The method of building firedamp pool gas by fermenting the straw was introduced. According to the rural biogas user lack of fermentation raw materials

the "Green stalks spirit" and ammonium bicarbonate was used to instead of human and animal excreta to dispose the straw. The technology of producing methane with the straw is easy and mature

the crude materials are widely

gassing fully. It has provides a reliable and effective solution for the user who is lack of raw material for fermentation.