Cotton bollworm( Helicoverpa armigera Hübner) is the most important loss causing insect pest in the cotton area in China.It has 4～5 generations per year and has caused serious damage to the staple crops recently in Hebei Province.The cotton bollworm disaster fluctuates mainly with the varying local climate.An integrated meteorological method was established to fully express the climatic influence on cotton bollworm to forecast and analyze the cotton bollworm occurrence in Hebei Province.(1)Eight climat...