The rapid development of the region also have a positive impact on food security,mutual trade between countries can reduce costs to improve efficiency,and ultimately win. In this paper,through the comparative advantage of the six countries of the Greater Mekong Subregion's main agricultural trade was estimated that each country has a comparative advantage to find agricul tural products,to provide some policy recommendations for the future of the regional agricultural trade and food security,but also toidentifytheconditionwhetherthecomparativeadvantageliesinthesituationthatthescaleoftradeissmallbetweentheregions.%通过对大湄公河次区域的6个国家主要农产品贸易的比较优势进行测算,找到各国具有比较优势的农产品,为今后该区域在农产品贸易和粮食安全方面提供一些政策建议,同时也找出该区域国家中是否存在比较优势差异时贸易规模却较小的情况。
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