摘要
本文根据岭回归分析,结合逐步回归方法,以回归系数的估计精度和残差平方和作为两种目标函数,建立了冬小麦拔节——抽穗水期分盈亏量的长期预报模式。以期为预报农业气象干旱提供参考依据。
In this paper an. long-range forecast mode of the diferenee between precipitation and evaporation at jointing-earing stage of the winter wheat is established according to ridge regression analysis and successive regression, by estamating precision of the regression coefficient and residual sum of squares. It is useful toprecautu-ion argometeorological drought.
出处
《气象科学》
CSCD
北大核心
1990年第4期409-415,共7页
Journal of the Meteorological Sciences
