关键词: 功高, 印鼠客蚤, 灭效

Abstract: Objective The paper reported the results of study on the toxiticy of cyhalothrin to Xenospylly cheopis in laboratory.Methods The residual smearing method was used.Results(1) The KT₅₀ was getting shorter with the concentration gradually creasing,and the death rates of 24 h were getting higher.(2) When the concentration of cyhalothrin were 12.50 mg/L,25.00 mg/L,50.00 mg/L and 100.00 mg/L,the KT₅₀<6 minutes,and the knock down rates of 11 minutes >(63.0%),the death rates of 24 h>84.0%.(3) When the concentration of cyhalothrin were 50.00 mg/L and 100.00 mg/L,the shoot down rates of 30 minutes in 450 days were 100% and the death rates of 24 h in 450 days >93.0%.Conclusion The toxicticy of cyhalothrin to Xenospylly cheopis is very good and cyhalothrin can be used to control the plague in field.