[Objective] The research aimed to investigate the feasibility of compost and bran instead of peat as a carrier of functional microbial inoculants. [Method]The air-dried compost,bran and peat were used as a carrier for liquid microbial inoculants by producing different ratios of microbial fertilizer. The changes of microbial number and p H in the carrier at different stages were studied. [Result]Air-dried compost had no significant difference compared with peat in appearance,touch-feeling and microbial numbe...