Compound microbial agent for efficiently degrading corn straws at low temperature and application of compound microbial agent

The invention provides a compound microbial agent for efficiently degrading corn straws at a low temperature and application of the compound microbial agent. The compound microbial agent contains fivestrains, an enzyme capable of efficiently expressing and decomposing cellulose, hemicelluloses and lignin at a low temperature is obtained through creative screening and accumulation all the year around, the characteristics that the enzyme activity is insufficient at the low temperature and the straws are difficult to be composted and decomposed are broken through, the compound microbial agent can perform well at outdoor temperature of 1-6 DEG C, the composting time is prolonged by 2-3 days, and the compound microbial agent is particularly suitable for northern areas. 本发明的提供了种低温高效降解玉米秸秆的复合菌剂及制备方法，所述复合菌剂由5株菌株构成，通过长年创造性筛选和积累得到低温条件可高效表达分解纤维素、半纤维素和木质素的酶，突破低温酶活力不足，腐熟降解秸秆困难等特点，在室外温度1℃-6℃的环境下均表现优异，使腐熟天数提高了2-3天，特别适合北方地区。