The inhibitory effect of PP333 on hatch of cotton bellworm eggs was highter than that of DCP, but the effects of DPC on larval growth and oviposition preference were stronger than that of PP333.

• 多效唑对棉铃虫卵孵化的抑制作用比缩节胺强，而缩节胺对棉铃虫幼虫发育及成虫产卵选择性的影响较大。