【摘要】 文章从国家、区域、省级单元三个层面对中国近9年的粮食生产状况进行量化分析,构建粮食生产变化模型,量化近年来中国不同尺度上粮食增产因素.研究结果表明:1)近9年来中国粮食已经提前实现新增500亿kg生产能力的目标,国内粮食产量能够满足全国粮食消费量,粮食主产区在实现国家粮食安全保障中承担重要作用;2)主产区区域层面上粮食主产区的三个地区粮食贡献存在较大区域差异;3)近9年来在国家层面、区域层面和省级层面上粮食增产原因各异.更多还原

【Abstract】 In order to illustrate the spatial difference in grain production and demand over time, this paper analyzed the grain production of China on national, regional and provincial scale in recent 9 years from 2008 to 2016 based on quantitative analysis. In order to find the main reason for the change of grain produce in China, a model of Grain Production Increase was set up and and the contribution of change of sown area and yield per unit area were calculated. The result shows that:(1)China has achieved its goal of increasing grain production of 50 billion kilograms before 2020, the domestic grain output can meet the national grain consumption, and major grain-producing areas play an important role in national food security;(2) on regional scale, there are great regional differences in the contribution of grain providing in the main grain-producing areas;(3) the cause of grain production increase is different on national, regional and provincial scales, and policy of grain production should based on further analysis of regional differences.更多还原