通过应用国内资源成本法和综合比较优势指数法对中国主要粮食产品生产区域比较优势的测定和差异分析，验证了中国粮食生产区域比较优势存在着很大的差异，中国可以也应当引导各地区按照比较优势的原理进行农业生产结构的调整，实现农业生产的合理布局和专业化生产，以充分发挥农业生产的比较优势。%The paper applies the two methods of DRC and AAI in measuring and analyzing the comparative advantage of main grain crops in China.The result of research testifies that there are great differenees in comparative advantage among various regions in China.The Chinese government can and should completely exploit the comparative advantage and gain from specialization in agricultural production,by gui ding the producers to adjust their production structure according to the law of comparative advantage.Meanwhile,the paper gives scientific and direct support to grain production re-arrangement among regions and varieties.
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