棉铃虫在喀什地区一年发生4代,又因为棉铃虫是杂食性害虫,寄主作物种类多,同时具有迁飞性和滞育性,给棉铃虫的预测预报技术带来很大的困难。近年来伽师县植保站根据棉铃虫的发生基数、发育进度、作物的物候期和气象资料等进行综合分析,以此预测棉铃虫未来的发生期、发生量、危害程度和种群发生趋势,提前提供虫情预报,为做好防治提供科学依据。一、越冬代蛹的预测1.越冬调查冬前选择不同寄主作物类型(棉花、玉米、小麦、苜蓿、蔬菜)和棉铃虫发生轻重不同的3～5块条田进 The occurrence of cotton bollworm in Kashgar region for 4 generations a year, and because the bollworm is a omnivorous pest, host more species, both migratory and diapause, to the bollworm forecasting technology has brought great difficulties. In recent years, Jiashi County plant protection station based on the occurrence of cotton bollworm base, developmental progress, crop phenology and meteorological data were analyzed in order to predict the occurrence of cotton bollworm in the future, the occurrence, the extent of harm and population trends, early Provide insect forecast, provide a scientific basis for prevention and treatment. First, overwintering pupal forecast 1. Overwintering survey before the winter to choose different host crop types (cotton, corn, wheat, alfalfa, vegetables) and cotton bollworm occurred in different light weight 3 to 5 fields