Corn stalk contains high percentage lignocellulose, which is not biodegradable to anaerobic bacteria, leading to low digestion rate and biogas yield.

• 作物秸秆的特点是木质纤维素含量较高，而厌氧微生物的木质纤维素降解消化能力较弱，导致秸秆厌氧消化率低、产气量少，从而限制了作物秸秆生物气生产的大规模应用。