Sour ensiling corn stover is used in the experiment group and the general ensiling maize stover is used in the control group.

• 以酸贮玉米秸秆(添加复合有机酸)为试验组日粮粗饲料,以一般青贮玉米秸秆为对照组日粮粗饲料饲喂奶牛,探讨酸贮玉米秸秆的饲喂效果。