6 .5 %蚧螨双杀乳油 5 0 0 ,10 0 0及 15 0 0倍三个药液浓度对柑橘叶螨的防效 ,以 5 0 0倍液效果最好 ,施药后 1～ 15d防效达 6 9.2 %～ 79.5 % ,其次是 10 0 0倍液防效为 6 4.1%～6 9.6 % ,15 0 0倍液 ,防效为 6 4%～ 6 7.4% ,对照药剂 2 5 %噻嗪酮 10 0 0倍液和 2 0 %三氯杀螨醇 10 0 0倍液对柑橘叶螨防效较差 ,药后 1～ 15d防效在 6 0 .7%以下 The control effect of the three chemical concentrations of the five chemical pesticides at the rates of 500, 10 0 and 150 times on citrus spider mites was best at 50% and 1 ~ 15 days after spraying The control efficacy reached 6 9.2% -79.5%, followed by that of 100% solution with 6 4.1% -6.6%, 150% solution with the control efficiency of 6.4% -6.4% and the control agent 2.5% Buprofezin 10 0 0 and 20% dicofol 10 0 0 times against citrus spider mite control effect is poor, 1 ~ 15d after the drug control effect below 60.7%