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[目的]评估3种新型杀螨剂对山楂叶螨的防效。[方法]通过室内盆栽试验和田间药效试验,评价3种杀螨剂对山楂叶螨的防效。[结果]43%联苯肼酯悬浮剂和20%丁氟螨酯悬浮剂在药后3、5、7、14 d田间防治效果均高于85%,药后21 d田间螨口减退率在97%以上,表现出良好的速效性及持效性。110 g/L乙螨唑悬浮剂对害螨的速效性较差,但持效性好,药后21 d田间螨口减退率高于90%。[结论]43%联苯肼酯悬浮剂、20%丁氟螨酯悬浮剂和110 g/L乙螨唑是防治山楂叶螨有效药剂,可在大田适当轮换使用。
[Objective] The research aimed to evaluate the control effects of 3 new acaricides on hawthorn spider mites. [Method] The control effects of 3 kinds of acaricides on hawthorn spider mites were evaluated by indoor pot experiment and field efficacy test. [Result] The control efficacy of 43% bifenazate suspension and 20% bifenone suspension was higher than 85% in the fields of 3, 5, 7 and 14 days after treatment. The reduction rate of mites in 21 days after treatment was More than 97%, showing good speed and effectiveness. The 110 g / L etoxazole suspension was less effective against the harmful mites, but had better efficacy. The reduction rate of mite in the field 21 days after treatment was higher than 90%. [Conclusion] 43% Bifizinafloxacin SC, 20% Fofloxacin SC and 110 g / L Etoxazole are effective agents for control of hawthorn spider mites, and can be used properly in field.