陕西省耕地和粮食生产力变化的区域差异分析

随着经济和社会的快速发展 ,陕西省的耕地面积和粮食生产发生了很大变化。由于自然和人为因素的影响 ,耕地的数量、质量在时空上存在较大差异 ;科技进步等人文因素对各个区域的粮食单产造成不同程度的影响 ,这些都直接影响到陕西省 1 1个区域的粮食生产水平的分异。本文从陕西省各个区域 1 949～ 2 0 0 2年的耕地面积、粮食产量及粮食播种面积等农业统计资料出发 ,分析了陕西省耕地面积和粮食生产力变化的区域差异 ,并简要分析了其变化的原因 ,从而为陕西省的农业发展 ,尤其是粮食生产的发展提供了科学的决策依据。

Regional Difference in Cultivated Land and Grain productivity in Shaanxi Province

s With the development of economy and society, the area of cultivated land and grain production in ShaanXi province have changed greatly. Because of the nature and human factors, the quantity and quality were different in time and region; and human factors like science and technology also had a different effects on grain production every areas, which resulted in difference of grain productivity in eleven areas on ShaanXi. Based on long-series agriculture statistics of cultivated area , grain yield from 1949a to 2002a , this paper analyzed the difference of the quantity change of cultivated land area and grain productivity change and reveal its causes, which is expected to provide scientific foundation for making decision of protectingcultivated land and improving agriculture production, especially grain production in ShaanXi province.