不同稗草对禾草丹敏感性的测定

Study on Sensitivity of Different Barnyard Grass Populations to Thiobencarb

采用滤纸法测定了宁夏稻田39份稗草对禾草丹的敏感性。结果表明,不同稗草种群对禾草丹的ED_(50)值在18.045 1~11 832.321 7μL/L,抗性指数在1.0~101.5,宁夏稻田稗草对禾草丹具有较高的抗药性。

The sensitivity of 39 barnyard grass populations to Thiobencarb was determined by filter paper method. The results showed that ED50 values of different barnyard grass populations ranged form 18.045 1 to 11 832.321 7 μL/L and resistance indexes ranged from 1 to 101.5. Barnyard grass in paddy field of Ningxia was high resistant to Thiobenearb.