在沼气发酵原料中,青草是一种糖分含量较高、易于消化的原料,在低浓度时产气较快,浓度较高时则会因酸的大量积累而引起发酵液的酸化。为了掌握青草的沼气发酵规律和适宜的浓度,我们于1981年9月3日至10月20日进行了青草中温沼气发酵实验。现将实验结果简要报告如下。 In biogas fermentation raw materials, grass is a high sugar content, easy to digest raw materials, gas production at low concentrations faster, the higher the concentration of acid will result in a large number of acidification of fermentation broth. In order to master the biogas fermentation law and the appropriate concentration of grass, we carried out the grass mid-temperature biogas fermentation experiment from September 3 to October 20, Now the experimental results are briefly reported as follows.