中国五大水稻主产区稗草对8种常见除草剂的抗性水平评估
打开文本图片集
关键词：稗草;抗药性;整株生物测定法；中国五大水稻主产区;防治策略中图分类号：S451.21;S481+.4;S482.4;Q945.7 文献标志码：A 文章编号：1003-935X（2026）01-0053-08
Evaluation of Resistance Levels of Echinochloa Weeds to Eight Commonly Used Herbicides in Five Major Rice - Producing Regions of China
SONG Xuehui， WANG Yu，WANG Weixiang，MIN Xiangfen，MENG Chen，LIANG He，GE Jiacheng，ZHANG Zongjian （Hailir Pesticides and Chemicals Group Co.Ltd，Qingdao 266Ooo，China）
Abstract：To systematicall evaluate resistance characteristics of Echinochloa weeds populations in China's five major rice- producing regions.In2022，a total of18 Echinochloa weedspopulations werecolected from the Northeast， Northwest，Midle-Lower Yangtze Plain，Southwest，and South Chinaregions.Whole-plant bioassayswere conducted todetermine theirresistancelevels toeightcommonlyused herbicides with five diffrent modesof action： clomazone，oxaziclomefone，penoxsulam，pyribenzoxim，metamifop，cyhalofopbutyl，quincloracandpropanil.Results showed that Echinochloa weeds populations in the Northeastregion exhibited medium resistance to penoxsulam， pyribenzoximand quinclorac，butremainedsensitive toallother tested herbicides.PopulationsintheNorthwest exhibitedsensitivityorlowresistance toalltestedherbicides.Populations in the Middle-LowerYangtzePlainshowed lowto medium resistance to oxaziclomefone，clomazone and quinclorac，medium to high resistance to cyhalofopbutyl， metamifop，andpropanil，but were sensitive to penoxsulam，pyribenzoxim.Populationsinthe SouthwestandSouth regions displayed mediumresistance to cyhalofopbutyl，metamifop，and propanil，and showed noresistanceoronly low resistance to theremaining herbicides.A clear northtosouth increasing risk patern of Echinochloa weeds resistance was observedacross China.Inconclusion，management strategies must beadaptedto localconditions.Innorthernregions， the focusshould beon“prevention”through croprotationand pre emergence applicationsto protect herbicide sensitivity.In southernregions，the emphasis should shift to“control”using rotational mixingand integrated measures to control the development of multiple resistance.
Key words：Echinochloa weeds;herbicideresistance;whole-plant bioassay;five major rice-producing regions of China ; management strategy
我国水稻种植历史悠久，种质资源丰富，水稻种植面积仅次于印度，同时也是世界第一大水稻生产国和主要稻米出口国之一[1-2]。（剩余7674字）