摘要
[目的]科学有效控制观赏玫瑰朱砂叶螨的为害,明确45%螺螨酯·乙螨唑悬浮剂对观赏玫瑰朱砂叶螨的防治效果。[方法] 2014—2015年在山东省烟台市依照田间药效试验准则进行田间药效试验。[结果] 45%螺螨酯·乙螨唑悬浮剂30~60 mg/kg剂量处理,药后14 d对玫瑰朱砂叶螨的防效在94.15%以上,优于对照药剂110 g/L乙螨唑悬浮剂20 mg/kg和1.8%阿维菌素乳油12 mg/kg的防效,与对照药剂240 g/L螺螨酯悬浮剂50 mg/kg防效无显著差异。[结论] 45%螺螨酯·乙螨唑悬浮剂可有效防治观赏玫瑰朱砂叶螨,具有较好的应用价值。
[Aims] The study aims to scientifically and effectively control Tetranychus cinnabarinus(Boisduval) in ornamental rose and to confirm the efficacy of spirodiclofen·etoxazole 45% SC on T. cinnabarinus. [Methods] According to guidelines on efficacy evaluation of pesticides, the field trials were conducted in Yantai city of Shandong province during 2014-2015. [Results] The results showed that the control efficacy of spirodiclofen·etoxazole 45% SC against T. cinnabarinus at 30-60 mg/kg was over 94.15% after 14 d, which was corresponding to spirodiclofen 240 g/L SC(50 mg/kg), and performed better control effect than etoxazole 110 g/L SC at dosage of 20 mg/kg and abamectin 1.8% EC at dosage of 12 mg/kg. [Conclusions] Spirodiclofen·etoxazole 45% SC could effectively control T. cinnabarinus in the field and had practical application.
引文
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