摘  要  【目的】 明确内吸性杀虫剂对番茄潜叶蛾Tuta absoluta生长发育和存活的影响，为其田间应用提供理论依据。【方法】 采用室内毒力测定法，评估7种内吸性农药对番茄潜叶蛾的毒力效果，并利用灌根法测定内吸性杀虫剂对番茄潜叶蛾生物学参数的影响。【结果】 氯虫苯甲酰胺、溴氰虫酰胺和四氯虫酰胺对番茄潜叶蛾幼虫具有较高毒力，其LC₅₀值分别为0.226、2.01和26.27 mg a.i./L；番茄苗期，溴氰虫酰胺、氯虫苯甲酰胺和四氯虫酰胺的灌根处理显著影响了番茄潜叶蛾的幼虫发育历期、蛹期和成虫寿命，尤其在2倍LC₉₀浓度处理下，番茄潜叶蛾卵全部死亡，不能正常孵化为幼虫，其发育天数均为0；该3种药剂的灌根处理显著降低了番茄潜叶蛾的卵孵化率、化蛹率及羽化率，在2倍LC₉₀浓度下，可使得番茄潜叶蛾在造成危害前即全部死亡。【结论】 3种内吸性杀虫剂（溴氰虫酰胺、氯虫苯甲酰胺和四氯虫酰胺）的灌根处理可使番茄苗成为“引诱陷阱”，预防早期番茄潜叶蛾的发生与为害，这种降低早期种群数量的措施极大降低了番茄潜叶蛾潜在的暴发风险，为科学治理番茄潜叶蛾提供了新方法。

Abstract  [Aim]  To investigate the effects of systemic pesticides on the development and survival of Tuta absoluta and thereby provide a theoretical basis for the application of these pesticides in the field. [Methods]  The toxicity of 7 insecticides on T. absoluta were tested in the laboratory using the indoor virulence determination method and the effects of systemic pesticides on the biological parameters of T. absoluta were analyzed using root drenching. [Results]  Cyantraniliprole, chlorantraniliprole, and tetrachlorantraniliprole were the most toxic of the pesticides tested, with LC₅₀ values of 0.226, 2.01, and 26.27 mg a.i./L, respectively. Root drenching with cyantraniliprole, chlorantraniliprole and tetrachlorantraniliprole at the tomato seedling stage significantly affected larval duration, pupal duration and adult survival, and eggs of T. absoluta died which could not hatch into larva normally, reducing this to zero at a concentration of 2-fold LC₉₀. Moreover, root drenching with these three insecticides significantly reduced the hatching rate, pupation rate and eclosion rate; a concentration of 2-fold LC₉₀ killed all insects before they could cause damage. [Conclusion]  Drenching the roots of tomato seedlings with cyantraniliprole, chlorantraniliprole and tetrachlorantraniliprole completely prevents the occurrence of T. absoluta at the tomato seedling stage. This degree of suppression greatly reduces the outbreak risk, and is a new method for the scientific control of this pest.