红铃虫被认为是棉花生长后期危害棉花最重要的害虫之一。在埃及,虽然杀虫剂对棉叶夜蛾(Spodoptera littoralis)的联合作用作了许多工作,对棉铃虫(Heliothis armigera)的联合作用也作了一些工作,但关于杀虫剂混合制剂对棉红铃虫(Pectinophora gossypiella S.)田间品系的相互作用至今还没有资料可得。而为发展理想的害虫防治计划来降低红铃虫的虫口密度,这类资料是必不可少的。 Red bollworm is considered to be one of the most important pests that endanger cotton in the later stages of cotton growth. In Egypt, although much work has been done on the synergistic effect of insecticides on Spodoptera littoralis, some work has been done on the synergistic effect of Heliothis armigera. However, Interaction between the field strains of Pectinophora gossypiella S. has not been reported yet. Such information is indispensable for the development of an ideal pest control program to reduce the population density of pink bollworm.