| 农业技术扩散的时间过程及空间特征分析——以陕西省苹果种植技术为例 |
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| 引用本文： | 李普峰,李同昇,满明俊,李树奎.农业技术扩散的时间过程及空间特征分析——以陕西省苹果种植技术为例[J].经济地理,2010,30(4). |
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| 作者姓名： | 李普峰 李同昇 满明俊 李树奎 |
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| 作者单位： | 西北大学,城市与环境学院,中国陕西,西安,710127 |
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| 基金项目： | 国家自然科学基金项目(编号:40871068)资助 |
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| 摘 要： | 农业科学技术只有被广大农民掌握和应用,才能转化为现实生产力,促进农业生产的发展。以陕西省苹果种植技术为例,借助"S型曲线模型"及"重力学模型"对陕西省苹果种植的时空规律进行了研究,发现陕西省苹果种植在时间序列上,其种植面积呈现在波动中上升的趋势,而在空间上,存在等级扩散与渐进扩散相结合的扩散模式,即随着空间尺度的缩减,技术扩散由明显的规模等级扩散向随距离增加扩散强度减弱的渐进式扩散转化。
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| 关 键 词： | 苹果种植技术 时空规律 S型曲线 辐射强度 陕西 |
TIME-PROCESS AND SPATIAL CHARACTERISTICS ABOUT AGRICULTURAL TECHNOLOGY DIFFUSION——A CASE STUDY OF SHANNXI APPLE-PLANTING TECHNOLOGY |
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| LI Pu-feng,LI Tong-sheng,MAN Ming-jun,LI Shu-kui.TIME-PROCESS AND SPATIAL CHARACTERISTICS ABOUT AGRICULTURAL TECHNOLOGY DIFFUSION——A CASE STUDY OF SHANNXI APPLE-PLANTING TECHNOLOGY[J].Economic Geography,2010,30(4). |
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| Authors: | LI Pu-feng LI Tong-sheng MAN Ming-jun LI Shu-kui |
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| Abstract: | Tacking the apple-planting technology of Shannxi as an example, the space-time laws about apple-planting is studied in this paper with s-shape curve model and gravity model. It is found that the area of Shannxi apple-planting shows an upward trend in the fluctuations in time series, and there is a combined pattern of hierarchical diffusion and progressive diffusion on spatial sequence. In macrocosmic, the radiation intensity of demonstration area increases with distance, showing decreasing effect of long-di... |
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| Keywords: | apple-planting technology space-time laws s-shape curve model radiation intensity shaanxi |
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