| 丙炔氟草胺除草活性及对棉花的安全性 |
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| 引用本文： | 谭金妮,李琦,郭文磊,刘伟堂,王金信.丙炔氟草胺除草活性及对棉花的安全性[J].农药学学报,2017,19(2):189-194. |
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| 作者姓名： | 谭金妮 李琦 郭文磊 刘伟堂 王金信 |
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| 作者单位： | 1.山东农业大学 植物保护学院, 山东 泰安 271018 |
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| 基金项目： | 山东省现代农业产业技术体系（SDAIT-07-011-08）；国家公益性行业（农业）科研专项（201303031）. |
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| 摘 要： | 丙炔氟草胺是一种以原卟啉原氧化酶为作用标靶的N-苯基肽酰亚胺类除草剂。为探究其在棉花田的应用前景，通过温室盆栽法对丙炔氟草胺的杀草谱、除草活性及其对棉花的安全性进行了测定。结果表明:丙炔氟草胺对棉田常见阔叶杂草有较好防效，处理剂量为有效成分15 g/hm2时，对马齿苋Portulaca oleracea、反枝苋Amaranthus retroflexus、藜Chenopodium album、小藜Chenopodium serotinum和鳢肠Eclipta prostrata的鲜重防效均高于90%，对野油菜Rorippa indica、苣荬菜Sonchus arvensis、小飞蓬Conyza canadensis、龙葵Solanum nigrum、马唐Digitaria sanguinalis和牛筋草Eleusine indica等的鲜重防效高于80%；丙炔氟草胺对棉田4种常见阔叶杂草马齿苋、反枝苋、龙葵和藜的除草活性均显著高于二甲戊灵；丙炔氟草胺在鲁棉研28号与马齿苋、反枝苋、龙葵和藜之间的选择性指数依次为79.1、38.1、32.1和112.6，均显著高于二甲戊灵的12.0、9.9、5.8和9.2；鲁棉研37号、鑫秋4号与杂草间的选择性指数，与鲁棉研28号的相近。试验结果表明，丙炔氟草胺可作为棉田苗前防除阔叶杂草的候选药剂之一。
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| 关 键 词： | 丙炔氟草胺 除草活性 棉花 杀草谱 安全性 |
| 收稿时间： | 2016/7/27 0:00:00 |
Evaluation of herbicidal activity and safety to cotton of flumioxazin |
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| TAN Jinni,LI Qi,GUO Wenlei,LIU Weitang and WANG Jinxin.Evaluation of herbicidal activity and safety to cotton of flumioxazin[J].Chinese Journal of Pesticide Science,2017,19(2):189-194. |
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| Authors: | TAN Jinni LI Qi GUO Wenlei LIU Weitang and WANG Jinxin |
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| Institution: | 1.College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong Province, China |
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| Abstract: | Flumioxazin, which targets the protoporphyrin oxidase, is an N-phenylphthalimide herbicide. In order to explore its application prospect in cotton fields of China, the weed controlling spectrum, herbicidal activity and safety of flumioxazin to cotton were tested under greenhouse conditions. The results showed that flumioxazin displayed good controlling effect on the common broadleaf weeds infesting cotton. At the rate of 15 g a.i./hm2, flumioxazin application resulted in higher than 90% fresh weight reduction of Portulaca oleracea, Amaranthus retroflexus, Chenopodium album, Chenopodium serotinum and Eclipta prostrate, and 80%-90% fresh weight reduction of Rorippa indica, Sonchus arvensis, Conyza canadensis, Solanum nigrum, Digitaria sanguinalis and Eleusine indica. Flumioxazin showed higher herbicidal activity against P. oleracea, A. retroflexus, S. nigrum, C. album than pendimethalin. The selectivity indexes between Lumianyan 28 and P. oleracea, A. retroflexus, S. nigrum and C. album were 79.1, 38.1, 32.1 and 112.6, respectively, which were much higher than that of pendimethalin with corresponding selectivity index of 12.0, 9.9, 5.8 and 9.2, respectively. The selectivity index between Lumianyan 37, Xinqiu 4 and the weed species mentioned above was similar to that of Lumianyan 28. This study indicated that the flumioxazin could be used as one of candidate herbicides for the control of broadleaf weeds in cotton fields. |
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| Keywords: | flumioxazin herbicidal activity cotton weed control spectrum safety |
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