With straw and wheat bran as the main raw material,the optimum condition of solid state fermentation for trichoderma koningii to produce cellulose was studied by single-factor experiment in room temperature.It included nitrogen source,inoculum concentration,the additive amount of wheat bran,water content,fermentation time and initial pH that were studied.The results showed that the optimum fermentation conditions in room temperature were as follows:nitrogen source was urea,additive amount 3% and inoculum co...