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0前言在我省冬季气温最低的3个月中，农村沼气池池温一般在10℃一20℃之间，沼气微生物受到低温的影响，在无废热增温的条件下，沼气池产气量明显减少，同样数量的沼气原料产气量常常不及夏季的三分之一，远远满足不了农户的用气需求，发酵原料得不到充分的分解利用而被浪费。
0 Preface In the three months with the lowest winter temperature in our province, the pool temperature of rural digesters is generally between 10 ℃ and 20 ℃, and the biogas microbes are affected by the low temperature. Under the condition of no heat and waste warming, gas production in the digesters is obvious Reduce the same amount of methane gas production often less than one-third of the summer, Far far can not meet the gas needs of farmers, fermentation materials are not fully decomposed and wasted.