NOVELTY - Municipal domestic sludge is dehydrated, ground, and sieved to produce particles. Turfysoil and bagasse are added and stir-mixed. A colony of effective microorganisms is added and uniformly mixed. The mixture is subjected to stack retting fermentation, and the fermented sludge material is exposed, primarily dehydrated, and dried. The dried sludge material is ground and screened. Impurities are removed and inorganic materials are added and adequately mixed. The blended fertilizer material is pelletized, dried, cooled, screened and packaged.    USE - Production of sustained-release organic fertilizer for flowers.    ADVANTAGE - The method enables simple, environmental-friendly and economical production of sustained-release organic fertilizers using municipal domestic sludge, thus enabling effective usage of waste material, sludge reduction, and reclamation.    DETAILED DESCRIPTION - Municipal domestic sludge is dehydrated, ground using a grinder or crusher, and sieved to produce sludge particles having a grain diameter of 10 mm or less. Turfysoil (22-25%) and bagasse (5-8%) are added according to the volume of sludge and uniformly stir-mixed. A colony of effective microorganisms is added to the sludge material, and adequately stirred and uniformly mixed. The mixture is subjected to stack retting fermentation for 5-8 days, and the fermented sludge material is exposed, primarily dehydrated to reduce the water content, and then dried at a high temperature by using a dryer to further reduce the water content to less than 13%. The dried sludge material is ground using a grinder and then screened. Impurities are removed and inorganic materials are added and adequately mixed using a stirrer. The blended sustained-release organic fertilizer material is delivered to a circular-disc pelletizer, and the pelletized product is directly delivered to a roll-type secondary drier and dried until the water content is less than 10%. The secondarily-dried fertilizer particles are cooled, screened, measured and packaged.