棉铃虫发生趋势的气象等级预报方法

Forecast method of meteorological grade of Helicoverpa armigera occurrence trend.

通过分析山东省各代棉铃虫历年实际发生情况和其对应的气象条件,用数理统计方法对棉铃虫发生发展具有影响的气象因子进行筛选,确定各影响因子的影响权重系数,并划分与棉铃虫发生等级相对应的气象因子影响等级域值,由此,构建了棉铃虫发生趋势的气象等级预报模型,为棉铃虫的防治提供科学依据。

Through the analysis of the historical data of Helicoverpa armigera occurrence and corresponding meteorological conditions in Shandong Province, the main meteorological factors affecting the occurrence of H. armigera were selected, and their affecting weight coefficients were determined by statistic method. Based on these, the grading domain values of the meteorological factors corresponding to the occurrence grades of H. armigera were set off, and the forecast model of meteorological grade of H. armigera occurrence trend was constructed, which could offer a scientific basis for the control of H. armigera.