在对传统的仅考虑效率比较优势和规模比较优势的农作物综合比较优势理论分析研究的基础上, 引入地区劳动力优势指数、农业机械化优势指数和市场设施优势指数, 将传统理论予以扩展使其可更为全面、客观地反映地区某农作物的比较优势。在此基础上, 本文应用近6年来国家和上海市农业统计年鉴数据和《第二次农业普查主要数据公报》, 分别计算了传统及改进后的上海市主要粮食作物综合比较优势均值, 并进一步对上海郊区主要粮食作物种植的结构调整和规模效益优化工作给出了一些建议。

To study the comparative advantage of main crops in Shanghai, we first improved the traditional method of measuring comprehensive advantage.Then we used the improved comprehensive advantages indices method to analyze the efficiency advantage indices, the scale advantage indices, the labor advantage indices, the mechanization indices, the market infrastructure advantage and aggregated advantage indices of four crops.Results showed that the order of aggregated advantage was:rice, wheat, soybean, corn.In the end, we gave some suggestions on adjusting the structure of crops’ planting in Shanghai.