Abstract: A test on straw incorporating to field and reducing fertilizer application in winter cropping potato was carried out. The results showed that the potato yield of the treatment, which straw incorporation was 334 kg/667 m² (5010 kg/hm²), the application of nitrogen, phosphorus and potassium reduced by 10%, 10%, 10%-20% respectively, was slightly increased or equal to the control, and its economical benefit was higher.