| 论施肥系统工程 |
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| 引用本文： | 张世英.论施肥系统工程[J].系统工程理论与实践,1993,13(1):0-0. |
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| 作者姓名： | 张世英 |
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| 作者单位： | 江苏农学院@成敬生$江苏农学院@沈新平$江苏农学院 |
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| 摘 要： | <正> 施肥是作物增产的重要手段。尤其是化肥施用,已成为现代农业生产中一项重要的技术措施。据联合国粮农组织以及各国专家的估计,粮食增产量中,30％～60％应归功于化肥的施用。中国农科院土壤肥料研究所张夫道等统计分析了我国解放后三十年农作物产量后指出,我国粮棉总产水平
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| 关 键 词： | agricultural system engineerin |
Method of C-LFilter Combining Forecasts |
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| Zhang Shiying Li Guofu.Method of C-LFilter Combining Forecasts[J].Systems Engineering —Theory & Practice,1993,13(1):0-0. |
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| Authors: | Zhang Shiying Li Guofu |
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| Institution: | Department of Agronomy, Jiangsu Agricultural College) |
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| Abstract: | In this paper a new method of C-L filter Combining forecasts is presented. Through applying the method, and comparing it with the methods of single-model adaptive forecast and another method of time-varying weights combining forecasts, it is concluded that the method is an effective, convenient and less risky method of combining forecasts. |
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| Keywords: | combined forecast adaptive forecast C-L filter |
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