五氟·氰氟草可分散油悬浮剂防除水稻直播田杂草的效果及安全性评价  

Weeding Effect and Safety Evaluation of Penoxsulam·Cyhalofop-butyl Dispersible-oil SC in Directly-sown Rice Fields

作　　者：束爱萍[1] 刘增兵[2] 杨宙[1] 刘建华[1] 曹丰生[1] SHU Ai-ping;LIU Zeng-bing;YANG Zhou;LIU Jian-hua;CAO Feng-sheng(Rice Research Institute,Jiangxi Academy of Agricultural Sciences / National Engineering Laboratory for Rice（Nanchang）,Nanchang 330200,China;Institute of Soil and Fertilizer ＆ Resources and Environment,Jiangxi Academy of Agricultural Sciences / National Engineering and Technology Research Center for Red Soil Improvement,Nanchang 330200,China)

机构地区：[1]江西省农业科学院水稻研究所/水稻国家工程实验室(南昌),江西南昌330200 [2]江西省农业科学院土壤肥料与资源环境研究所/国家红壤改良工程技术研究中心,江西南昌330200

出　　处：《江西农业学报》2018年第12期56-59,共4页Acta Agriculturae Jiangxi

基　　金：江西省科技合作领域重点项目(20161BBH80067);"十三五"国家重点研发计划(2016YFD0200402);"十三五"国家重点研发计划课题(2017YFD0301601)

摘　　要：通过田间试验研究了60 g/L五氟·氰氟草可分散油悬浮剂对水稻直播田杂草的防除效果及对水稻的安全性。结果显示:施用60 g/L五氟·氰氟草可分散油悬浮剂有效成分90～120 g/hm2对杂草的防效随着用药量的增加而提高,对千金子、稗草、鸭舌草和异型莎草的株防效均在90%以上;对照药剂100 g/L氰氟草酯乳油(有效成分120 g/hm2)和25 g/L五氟磺草胺可分散油悬浮剂(有效成分30 g/hm2)只能有效地防除上述杂草中的2种或3种; 60 g/L五氟·氰氟草可分散油悬浮剂对水稻的安全性好,对水稻的增产率较高。The control effect of 60 g/L Penoxsulam·Cyhalofop-butyl dispersible-oil SC against weeds and its safety to rice plants in directly-sown rice fields were studied through field tests. The results showed that the weeding effect of applying 90-120 g a.i./hm 2 60 g/L Penoxsulam·Cyhalofop-butyl dispersible-oil SC increased when its dosage increased, and its plant-control effect on Leptochloa chinensis , Echinochloa crusgalli , Monochoria vaginalis and Cyperus difformis all was over 90%. Applying the contrast herbicides 120 g a.i./hm 2 100 g/L Cyhalofop-butyl EC and 30 g a.i./hm 2 25 g/L Penoxsulam dispersible-oil SC could effectively control only 2 or 3 species of above 4 weed species. Applying 60 g/L Penoxsulam·Cyhalofop-butyl dispersible-oil SC was very safe to rice plants, and could promote the yield increase of rice.

关 键 词：五氟·氰氟草可分散油悬浮剂 水稻 直播田 杂草 防除效果 

分 类 号：S451.21[农业科学—植物保护]