【目的】筛选对梨小食心虫Grapholita molesta (Busck)卵具有高效触杀作用的药剂，旨在为梨小食心虫卵期的科学防治提供理论依据。【方法】 采用浸渍法室内测定了螺虫乙酯、阿维菌素、高效氯氰菊酯3种药剂及阿维菌素和高效氯氰菊酯分别与螺虫乙酯混配对梨小食心虫卵的触杀效果。【结果】 在供试药剂处理范围内，高效氯氰菊酯240 mg×g^﹣1处理对梨小食心虫卵的触杀效果最好，校正死亡率达96.42%，其次为高效氯氰菊酯120 mg×g^﹣1，60 mg×g^﹣1和高效氯氰菊酯与螺虫乙酯1︰2混配96 μg·g^﹣1处理，校正死亡率分别为81.70%、76.73%和70.72%。其余供试药剂处理对梨小食心虫卵的触杀效果均低于70%，特别是螺虫乙酯单用，或者阿维菌素与螺虫乙酯混用，或者高效氯氰菊酯与螺虫乙酯1︰4、1︰3混用，对梨小食心虫卵的室内触杀效果几乎均小于30%。【结论】 高效氯氰菊酯或高效氯氰菊酯与螺虫乙酯1︰2混配在生产中有较大的推广价值；螺虫乙酯或阿维菌素均不宜在梨小食心虫的卵期防治中单独使用。

 [Objectives]  To provide a theoretical foundation for controlling the oriental fruit moth Grapholita molesta (Busck) at the egg stage.  [Methods] Contact toxicities of three pesticides, including Spirotetramat, Abamectin and Beta-cypermethrin, as well as Abamectin-Spirotetramat and Beta-cypermethrin-Spirotetramat mixtures, on G. molesta eggs, were investigated using the dipping method in a laboratory. [Results]  240 mg×g^﹣1of Beta-cypermethrin was the most efficient pesticide regime for G. molesta eggs, achieving a corrected mortality rate of 96.42%. The next best were 120 mg×g^﹣1 and 60 mg×g^﹣1 of Beta-cypermethrin, and 96 mg×g^﹣1 of a 1︰2 mixture of Beta-cypermethrin and Spirotetramat, which had corrected mortality rates of 81.70%, 76.73% and 70.72%, respectively. The corrected mortality rates of all other treatments were < 70%. Corrected mortalities were all < 30% when Abamectin was used alone, or when it was mixed at a ratio of 1︰4 with Spirotetramat or Beta-cypermethrin-Spirotetramat, or 1︰3 with Beta-cypermethrin-Spirotetramat. [Conclusion] Beta-cypermethrin, or a 1︰2 Beta-cypermethrin-Spirotetramat mixture, can be widely used to control of G. molesta eggs but Abamectin or Spirotetramat alone are ineffective for this purpose.