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1.引言美国大豆工业自二十世纪八十年代起,通过一项由美国大豆协会国际市场部(ASA-IM)和美国大豆出口委员会的国际销售计划,已经支持开发以投喂颗粒饲料为基础的
1. INTRODUCTION Since the 1980s, the U.S. soybean industry has adopted an international marketing plan led by the International Association of Soybean Associations (ASA-IM) and the U.S. Soybean Export Board, which has supported the development of feedstock-based pellets of