盐城市家蝇抗性动态分析及其防制对策

目的：掌握家蝇抗性动态变化，为控制抗性的发生与发展提供科学依据，方法：微量点滴法，结果：1995－1998年盐城市家蝇对敌敌畏，氯氰菊酯的抗性虽仍处在高抗水平，但总体上抗性呈下降趋势，对二氯苯醚菊酯的抗性处在中低抗水平，除射阳县外，均呈下降趋势；对溴氰菊酯的抗性均处于中低抗水平，且市区，建湖两个监测点呈逐年下降趋势。已接近敏感水平。结论：根据家蝇抗性动态变化，及时采取综合防制，交替轮换或镶嵌用药等措施，可控制抗性的发生与发展。

Study on the Dynamic of Resistance and Its Management Strategies for Housefly in Yancheng City

Objective:To find out the dynamic of resistance in housefly and provide the scientific evidance to control the appearance and development. Method:The trace drop method was used. Results:The resistance to Dichlorovos and Cypermethrin was in high level from 1995 to 1998, but it did not develop and came to decline in the whole; The resistance to Phenothrin was modial or low level. All of them came to decline except Sheyang county; The resistance to Deltamethrin was lower in urban district of Yancheng city and Jianhu came to decline and to sensitive level. Conclusion:According to the appearance and development of the resistance the integrated prevention measures including reasonable drug used should be taken.