【目的】 探究氯虫苯甲酰胺对草地贪夜蛾Spodoptera frugiperda亲代（F₀）和子一代（F₁）的亚致死效应，为草地贪夜蛾的防治和氯虫苯甲酰胺的合理使用提供理论依据。【方法】 采用饲料拌毒法测定氯虫苯甲酰胺对草地贪夜蛾的毒力，利用生命表技术研究了氯虫苯甲酰胺对草地贪夜蛾F₀代和F₁代生长发育及繁殖的亚致死效应。【结果】 与丙酮对照相比，LC₂₅的氯虫苯甲酰胺处理后草地贪夜蛾F₀代雌蛾产卵量显著下降（P < 0.05）、成虫寿命显著延长（P < 0.001）；F₁代4龄和5龄幼虫历期和成虫寿命均显著延长（P < 0.05），雌蛾产卵前期及总产卵前期显著延长（P < 0.05），而产卵期显著缩短（P < 0.05），产卵量（P < 0.001）和卵孵化率（P < 0.05）均显著下降；此外，F₁代种群净增值率（R₀）显著降低（P < 0.05），平均世代周期（T）显著延长（P < 0.05）。【结论】 LC₂₅的氯虫苯甲酰胺显著影响草地贪夜蛾的生长发育和繁殖，并抑制其种群增长，对草地贪夜蛾综合防治策略的制定有积极意义。

[Objectives]  To determine the sublethal effects of chlorantraniliprole on the F₀ and F₁ generation of Spodoptera frugiperda and thereby provide a theoretical basis for the rational use of chlorantraniliprole to control this pest. [Methods]  The feed mixing method was used to determine the toxicity of chlorantraniliprole to S. frugiperda, and its sublethal effects on the development and reproduction of the F₀ and F₁ generations were studied using life tables. [Results]  Treatment with a sublethal concentration (LC₂₅) of chlorantraniliprole significantly reduced (P < 0.05) the fecundity and increased the longevity (P < 0.001) of F₀ females compared to the acetone-control. The duration of the 4th and 5th larval instars and adult longevity of the F₁ generation were significantly longer (P < 0.001), as were the pre-oviposition period (APOP) and total pre-oviposition period (TPOP) (P < 0.05). The oviposition period was significantly shorter than that of the control (P < 0.05). The oviposition period, fecundity (P < 0.001) and hatch rate (P < 0.05) of F₁ females were significantly less than in the control group, and, in addition, the net reproductive rate (R₀) of the F₁ generation was significantly lower (P < 0.05) and the average generation cycle  (T) significantly longer (P < 0.05). [Conclusion]  The results suggest that sublethal concentrations of chlorantraniliprole can inhibit the population growth of S. frugiperda, which could contribute developing a comprehensive control strategy for this pest.