大豆为一年生草本植物,原产我国,栽培已有几千年的历史。现主产地有东北、山东、河北、宁夏等地区,它们是我国大豆的传统出口基地。大豆兼有粮食、油料和饲料等多种用途,是现有作物中蛋白质含量最高的。籽粒中含有大约40%—50%的蛋白质,18%—20%的脂 Soybean annual herb, native to China, cultivation has been thousands of years of history. The main producing areas are the northeast, Shandong, Hebei, Ningxia and other regions, which are the traditional export bases of China’s soybean. Soybeans combine multiple uses, including grain, oilseeds and feedstuffs, with the highest protein content in existing crops. The grain contains about 40% -50% protein, 18% -20% fat