In order to obtain excellent cellulose-decomposing complex microorganisms for decomposing rice-straw returned to soil, the studies on the screening of cellulose-decomposing microbes mixture from different ecological soils were conducted. The results showed that an excellent cellulose-decomposing microbial mixture was acquired. It could decompose filter paper in short time and was mainly composed of part-anaerobic bacteria. Its CMC-Na eellulase activities were higher than filter paper cellulase activities. When it was used to decompose rice-straw powder added with 0. 1% urea concentration, the ...