Added 0.3% (NH4)2HCO3 into the rotted straw can advance the biogas yield of rural biogas digester significantly, during anaerobic digestion process.

• 把0.；3%25的碳酸氢铵添加到堆沤过的谷草内；在厌氧消化过程中可显著提高沼气池的产气量。与已堆沤过的谷草加猪、牛粪比较；产气量提高100%25。