Results On average across China, the annual total N, P₂O₅ and K₂O input for potato was 252, 219, and 224 kg/hm², respectively. N 187 kg/hm², P₂O₅ 164 kg/hm² and K₂O 175 kg/hm² were from chemical fertilizer, and the left from organic fertilizer. The organic nutrients accounted for 25.8%, 25.6%, and 21.4% of the total N, P₂O₅ and K₂O inputs. Compound fertilizer was the main chemical fertilizer source in the surveyed potato fields, supplied 84.6%, 95.7% and 92.8% of chemical N, P₂O₅ and K₂O nutrients. And 82.9% of organic fertilizer was from livestock and poultry manure. Compared with the fertilizer rate recommended by NE system, the fertilizer nutrient reduction potential across China was about 47.0%, of which the N, P₂O₅, and K₂O reduction potential in the monocropping area of North China were 17.8%, 54.8%, and 55.2%; the P₂O₅ and K₂O reduction potential in the monocropping area of Northeast China were 64.6%, and 46.9%, respectively; the N, P₂O₅, and K₂O reduction potential in the monocropping area of Northwest China were 17.3%, 47.7%, and 21.5%, respectively. The reduction potential of N, P₂O₅, and K₂O were 7.4%, 51.6%, and 18.3% in the mono/two cropping area of Southwest China, and 31.1%, 69.7%, and 61.2% in winter season area of South China, respectively.