【摘要】 采用多年滑动平均法和曲线模拟法计算河南省五二农场小麦的趋势产量及气象产量,发现小麦气象产量波动振幅越来越大。本文试引入年份序数作为时间放大因子,以10月气象因子为例进行多元回归计算,结果表明此方法能明显提高计算的相关系数。更多还原

【Abstract】 Based on the data of winter wheat yields of the No. 52 farm in the Henan Province, the trend and the meteorological yields of winter wheat were calculated, by applying glide average and curve imitate methods. The results showed that the meteorological yield fluctuation of winter wheat became bigger. Introduced the year ordinal as time enlarge factor and taken the meteorological conditions in October as an example, the meteorological yield of winter wheat were calculated by the multiple regression analysis. This method could significantly rise the coefficients of the calculations.更多还原