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[目的]明确45%哒螨灵·啶虫脒可湿性粉剂不同剂量对苹果黄蚜的防控效果,验证对苹果树和非靶标有益昆虫等的安全性,确定适宜的施药时期、用量和方法。[方法]采用常规喷雾法进行田间药效试验。[结果]45%哒螨灵·啶虫脒可湿性粉剂使用有效成分量为56.25 mg/kg,可以有效防治苹果黄蚜的发生,药后7 d防效可达到99.76%。[结论]45%哒螨灵·啶虫脒可湿性粉剂防治苹果黄蚜高于目前常用农药的防效,对苹果树生长、有益天敌种类和数量都无不良影响。
[Objective] The research aimed to clarify the control effect of different doses of 45% pyridaben acetamiprid WP on apple yellow aphids, verify the safety of apple tree and non-target beneficial insects, and determine the suitable application period, method. [Method] The field efficacy test was carried out by the conventional spraying method. [Result] The effective dose of 45% pyridaben acetamiprid WP was 56.25 mg / kg, which could effectively prevent and cure the occurrence of apple aphid. After 7 d, the control effect reached 99.76%. [Conclusion] The control efficacy of 45% pyridaben acetamiprid WP was higher than that of the currently used pesticides, and had no adverse effect on apple tree growth, beneficial natural enemy species and quantity.