Abstract: A field test on applying phosphate fertilizer to spring peanuts was carried out. The results indicated that the maximum peanut output was 628.18 kg/667 m² (9422.7 kg/hm²) and the best economic yield was 628.16 kg/667 m² (9422.4 kg/hm²) while the optimum application rate of phosphate fertilizer was at 3.62 kg/667 m² (54.3 kg/hm²).