日期玉米蛋白粉豆粕价差（蛋白粉-豆粕）比值2024/03/057576.3-1.31.372024/03/047476.5-2.51.352024/03/017374.7-1.71.362024/02/297274.7-2.71.352024/02/287275.1-3.11.342024/02/277175.6-4.61.312024/02/267176.