稻田苗后茎叶处理剂混用的联合除草作用  

Combined Effect of Foliar Herbicide Mixtures for the Control of Weeds in Rice

作　　者：郭文磊 冯莉[1] 吴丹丹[1] 田兴山[1] GUO Wen-lei;FENG Li;WU Dan-dan;TIAN Xing-shan(Plant Protection Research Institute,Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection,Guangzhou 510640,China)

机构地区：[1]广东省农业科学院植物保护研究所/广东省植物保护新技术重点实验室,广东广州510640

出　　处：《杂草学报》2020年第2期75-78,共4页Journal of Weed Science

基　　金：国家自然科学基金(编号:31901900);广东省现代农业产业共性关键技术研发创新团队(编号:2019KJ113);广州市民生科技攻关项目(编号:201803020004);科技创新战略专项资金(高水平农科院建设)(编号:R2017YJ-YB1003、R2018QD-061)。

摘　　要：为明确稻田常用苗后茎叶处理剂混合使用对常见杂草防效的影响,采用温室盆栽法测定了氰氟草酯、噁唑酰草胺分别与灭草松、氯氟吡氧乙酸异辛酯混用对杂草的鲜重防效,并用Gowing法判断其联合作用类型。结果表明,灭草松可降低氰氟草酯对稗草和马唐及噁唑酰草胺对牛筋草和马唐的防效,氯氟吡氧乙酸异辛酯可提高氰氟草酯对稗草和马唐及噁唑酰草胺对马唐的防效,氰氟草酯和噁唑酰草胺对灭草松或氯氟吡氧乙酸异辛酯防控丁香蓼的防效无明显影响。灭草松与氰氟草酯或噁唑酰草胺混用对稗草、牛筋草、马唐和丁香蓼的联合作用类型为加成或拮抗作用;氯氟吡氧乙酸异辛酯与氰氟草酯或噁唑酰草胺混用对稗草、牛筋草、马唐和丁香蓼的联合作用类型为加成或增效作用。Greenhouse bioassays were conducted to determine the efficacy of combinations of cyhalofop-butyl or metamifop and bentazone or fluoroxypyr-methyl according to the Gowing method.Bentazone reduced the efficacy(based on fresh weight)of cyhalofop-butyl on Echinochloa crus-galli and Digitaria sanguinalis and that of metamifop on Eleusine indica and D.sanguinalis.In contrast,fluoroxypyr-methyl increased the efficacy of cyhalofop-butyl on E.crus-galli and D.sanguinalis and that of metamifop on D.sanguinalis.Neither cyhalofop-butyl nor metamifop significantly influenced the efficacy of fluoroxypyr-methyl or bentazone to Ludwigia prostrate.The interaction between bentazone and cyhalofop-butyl or metamifop was additive or antagonistic to E.crusgalli,E.indica,D.sanguinalis and L.prostrate.The combination of fluoroxypyr-methyl with cyhalofop-butyl or metamifop was additive or synergistic to E.crus-galli,E.indica,D.sanguinalis and L.prostrate.

关 键 词：氰氟草酯 噁唑酰草胺 灭草松 氯氟吡氧乙酸异辛酯 混用 联合作用 

分 类 号：S451[农业科学—植物保护]