| 用带周期分量的逐步回归模型预测冬小麦产量的试验 |
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| 引用本文： | 王春乙,潘亚茹.用带周期分量的逐步回归模型预测冬小麦产量的试验[J].气象,1989,15(8):22-25. |
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| 作者姓名： | 王春乙 潘亚茹 |
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| 作者单位： | 气象科学研究院;气象科学研究院 |
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| 摘 要： |
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| 关 键 词： | 周期分量 回归模型 冬小麦 产量 |
An approach to winter wheat yield prediction using a model with orthogonal factors and periodic components |
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| Abstract: | Since the prediction model is influenced by the multicolinearity of the selected factors and the unstability of the correlated coefficient, principal component analysis is used in this paper. Along with the compound factors of pricipal components of primary selected factors and the periodic components of prediction factors as well as the principal components itself, a stepwite regression model for predicting winter wheat yield in the major winter wheat areas of North Chian is established. Both its fitness and feasibility are better than those of the ordinary stepvvise regression models. |
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