摘要： 播娘蒿是小麦田恶性杂草之一,目前生产上用苯磺隆对其已经无法有效防治,播娘蒿对苯磺隆产生了抗药性。为了明确河北省小麦田播娘蒿对苯磺隆的抗药性水平及分布情况,2009年在河北省境内冬小麦田采集了154份播娘蒿生物型种子。采用温室整株测定法测定了播娘蒿不同生物型对苯磺隆的反应。试验结果筛选到敏感材料30个生物型,抗性材料124个生物型,其中中、高抗性材料84个生物型。在石家庄、衡水、沧州、邯郸、邢台、保定、廊坊等7市区的小麦田均有抗药性播娘蒿发生,其中,中、高抗性播娘蒿发生率分别为62%,58%,57%,33%,55%,69%,50%。目前,河北省境内抗药性播娘蒿发生已经较为严重,中、高抗药性播娘蒿发生率达到55%。

关键词: 播娘蒿, 苯磺隆, 抗药性

Abstract: Flixweed is a malignant weed of wheat fields.Producers found tribenuron-methyl failure for flixweed control.Flixweed has evolved resistance to tribenuron-methyl.The objective of this study is to confirmation the resistant level and distribution of flixweed to tribenuron-methyl in Hebei province,and 154 biotypes of flixweed were collected from winter wheat fields.Whole-plant pot experiment was conducted to confirmation the response of different flixweed bioyypes to tribenuron-methyl.The results showed that there were 30 susceptible biotypes and 124 different resistant level biotypes of the collected 154 biotypes,and middle and high resistant level flixweed was 84 biotypes.Flixweeds in the winter wheat fields of Shijiazhuan,Hengshui,Cangzhou,Handan,Xingtai,Baoding and Langfang urban areas had evolved resistant to tribenuron-methyl,and the middle and high resistant level rate was 62%,58%,57%,33%,55%,69% and 50%.Currently,resistant flixweed occurred in Hebei Province has been more serious,middle and high resistant level rate was 55%.

Key words: Flixweed, Tribenuron-methyl, Resistance

中图分类号: 

• S451.1