关键词: 农产品贸易, 比较优势, 指数, 核密度

Abstract: By using four comparative advantage indices to analyze the changes of comparative advantage of 21 types of agricultural products, it is concluded that Anhui is still the export structure dominated by the main agricultural products in the past 20 years. Major agricultural products have stable comparative advantages, while nonmajor agricultural products have stable comparative disadvantages. From the perspective of trade supply, the change of Anhuis agricultural exports has not changed the fact that most agricultural products do not have comparative advantages, only some of them become less disadvantaged; from the perspective of supply and demand, the comparative advantages of agricultural products are still concentrated near the median point, and the positive changes are only part of the categories from the inferior to the lighter. It is necessary to construct the development strategy of classified trade of agricultural products based on comparative advantage.

Key words: agricultural trade, comparative advantage, index, kernel density