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中国农学通报

中国农学通报 ›› 2026, Vol. 42 ›› Issue (5): 206-211.doi: 10.11924/j.issn.1000-6850.casb2026-0045

• 植物保护·农药 • 上一篇    下一篇

广东省稻田稗草对丁草胺的抗药性监测及替代药剂筛选

郭文磊(), 冯凯帆, 罗振亚, 张纯()   

  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/广东省农田生态系统除草剂安全使用科学观测研究站， 广州 510640
  • 收稿日期:2026-01-14 修回日期:2026-02-21 出版日期:2026-03-18 发布日期:2026-03-18
  • 通讯作者:
    张纯，女，1982年出生，湖南岳阳人，研究员，博士，主要从事农田杂草抗药性及防控技术方面的研究。通信地址：510640 广东省广州市天河区金颖路7号，E-mail：
  • 作者简介:

    郭文磊，男，1989年出生，山东菏泽人，副研究员，博士，研究方向：农田杂草抗药性与防控技术。通信地址：510640 广东省广州市天河区金颖路7号，E-mail：

  • 基金资助:
    广东省自然科学基金面上项目“稗对五氟磺草胺的代谢抗性分子机理研究”(2023A1515012349); 广东省现代农业产业技术体系“水稻产业创新团队”(2024CXTD05); 2025—2026年度广东省科协青年科技人才培育计划(SKXRC2025100); 广州市科技计划项目“撂荒地旱直播稻高产优质栽培技术研究与应用推广”(2025D04J0083)

Resistance Monitoring of Echinochloa crus-galli to Butachlor in Rice Fields in Guangdong and Screening of Alternative Herbicides

GUO Wenlei(), FENG Kaifan, LUO Zhenya, ZHANG Chun()   

  1. Institute of Plant Protection, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection/Guangdong Provincial Observation and Research Station for Safe Use of Herbicides in Farmland Ecosystems, Guangzhou 510640
  • Received:2026-01-14 Revised:2026-02-21 Published:2026-03-18 Online:2026-03-18

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摘要：

为探明广东省稻田稗草对丁草胺的抗性现状，并筛选可替代的防治药剂，本研究采用整株法检测了不同稗草种群对丁草胺的敏感性及抗性水平，并进一步评估了其对另外7种除草剂的敏感性。结果显示：在丁草胺推荐剂量（有效成分1080 g/hm2）下进行播后苗前处理时，不同稗草种群的株防效存在显著差异。其中，7个种群的株防效达100%，10个种群的株防效在82.7%~93.3%之间，但21-SX-3、21-LZ-4、21-LZ-7种群的株防效较低，分别为75.9%、70.0%、40.0%。对上述3个种群进行抗性指数测定，结果表明，播后苗前处理时，其对丁草胺的抗性指数范围为2.1~6.3；苗后早期处理时，抗性指数范围为2.9~6.0。替代药剂筛选试验表明，丙草胺对21-LZ-7种群的干重抑制率显著低于敏感种群21-LZ-1，而禾草丹、嘧草醚、双唑草腈、噁嗪草酮对21-LZ-1和21-LZ-7种群的干重抑制率均在90%以上，因此可作为防治丁草胺抗性稗草的有效替代药剂。综上，本研究证实了广东省部分稗草种群已对丁草胺产生低至中等水平的抗性，双唑草腈等除草剂可用于防治这些抗性种群。

关键词: 稗草, 丁草胺抗性, 抗性指数, 替代药剂

Abstract:

In order to clarify the resistance of Echinochloa crus-galli to butachlor in rice fields in Guangdong and screen alternative herbicides, the susceptibilities and resistance levels to butachlor of different Echinochloa crus-galli populations were determined by whole-plant experiment, and then the susceptibilities to 7 other herbicides were also determined. The results showed that there were significant differences in the control efficacy among different populations when treated with the recommended dosage of butachlor (active ingredient 1080 g/hm2) in pre-emergence applications; the plant control efficacies were 100% for 7 populations and were 82.7%-93.3% for 10 populations; however, the control efficacies were only 75.9%, 70.0% and 40.0% for the 21-SX-3, 21-LZ-4 and 21-LZ-7 population, respectively. When butachlor was applied pre-emergence, the resistance indices of the 21-SX-3, 21-LZ-4 and 21-LZ-7 populations ranged between 2.1 to 6.3; when butachlor was applied at the early stage of the seedlings, the resistance indices ranged between 2.9 to 6.0. In the experiments of screening alternative herbicides, the dry weight inhibition rate of pretilachlor on 21-LZ-7 population was significantly lower than that on the susceptible population 21-LZ-1, while the dry weight inhibition rates of thiobencarb, pyriminobac-methyl, pyraclonil and oxaziclomefone on both 21-LZ-1 and 21-LZ-7 population were above 90%, making them suitable as alternative herbicides for controlling butachlor-resistant E. crus-galli. In conclusion, this study indicates that some E. crus-galli populations in Guangdong have developed low to moderate levels of resistance to butachlor, and herbicides such as pyraclonil are suitable for the control of butachlor-resistant E. crus-galli populations.

Key words: Echinochloa crus-galli, butachlor resistance, resistance index, alternative herbicide