Abstract: The study aims to confirm the yield-increasing effect of alginic acid compound fertilizer of summer maize. Taking‘Xundan 29’as the material, we conducted a field experiment by using mathematical statistics and comparison analysis method, to study the effect of alginic acid coated blend bulk fertilizer, average nutrients common blend bulk fertilizer, alginic acid coated compound fertilizer and average nutrients common compound fertilizer on yield, aboveground biomass, nutrient accumulation, SPAD of summer maize in Hebi and Xuchang. The results showed that the yield of summer maize increased significantly by 8.80%-15.41% and 21.21%-35.85% with the application of fertilizer in Hebi and Xuchang, respectively. Compared with average nutrients common blend bulk fertilizer, the alginic acid coated blend bulk fertilizer increased yield by 5.70% and 5.22%, respectively. Compared with average nutrients common compound fertilizer application, the yield under the application of alginic acid coated compound fertilizer increased significantly by 5.98% and 13.37%, respectively. Applying alginic acid compound fertilizer could improve chlorophyll content, 1000-grain weight, grain number of summer maize and promote nitrogen, phosphorus and potassium nutrient accumulation. The accumulation of nitrogen, phosphorus and potassium increased by 3.76%- 17.03% , 6.29%- 27.14% and 3.70%-9.33% respectively. When fertilizer application was reduced by 20%, the difference on yield was not significant. Considering the summer maize yield, fertilizer inputs and environmental pressure, the application of alginic acid compound fertilization 600 kg/hm2 is recommended in north and central Henan.