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棉铃虫的预测预报，就是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进行综合分析，估计棉铃虫未来的发生期、发生量、为害程度和种群发展趋势，提前提供虫情报告。由于棉铃虫的寄主作物多，在作物上发生的数量，随作物布局和作物发育阶段的不同变化很大。同时棉?
The prediction of cotton bollworm is based on the occurrence of cotton bollworm base, the progress of the crop phenology and meteorological data of a comprehensive analysis of estimates of the occurrence and development of cotton bollworm occurrence, degree and population trends in advance to provide insects report. Because of the host crop of Helicoverpa armigera, the number of crops on the crop varies greatly with crop layout and stage of crop development. At the same time cotton?