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油酸甲酯溶剂对阿维菌素乳油药效影响初报

郭瑞,白鸿岩,裴延飞,高薇,李硕,才玉石

Forest Pest and Disease（2018）

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Abstract
分别以油酸甲酯和二甲苯为溶剂制备1.8％阿维菌素乳油(EC),用闭口闪点试验器和旋转粘度计测定闪点温度和粘度,室内比较2种溶剂制备的1.8％阿维菌素EC 1500,2000,2500倍液对棉蚜Aphis gossypii Glover、美国白蛾Hyphantria cunea(Drury)、桑白蚧Pseudaulacaspis pentagona (Targioni-Tozzetti)的药效.结果表明:以油酸甲酯和二甲苯为溶剂制备的1.8％阿维菌素EC的闪点温度分别为170.4,29.8℃;粘度分别为5.5,4.3 mPa·s.在稀释倍数和药后时间相同时,油酸甲酯制备的1.8％阿维菌素EC对棉蚜、美国白蛾、桑白蚧的室内药效均高于二甲苯制备1.8％阿维菌素EC,油酸甲酯可以替代二甲苯,对1.8％阿维菌素EC具有增效作用.
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