陕西杨凌洛川山楂叶螨的抗药性测定

Studies on the Insecticide-resistance of Tetranychus Viennensis Zacher in Yangling and Luochuan of Shaanxi

采用 FAO规定的玻片浸渍法 ,测定了杨凌和洛川地区苹果山楂叶螨对 6种杀螨药剂的抗药性。结果表明 ,杨凌地区的山楂叶螨尚未产生明显的抗性 ,洛川地区山楂叶螨对这 6种药剂的抗性不同 ,对灭扫利较敏感 ,相对抗性倍数仅为 3.0 0 ;对甲基 1 6 0 5、氧化乐果、久效磷表现为中抗 ,相对抗性倍数分别为 1 2 .33、9.83、1 8.98;对三氯杀螨醇和克螨特的相对抗性倍数为 2 7.6 1、2 6 .4 4,达高抗水平。

By means of the slide dip method recommended by FAO, the baseline of Tetranychus viennensis Zacher to 6 kinds of insecticides and mietcides were estabilished, according to the susceptible strain of the mite on apple trees in Jiangzhang. The level of the insecticide-resistance of the mites population were tested.The results showed that the mite displayed no resistane to 6 kinds of pesticides in Yangling and obvious resistance to these pesticides except fenpropathrin in Luochuan.