【目的】 为了明确延迟交配对马铃薯块茎蛾Phthorimaea operculella Zeller繁殖的影响。【方法】 在室内条件下，设置雌雄延迟交配、雄虫延迟交配和雌虫延迟交配3种处理，观察延迟交配不同天数后马铃薯块茎蛾的交配率、交配持续时间、繁殖力和成虫寿命的变化情况。【结果】 在3种延迟交配的情况下，延迟交配5 d的交配率均是最低，且与雌虫延迟交配相比，雄虫延迟交配和雌雄虫延迟交配对交配率的影响更明显。延迟交配对卵孵化率和产卵量均有明显的不利影响，其中雌雄延迟交配、雄虫延迟交配、雌虫延迟交配三者的均在延迟交配2 d时的产卵量最高，在延迟交配5 d时的产卵量最低，且两性延迟交配、雌虫延迟交配之间有显著差异。此外，受到延迟交配的影响雌雄虫寿命均有所增加，并且与单一性别对寿命的影响而言，两性延迟交配对寿命的影响更为明显，与雌虫相比雄虫更容易受到延迟交配的影响。【结论】 延迟交配会对马铃薯块茎蛾的繁殖有明显不利的影响，可以对迷向法对马铃薯块茎蛾防治提供一定的参考。

[Objectives]  To determine the effects of delayed mating on the reproduction of the potato tuber moth Phthorimaea Operculella (Zeller). [Methods]  The effects of delaying the mating of both males and females, or of delaying the mating of either males or females, for different numbers of days, on mating rate, mating duration, fecundity and adult lifespan, were compared under laboratory conditions. [Results]  Irrespective of which sex was prevented from mating, delaying mating for 5 d produced the lowest mating rate. Compared to delaying the mating of females, the effect of delaying the mating of males, or of both sexes, on the mating rate was more obvious. Delayed mating had obvious adverse effects on the hatching rate and the number of eggs laid. Irrespective of which sex was prevented from mating, egg production was highest when mating was delayed for 2 days, and lowest when it was delayed for 5 days. Delaying mating by 5 days resulted in a significant difference in egg production when mating by both sexes had been delayed compared to when mating by females only had been delayed. In addition, the lifespan of both sexes was higher when mating was delayed, and compared to delaying the mating of just one sex, the effect of delaying mating by both sexes on lifespan was more obvious. Males were more susceptible than females to the effects of delayed mating. [Conclusion] Delayed mating has significant adverse effects on the reproduction of potato tuber moths, which suggests that there is some scope for controlling this pest by disrupting mating.