Comparative Study about Influence of Earthworm Composting and Aerobic Composting on Biogas Residue

摘要

Biogas residues were treated by earthworm composting and aerobic composting. The changes in organic matter, rapidly available nitrogen, rapidly available phosphorus and rapidly available potassium of biogas residues after the treatment by the two composting methods were measured to study the influence of different composting methods on biogas residue effect. The results show that biogas residues accord with the standards of organic fertilizer after the treatment by earthworm composting and aerobic composting. From the perspective of nutrient substances, earthworm composting is superior to aerobic composting.