大豆(学名:Glycine max (Linn.) Merr.)通称黄豆,属一年生草本,高30~90厘米,是中国种植面积和产量最高的豆类作物。根据大豆的种子种皮颜色和粒形分为五类:黄大豆、青大豆、黑大豆、饲料豆、其它大豆。大豆最常用来做各种豆制品、榨取豆油、酿造酱油和提取蛋白质,豆渣或磨成粗粉的大豆也常用于禽畜饲料。既是重要的粮食作物,又是重要的油料作物。作为最大的粮食进口品种,及时研判中国大豆市
This paper assesses the economic benefits of green manuring and the potential costs. It also investigates the circumstances in which green manuring will be profitable and those that result in losses t