3种不同杀虫剂对德国小蠊的药效测定

目的测定优士、拜虫杀、卫得对德国小蠊的药效。方法采用强迫接触法,测定3种杀虫剂对德国小蠊的药效及60 d和120 d后的残效。结果当施药剂量分别在优士5~20 ai mg/m2,拜虫杀5~20ai mg/m2,卫得5~20 ai mg/m2时在玻璃板和瓷砖板上有较好的击倒和致死作用,120 d后72 h死亡率达90%以上。结论3种杀虫剂在油漆板面上效果均较差,使用时应适当增加施药剂量。

Efficacy of three kinds of insecticides against Blattella germanica

Objective To study the efficacy of Youshi, Responsar and Vedei against Blattella germanica. Methods Forcibly contacting. The efficacy of three insecticides and continuing efficacy after 60 days and 120 days were determined. Results When the dosages of Youshi, Responsar and Vedei were all 5 - 20 ai mg/m^2, most of Blattella germanica were knocked and killed on glass and ceramic tile. The 72 h mortality were above 90% after 120 days. Conclusion The mortality of three insecticides on paint were poor. The dosages should increase when the insecticides were used on paint. Youshi, Responsar and Vedei had good efficacy against Blattella gerrnanica.