一是提高发酵浓度,以料补温。一般季节的发酵浓度为6～8%,而冬季应提高到10%以上,因为在低温影响下,沼气微生物的活动能力下降,发酵原料分解速度减慢,提高发酵原料的浓度,实行以料补温,能促进原料发酵,提高产量。二是适当添加一些热性原料。如经过预处 First, improve the fermentation concentration, to make up for the temperature. Fermentation concentration in the general season is 6 ~ 8%, while in winter should be increased to 10%, because under the influence of low temperature, the activity of biogas microorganisms decreased, the decomposition rate of fermentation raw materials slowed down, increase the concentration of fermented feedstock, Temperature, can promote the fermentation of raw materials, increase production. The second is appropriate to add some thermal materials. Such as after the pre-order