丙嗪嘧磺隆与氰氟草酯桶混一次防控水直播稻田杂草效果与安全性  

Efficacy and Selectivity of Propyrisulfuron and Cyhalofop-butyl Mixtures on Weeds in Wet Direct-seeded Rice Fields

作　　者：娄天成 徐蓬[2] 孙钰晨 沈跃明 汤云鹤 王红春[2] LOU Tian-cheng;XU Peng;SUN Yu-chen;SHEN Yue-ming;TANG Yun-he;WANG Hong-chun(Jiangsu Agricultural Means of Production Group Agrochemical Co.,Ltd.,Nanjing 211100,China;Institute of Plant Protection,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;Sumitomo Chemical Industry Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]江苏省农业生产资料集团农用化学有限公司,江苏南京211100 [2]江苏省农业科学院植物保护研究所,江苏南京210014 [3]住友化学工业株式会社,上海200120

出　　处：《杂草学报》2020年第2期68-74,共7页Journal of Weed Science

基　　金：国家重点研发计划(编号:2016YFD0200503-4)。

摘　　要：采用田间小区试验,研究9.5%丙嗪嘧磺隆SC与20%氰氟草酯OD桶混一次施药防控水直播稻田全生育期杂草的效果和安全性。结果表明,水稻播后10~15 d,9.5%丙嗪嘧磺隆SC 60 mL/667 m^2与20%氰氟草酯OD 75 mL/667 m^2桶混一次用药对稗属杂草、千金子、鸭舌草、多花水苋、鳢肠的株防效和鲜重防效均达93%以上,与常规“一封二杀三补”3次化除处理(“一封”即播后3 d用35%丙·苄WP 100 g/667 m^2喷雾,“二杀”即播后20 d用10%恶唑酰草胺EC 80 mL/667 m^2与20%氰氟草酯OD 100 mL/667 m^2混配喷施,“三补”即播后30 d用460 g/L 2甲·灭SL 150 mL/667 m^2补喷施)的防效相当,且对水稻安全。与常规“一封二杀三补”3次化除方案相比,9.5%丙嗪嘧磺隆SC与20%氰氟草酯OD桶混一次用药控草技术控制了水直播水稻全生育期草害,减少2次用药,节省了药剂和用工成本,有较好的推广应用价值。The efficacy and selectivity of the mixtures of propyrisulfuron 9.5%SC and cyhalofop-butyl 20%OD in wet direct-seeded rice fields was assessed in a field experiment.Propyrisulfuron 9.5%SC 60 mL/667 m^2 mixed with cyhalofop-butyl 20%OD 75 mL/667 m^2 applied once at 10 to 15 days after seeding provided above 93%control based on stem number and fresh weight of Echinochloa spp.,Leptochloa chinensis(L.)Nees.,Monochoria vaginalis(Burm.f.)Presl.,Ammannia multiflora Roxb.,and Eclipta prostrata L..The efficacy of this mixture was similar to the customary treatment that includes application of herbicides at three times(pretilachlor·bensulfuron-methyl 35%WP 100 g/667 m^2 3 days after seeding,and then spraying the mixture of metamifop10%EC 80 mL/667 m^2 and cyhalofop-butyl 20%OD 100 mL/667 m^2 20 days after seeding,followed by bentazone·MCPA-Na 460 g/L SL 150 mL/667 m^2 30 days after seeding),and it was safety to rice.The single treatment with the mixture of propyrisulfuron 9.5%SC and cyhalofop-butyl 20%OD reduced the frequency of herbicide use,saved chemical and labor costs,and had better promotion and application value.Therefore,this method has broad application prospects in the wet direct-seeded rice fields.

关 键 词：丙嗪嘧磺隆 氰氟草酯 水直播稻 杂草 防效 安全性 

分 类 号：S451[农业科学—植物保护]