI Yun-feng WAN Yong-le SUN Qian-qian XIANG Jing CHEN Xue-li |
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| Institution: | College of Agronomy, Anhui Science and Technology University, Fengyang 233100;College of Resource and Environment, Anhui Science and Technology University, Fengyang 233100, China |
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| Abstract: | Pyroxasulfone is a new, efficient and broad-spectrum pre-emergence herbicideHerbicidal activity against common weeds in maize fields and its safety to maize was studied by the greenhouse and field experiments. The results showed that in the treatment dose of 90 g(a.i.)/ha, Eleusine indica, Digitaria sanguinalis, Setaria viridis, Echinochloa crus-galli, Cyperus iria, Celosia argentea, Acalypha australi and other common weeds in variety of fields autumn crops were achieved control effect of above 90%. Among them, four kinds of maize field weed D. sanguinalis, E. crus-galli, C. argentea, C. iria had better control effects, with the GR50 of 14.77, 16.41, 15.37, 27.74 g(a.i.)/ha. Herbicidal activity was higher than s-metolachlor of the control agent. The selectivity index of pyroxasulfone between three tested maize varieties and four species of weeds were among 23.82 to 240.88, which showed that it has a higher selectivity between maize and weeds. The field test results of pyroxasulfone showed that, at the recommended dose in the field, pyroxasulfone had a control effect of 91.4% against D. sanguinalis, E. crus-galli, Acalypha. australi, C. iria. And it was safe for the test maize variety Liyu 16. |
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| Keywords: | Maize Pyroxasulfone Weed spectrum Herbicidal activity Safety |
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