Effects of methane fermentation residues(MFR) on soil improvement

It helps stalks to return to field when the residues from methane fermentation are used as fertilizers.The residues are not only high quality fertilizers,but also can improve soil.The functions of the residues in improving soil physi-chemical properties and granular structures,activating microelements and micro-organisms in soil can increase crop production by 10 to 30%.