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中国农学通报 ›› 2026, Vol. 42 ›› Issue (21): 174-180.doi: 10.11924/j.issn.1000-6850.casb2026-0563

• 植物保护•农药 • 上一篇    下一篇

广东省稻田稗草对二氯喹啉酸的抗性分布及抗性水平

郭文磊1(), 齐梦楠1,2, 张纯1()   

  1. 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
    2 华南农业大学生命科学学院, 广州 510642
  • 收稿日期:2026-06-30 修回日期:2026-09-01 出版日期:2026-11-10 发布日期:2026-11-10
  • 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:
    2025—2026年度广东省科协青年科技人才培育计划(SKXRC2025100); 广东省现代农业产业技术体系“水稻产业创新团队”(2026CXTD05); 高水平农科院建设专项“水稻密植生产模式下配套植保减损关键技术创新与示范”(NYQS202602); 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)

Distribution and Resistance Level of Echinochloa crus-galli to Quinclorac in Paddy Fields of Guangdong Province

GUO Wenlei1(), QI Mengnan1,2, ZHANG Chun1()   

  1. 1 Plant Protection Research Institute, 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
    2 College of Life Science, South China Agricultural University, Guangzhou 510642
  • Received:2026-06-30 Revised:2026-09-01 Published:2026-11-10 Online:2026-11-10

摘要:

为明确广东省不同地区稗草种群对二氯喹啉酸的抗性分布和抗性水平,采用整株生物测定法测定了71个稗草种群对二氯喹啉酸的抗性频率,并明确了不同抗性种群的抗性水平。结果表明,在二氯喹啉酸推荐用量(375 g/hm2,有效成分)下,有46个种群抗性频率为0,其他25个种群的抗性频率在10.7%~100.0%之间,其中有13个种群的抗性频率达100.0%。广州、佛山、江门和肇庆等地区采集的稗草种群对二氯喹啉酸表现出较高的抗性频率,河源、韶关和清远等地区的大多数种群仍然对该除草剂敏感。不同抗性种群的抗性指数差异较大。其中,24-YD-2等6个种群的抗性指数在6.9~18.6之间,表明其抗性水平相对较低;而24-YN-2等5个种群的抗性指数达913.6~1438.6,显示出极强的抗性水平;其他14个种群的抗性指数在26.8~380.8之间。本研究首次系统表明:广东省稻田稗草对二氯喹啉酸的抗性问题已广泛存在,且不同地理种群间的抗性分布和强度差异显著,部分稗草种群对二氯喹啉酸产生极高水平的抗性。

关键词: 稗草, 二氯喹啉酸, 抗性分布, 抗性水平

Abstract:

To clarify the resistance distribution and resistance levels of Echinochloa crus-galli populations to quinclorac in different regions of Guangdong Province, the resistance frequencies of 71 E. crus-galli populations to quinclorac were determined using the whole-plant bioassay method, and the resistance levels of different resistant populations were characterized. The results showed that under the recommended dosage of quinclorac (375 g/hm2, active ingredient), the resistance frequency of 46 populations was 0, while the resistance frequencies of other 25 populations ranged from 10.7% to 100.0%, among which 13 populations exhibited a resistance frequency of 100.0%. Populations of E. crus-galli from Guangzhou, Foshan, Jiangmen, and Zhaoqing showed relatively high resistance frequencies to quinclorac, while most populations from Heyuan, Shaoguan, and Qingyuan remained susceptible. The resistance indices varied considerably among different resistant populations: six populations, such as 24-YD-2, showed resistance indices ranging from 6.9 to 18.6; five populations, such as 24-YN-2, showed resistance indices as high as 913.6 to 1438.6; and the other 14 populations showed resistance indices ranging from 26.8 to 380.8. This study provides the first systematic evidence that resistance to quinclorac in E. crus-galli from rice fields of Guangdong Province has become widespread, with significant variation among different geographic populations, and some populations have developed extremely high levels of resistance to quinclorac.

Key words: Echinochloa crus-galli, quinclorac, resistance distribution, resistance level

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