美国是世界上最大的农产品出口国，出口市场决定美国农业的兴衰与农业生产经营者的利益。９０年代初，针对美国农产品国际竞争力减弱，出口数量下降的局面，美国一方面通过主导关贸协定乌拉圭回合谈判，主张降低并最终取消各国农产品关税，取消农产品贸易壁垒，推行自由贸易政 The United States is the largest exporter of agricultural products in the world. The export market determines the rise and fall of U.S. agriculture and the interests of agricultural producers and operators. In the early 1990s, in response to the weakening of the international competitiveness of U.S. agricultural products and the decline in the number of exports, the United States advocated reducing and eventually abolishing the tariffs on agricultural products of various countries, abolishing the barriers to agricultural trade, and implementing free trade policies by leading the Uruguay Round negotiations on the one hand,