Biochar-based fertilizers have potential application value in fertilizing soil and improving crop yield and quality. The effects of different blended biochar-based nitrogen(N) fertilizers on the yield，quality and nutrient absorption and its root zone soil chemical properties of open-field cabbage were investigated by the field plot experiment through setting five treatments of no N fertilizer(CK)，urea(U)，urea+biochar(BU)，urea+biochar+alkali lignin(JMZS-BU)and urea+biochar+alginate(HZS-BU). The results showed that the application of N fertilizer increased the yield，nitrogen and potassium uptake and nitrate content of the cabbage. Compared to the common urea treatment，the yield of Chinese cabbage in the three carbon-based urea treatments increased by 12.2%～27.9%，and the order of yield from high to low was HZS-BU>JMZS-BU>BU；Nitrate content in Chinese cabbage was cdecreased by 12.5%～24.9% and vitamin C(Vc) content was increased by 7.6%～30.9%. In addition，JMZS-BU treatment decreased nitrate content and increased Vc content in Chinese cabbage more significantly. All three carbon-based urea treatments increased the nitrogen，phosphorus and potassium uptake by Chinese cabbage compared to the U treatment，and the two types of blended carbon-based urea treatments，especially HZS-BU，showed a larger increment. Moreover，the carbon-based urea treatments increased soil EC，pH，organic matter，total nitrogen，mineral nitrogen，available potassium and available phosphorus，and increased the soil nutrient retention，which was more significantly in JMZS-BU. This helps to reduce the need for inorganic nutrient inputs for subsequent crops. The correlation analysis showed that，the increased cabbage yield was closely related to soil organic matter，available phosphorus and EC content. Therefore，alkaline lignin carbon-based urea(JMZS-BU)was recommended as the preferred fertilizer for open field cabbage production.