Abstract: In order to explore the effect of PASP-Zn application rate on reducing fertilizer application and increasing effectiveness during the planting process of summer maize, this study took Zhengdan 958 as the test sample, and took the application dosage of PASP-Zn and nutrient supply level as variables to conduct statistics and analysis on dry matter accumulation, nutrient utilization, and agronomic indicators related to maize yield of summer maize in North China. Research found that within the experimental range, an increase in the dosage of PASP-Zn can effectively increase the dry matter accumulation rate（The rate of increase T1-T9 were-0.58%～9.70%） and nutrient utilization（mainly nitrogen and phosphorus） of summer maize; The application of PASP-Zn can effectively increase maize yield（The rate of increase T1-T9 were 3.44%-20.42%）, mainly increasing the thousand grain weight（The rate of increase T1-T9 were 6.83%-11.89%）, and also improving the number of grains per ear（The rate of increase T1-T9 were 1.39%-7.93%）. In the analysis of agronomic indicators related to nutrient utilization, the experiment found that under the conditions of conventional fertilization or weight loss of 15%, the dosage of 1.5 kg·ha^-1 PASP-Zn can achieve good results. However, under the condition of reduced fertilization of 30%, it was necessary to increase the dosage of PASP-Zn to 3.0 kg·ha^-1 to ensure its synergistic effect.Therefore, agricultural practitioners can reduce the application of nitrogen and phosphorus and use PASP-Zn in the process of summer maize planting in North China.