摘要:为明确菵草(Beckmannia syzigachne Steud)对精噁唑禾草(fenoxaprop-P-ethyl)的敏感性。采用整株生侧法测定了江苏地区14个不同菵草种群对精噁唑禾草灵的敏感水平。结果表示,测试的14个菵草种群中有4个抗性种群,抑制中剂量高于田间推荐剂量4-6倍,相对抗性倍数为10-40,呈中等抗性。25569 毕业论文关键词:菵草;生物测定;敏感性;抗性水平
Study on sensitivity of Beckmannia syzigachne populations to fenoxaprop-p-ethyl.
Abstract:In oder to Clear the sensitivity of Beckmannia syzigachne to fenoxaprop-p-ethyl. This study have tested the sensitivity of 14 different Beckmannia syzigachne populations in Jiangsu to fenoxaprop-p-ethyl with the method of Whole plant bioassay .Results show that there are 4 species very effective against fenoxaprop-p-ethyl , inhibition in doses higher than 4-6 times the recommended dosage in field, the relative resistance ratio was 10-40, is moderate resistance.
Key words :Beckmannia syzigachne; bioassay; sensitivity; resistance
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