The invention belongs to the field of energy conservation and emission reduction as well as waste resource utilization, and in particular relates to an organic-inorganic compound fertilizer special for corn and an energy conservation and emission reduction application method of the fertilizer. The application method is combined with a fertilizer production technology. According to the growth characteristics and nutrient demand of the corn, biomass power generation waste ash residue taking corn straw as a raw material, cultivation waste cow dung and an inorganic fertilizer are prepared into the organic-inorganic compound fertilizer special for the corn in a certain proportion. The preparation method of the organic-inorganic compound fertilizer is carried out according to the conventional organic-inorganic compound mixing production process and the obtained organic-inorganic compound fertilizer is used for planting the corns. The organic-inorganic compound fertilizer special for the corn has the characteristics that agricultural waste corn straw is a power generation raw material in the biomass power plant, and the waste ash residue produced by power generation of the corn straw, composted cow dung and the inorganic fertilizer are combined to prepare the fertilizer, thereby saving energy and reducing emission, saving fertilizer cost and providing an effective way for resource utilization of the wastes.