27%二甲戊灵·砜吡草唑乳油防治棉花田一年生杂草效果与安全性  

Control Effect and Safety of Pendimethalin-pyroxasulfone 27%EC Against Annual Weeds in Cotton Field

作　　者：李琦 郭文磊 孟琦 于金萍 刘亦学[1] 张惟 Li Qi;Guo Wenlei;Meng Qi;Yu Jinping;Liu Yixue;Zhang Wei(Institute of Plant Protection,Tianjin Academy of Agricultural Sciences,Tianjin 300381;Plant Protection Research Institute,Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection,Guangzhou 510640;Tianjin Agricultural Radio and Television School Jinghai District Branch,Tianjin 300381)

机构地区：[1]天津市农业科学院植物保护研究所,天津300381 [2]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,广州510640 [3]天津市农业广播电视学校静海区分校,天津300381

出　　处：《中国农学通报》2021年第25期121-124,共4页Chinese Agricultural Science Bulletin

基　　金：所长创新基金“荠菜对双氟磺草胺的抗性分子机制研究”(20190001S)。

摘　　要：为明确27%二甲戊灵·砜吡草唑乳油土壤封闭处理对棉花田一年生杂草的防效及对棉花的安全性,采用随机区组的试验方法进行田间药效试验。结果表明,27%二甲戊灵·砜吡草唑乳油对棉花田主要杂草马唐、牛筋草、马齿苋、反枝苋均有较好的防除效果,在有效成分用量为607.5、810、1012.5、1620 g a.i./hm^(2)条件下,药后40天总鲜种防效为86.1%、91.7%、96.7%、99.3%,防治效果较好,棉花的增产率为26.04%~28.87%。因此,27%二甲戊灵·砜吡草唑乳油可采用土壤喷雾防除棉田杂草,对棉花安全,推荐剂量为607.5~1012.5 g a.i./hm^(2)。The study aims to determine the control effect and safety of pendimethalin-pyroxasulfone 27%EC soil sealing treatment on annual weeds in cotton field.Random group test design was conducted in the field pharmacodynamic experiment.The results showed that:pendimethalin-pyroxasulfone 27%EC had excellent control effect on main weeds of cotton such as Digitaria sanguinalis,Eleusine indica,Porbulaea oleracea and Amaranthus refroflexus.40 days after treatments,the average fresh weight control effects were 86.1%,91.7%,96.7%and 99.3%under the effective ingredient dosage of 607.5,810,1012.5 and 1620 g a.i./hm^(2)respectively,and the yield increase rate of cotton was 26.04%-28.87%.Thus,pendimethalin-pyroxasulfone 27%EC could be sprayed to control weeds in cotton field,which is safe to cotton,and the recommended dosage is 607.5-1012.5 g a.i./hm^(2).

关 键 词：27%二甲戊灵·砜吡草唑乳油 棉花 杂草 防治效果 安全性 

分 类 号：S451.2[农业科学—植物保护]