A composite of compound manure for a green tract of land

摘要

Provided is a soil mixture composition comprising fermented soil from sewage sludge or livestock excrement and porous charcoal in specified ratio useful for formation of green field to prevent loss of soil and provide ideal condition for growth of tree and green field formation. The soil mixture composition comprises 75 wt.% of fermented soil obtained from excrement or straw in livestock pen and/or sewage sludge from water treatment installation; 15-20 wt.% of organic excrete soil generated from earthworm; and 5-10 wt.% of charcoal. The fermented soil further includes 15-35% water content through breaking process when the sewage sludge or excrement in the livestock pen is under the fermentation process. The soil composition has a feature of the charcoal emitting electron to reduce oxidation (including decomposition or corruption) but increase deoxidization, thereby retaining original condition of materials for long term.