NOVELTY - Microbial-organic fertilizer comprises (in pts.wt.): corral manure (50-70), poultry dung (5-10), plant straw (15-30), effective microorganisms bacterial spawn (1-7), oil cake (5-10), Chinese herbal medicine seed (1-2), whole grass and Chinese herbal medicine leaf (1-2) and water soluble antibiotic (0.2-0.7).    USE - Microbial-organic fertilizer used for co-culture of rice-duck i.e. rice-duck farming (claimed).    ADVANTAGE - The microbial-organic fertilizer ensures increased efficiency, removes harmful insect and kills insect eggs and parasites in duck body, and prevents high agricultural chemical pollution to rice, duck and rice field.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing microbial-organic fertilizer, which involves:    (A) preparing raw materials by collecting corral manure (single or mixed corral manure of pig, cattle, sheep and horse dung), poultry dung (single or mixed dung of chicken and goose), plant straw (cut and crushed wheat straw, rice straw, corn straw, sorghum stalk and grass stalk), effective microorganisms bacterial spawn and oil cake;    (B) crushing oil cake into particles with grain size not more than 100-mesh;    (C) using Chinese herbal medicine seed;    (D) drying and crushing the medicine into particles with grain size not more than 100-mesh;    (E) using whole grass and leaf of Chinese herbal medicine;    (F) drying and crushing the medicine into particles with grain size not more than 100-mesh;    (G) using water soluble antibiotic;    (H) mixing the raw materials uniformly;    (I) fermenting the mixture by stacking it with water proof material;    (J) stacking the mixed materials into bar stacks with a height of 0.3-0.8m and a width of 0.8-1.2m;    (K) fermenting the materials for 30-45 days to increase temperature of stack core up to 60-65 degrees C;    (L) drying the materials and adding the antibiotic to it;    (M) spreading the fermented bar stacks for airing;    (N) adding 0.2-0.7 parts of ivermectin or abamectin after obtaining moisture content of 15-20% in the stack; and    (O) mixing, spreading and packaging the materials uniformly to obtain product.