上海地区稻田无芒稗对丁草胺抗药性的测定  

Identification of Echinochloa crus- galli var. mitis Resistant to Butachlor from Paddy Fields in Shanghai

作　　者：温广月[1] 钱振官[1] 李涛[1] 沈国辉[1] 刘益君 

机构地区：[1]上海市农业科学院生态环境保护研究所,上海201403 [2]北京五洲恒通认证有限公司,北京100068

出　　处：《杂草科学》2015年第3期34-36,共3页Weed Science

基　　金：上海市科委基础研究重点项目(编号:12JC1407900)

摘　　要：为了明确上海地区稻田无芒稗对丁草胺的抗药性水平,采用室内萌发试验测定丁草胺对不同采集地点稗草的抗性指数。结果表明,丁草胺对上海地区稻田无芒稗的EC50值在0.10~0.65μg/m L之间,抗性指数在1.47~9.49之间,其中抗性指数3~5之间样本数占总体样本的66.67%,抗性指数相对较高的地区主要集中在上海东部、西部和南部各郊区。Laboratory experiments were conducted to determine resistance levels to butachlor among biotypes of Echinochloa crus- galli var. mitis collected in paddy areas of Shanghai. The half effective concentration EC50 value for butachlor among the biotypes ranged between 0. 10 and 0. 65 μg / m L; the resistance indexes were between 1. 5 and 9. 5,among which 64% had resistance indexes between 3 and 5. The sampling sites where relatively higher levels of resistance were found chiefly distributed in the east,west,and south suburban districts of Shanghai.

关 键 词：上海地区 无芒稗 丁草胺 抗药性 水稻田 

分 类 号：S451.2[农业科学—植物保护]