| 近30年我国粮食产量增减变化及主要影响因素 |
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| 引用本文： | 郝泽英.近30年我国粮食产量增减变化及主要影响因素[J].山西农业科学,2009,37(5):3-6. |
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| 作者姓名： | 郝泽英 |
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| 作者单位： | 太原市粮食局,山西,太原,030012 |
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| 摘 要： | 应用距平值法对我国1978—2007年的粮食单产及其影响因素进行分析,结果表明,作物单位面积产量是影响我国粮食总产变化的主要因素,它受作物品种及相应技术的影响呈周期性变化规律,而政策因素则显著影响粮食作物播种面积的增减。
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| 关 键 词： | 粮食产量 距平值 影响因素 |
The Increasing and Decreasing Changes and Its mainly Affecting Factors of Chinese Grain Production Near 30 Years |
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| HAO Ze-ying.The Increasing and Decreasing Changes and Its mainly Affecting Factors of Chinese Grain Production Near 30 Years[J].Journal of Shanxi Agricultural Sciences,2009,37(5):3-6. |
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| Authors: | HAO Ze-ying |
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| Institution: | HAO Ze-ying ( Grain Department of Taiyuan City, Taiyuan 030012, China) |
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| Abstract: | In this paper, unit area yield of grain production in Ehina from 1978 to 2007 and its main affecting factors were analysized using distance apart from average. The result indicated that the total grain production wasmainly affected by per unit area yield for grain crop and the unit area yield had a periodical change with corresponding use of crop variety and other technique and the increase and decrease of the sowing area of the grain crop was notably affected by a policy factor. |
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| Keywords: | Grain production Solving by distance apart from average Affecting factor |
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