Improving the degradation efficiency of corn straw can realize the comprehensive development and utilization of crop resources.Here,a micro-oxygen environment that simulated the rumen digestion mechanism of ruminants was constructed through intermittent aeration to improve the conversion rate of methane and other main components of biogas.The results showed that the methane conversion rate increased significantly when starch and corn straw were used as substrates for aeration.Especially when the substrate was corn stalk,the final volume of methane increased by 42.8％.In the 10 L automatic stirring glass fermenter system(the substrate is corn straw),after 360 hours of degradation reaction,the final volume of methane produced in the experimental group increased by 34.2％compared with that in the control group.It has certain reference value for solving the problem of corn straw degradation,realizing the research and utilization of new energy and the harmless treatment of agricultural waste.
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