浙江省灰飞虱对吡虫啉、锐劲特和毒死蜱的抗药性监测

Resistance monitoring of the smaller brown plathopper,Laodelphax striatellus fallen to imidacloprid,fipronil and chlorpyriphos in Zhejiang province

为明确浙江省灰飞虱抗药性的发展趋势，采集了浙江省不同地区的灰飞虱，监测其对吡虫啉、锐劲特和毒死蜱的抗药性水平。结果表明，浙江省内灰飞虱对吡虫啉已经产生一定抗性，余姚地区最高达到6倍；对于锐劲特和毒死蜱抗性水平较低，其中锐劲特的抗性倍数为1．8～2．8，毒死蜱为1．5～2．4。

The resistance of the smaller brown planthopper（ SBPH）, L. stritellus, collected from different locations in Zhejiang province, to imidaclopfid, fipronil and chlorpyriphos, was studied. Results indicated that SBPH in Zhejiang Province had higher resistance to imidaeloprid, and the resistance of Yuyao SBPH population was up to 6 times. All SBPH populations collected had lower resistance to fipronil and chtorpyriphos, Resistance of SBPH to fipronil was 1.8 - 2.8 times and to chlorpyriphos was 1.5 - 2.4 times as compared to susceptible population.