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中国农学通报 ›› 2021, Vol. 37 ›› Issue (25): 121-124.doi: 10.11924/j.issn.1000-6850.casb2020-0716

所属专题: 棉花

• 植物保护·农药 • 上一篇    下一篇

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

李琦1(), 郭文磊2, 孟琦3, 于金萍1, 刘亦学1, 张惟1   

  1. 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
  • 收稿日期:2020-11-27 修回日期:2021-04-23 出版日期:2021-09-05 发布日期:2021-09-23
  • 作者简介:李琦,男,1990年出生,山东济宁人,博士研究生,研究方向为农田杂草防除及杂草抗性机理。通信地址:300384 天津市西青区津静公路17公里处 天津市植物保护研究所,E-mail: liqi0309@hotmail.com
  • 基金资助:
    所长创新基金“荠菜对双氟磺草胺的抗性分子机制研究”(20190001S)

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

Li Qi1(), Guo Wenlei2, Meng Qi3, Yu Jinping1, Liu Yixue1, Zhang Wei1   

  1. 1Institute of Plant Protection, Tianjin Academy of Agricultural Sciences, Tianjin 300381
    2Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences/ Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640
    3Tianjin Agricultural Radio and Television School Jinghai District Branch, Tianjin 300381
  • Received:2020-11-27 Revised:2021-04-23 Online:2021-09-05 Published:2021-09-23

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./hm2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./hm2

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

Abstract:

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./hm2 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./hm2.

Key words: pendimethalin-pyroxasulfone 27% EC, cotton, weed, control effect, safety

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