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早稻产量高低,往往受该地区的天气、气候条件影响,而天气、气候的变化主要受大气环流特征所决定,因此,我们直接用大气环流特征与我区早稻产量进行统计分析,建立早稻产量趋势预报模式。一、资料来源及处理大气环流特征的资料抄自区气象台《长期预报资料选编》,全区早稻平均亩产由区统计局或区农业局提供,用调和权重法和正交多项式法两种方法处理产量为趋势产量。气象产量用相对产量表示:
The output of early rice is often affected by the weather and climatic conditions in the region. The weather and climate changes are mainly determined by the characteristics of the atmospheric circulation. Therefore, we directly use the characteristics of atmospheric circulation and the output of early rice in our region for statistical analysis to establish the trend of early rice yield Forecast mode. I. Data Sources and Information on the Characteristics of Atmospheric General Circulation Copied from the “Long-term forecast data selection” of regional meteorological observatory, the average yield per mu of early rice in the whole region is provided by the district statistical bureau or the district agriculture bureau, with the methods of harmonic weighting and orthogonal polynomial Processing output is trend output. Meteorological output is expressed as relative output: