三氟啶磺隆与精喹禾灵混用的联合除草作用及其对棉花的安全性研究  

Weed control efficacy and safety evaluation to cotton of combinations of trifloxysulfuron and quizalofop-p-ethyl

作　　者：刁金贤[1] 王兆振[1] 郭文磊[1] 张乐乐[1] 李伟[1] 赵祖英 王金信[1] 

机构地区：[1]山东农业大学植物保护学院,山东泰安271018

出　　处：《农药学学报》2014年第6期706-712,共7页Chinese Journal of Pesticide Science

基　　金：山东省现代农业产业技术体系(SDAIT-07-011-08)

摘　　要：为明确三氟啶磺隆与精喹禾灵混用的联合除草作用及其对棉花的安全性,采用温室盆栽生物测定法,测定了其对香附子、马唐、牛筋草、马齿苋和反枝苋的联合除草作用,并对不同品种棉花的安全性及其在棉花与杂草之间的选择系数进行了研究。结果显示:三氟啶磺隆与精喹禾灵混用对香附子、马齿苋的防除效果为加成或增效作用,对马唐、牛筋草和反枝苋则以加成作用为主。当m(三氟啶磺隆)∶m(精喹禾灵)=1∶3和1∶4时,有效成分80 g/hm2的处理对供试棉花品种均安全,而有效成分160 g/hm2处理则对不同棉花安全性差异较大,其中对山农棉8号鲜重的抑制率较高,对鲁棉研36号则较安全;两者复配剂在棉花与杂草间的选择系数明显高于三氟啶磺隆单剂,提高了三氟啶磺隆对棉花的安全性。Whole-plant dose response experiments w ere conducted in greenhouse to evaluate the control efficacy to Eleusine indica,Digitaria sanguinalis,Portulaca oleracea,Amaranthus retroflexus and Cyperus rotundus,the safety on different cotton varieties,and the selectivity index betw een cottons and w eeds of the combinations of trifloxysulfuron and quizalofop-p-ethyl. The results show ed that combinations of the tw o herbicides had synergistic or additive activity to C. rotundus and P. oleracea,and additive activity to A. retroflexus, E. indica and D. sanguinalis. When the mass ratio of trifloxysulfuron and quizalofop-p-ethyl w as 1 ∶ 3,1 ∶ 4,the mixture w as safe to all cotton varieties at application rate of 80 g / hm2; however,when the application rate increased to 160 g /hm2,the safety of the mixture to different cotton varieties varied greatly,and the safety to Lumianyan 36 w as higher than that to Shannongmian 8. The selectivity index betw een cottons and w eeds of the combinations w assignificantly higher than that of trifloxysulfuron alone,w hich suggested combination of trifloxysulfuron and quizalofop-p-ethyl improved the safety on cotton.

关 键 词：三氟啶磺隆 精喹禾灵 联合作用 棉花 安全性 

分 类 号：S482.4[农业科学—农药学]