Based on chemical fertilizer application, we studied effects of combining application biochar and organic fertilizer on crops planting and nutrients loss in dryland, which aimed to further explore the effective ways of rational fertilization, high yield and high efficiency planting and the optimal utilization of resources in dry land crops under the conditions of high temperature and precipitation in the hilly region of southern China. Field plot experiments were conducted to investigate the effects of biochar and organic fertilizer on maize yield, nitrogen-phosphorus loss derived by surface runoff and fertilizer utilization efficiency, and five fertilization treatments were set up, which were non fertilization (CK), only chemical fertilizer application (CF), chemical fertilizer combined with biochar (CF+B), chemical fertilizer combined with organic fertilizer (OF+CF) and chemical fertilizer combined with biochar and organic fertilizer (OF+CF+B). The results showed that compared with CF, the application of biochar or organic fertilizer could significantly increase the yield of 8.2%~11.1%, but the combination of organic fertilizer and biochar was the best, and the yield increased by up to 13.7%. Compared with the CF treatment, the treatment of CF+B could significantly reduce the runoff losses of nitrogen and phosphors by 15.9% and 24.2%, respectively, and significantly increase the aboveground accumulation of nitrogen and phosphorus by 26.3% and 11.8%, respectively. The OF+CF treatment could significantly reduce the runoff losses of nitrogen and phosphorus by 17.5% and 25.0%, respectively, increase the nitrogen and phosphorus accumulations by 36.5%(P<0.05) and 8.2% (P>0.05), respectively. The runoff losses of nitrogen and phosphorus were significantly reduced by 33.3% and 35.2% in the treatment of OF+CF+B, respectively, and aboveground accumulations of these two nutrients were increased by 52.1% (P<0.05) and 29.0% (P>0.05), respectively, and this treatment presented the highest fertilizer utilization efficiencies of nitrogen and phosphorus, up to 49.1% and 26.4%, respectively. On the one hand, OF+CF+B could promote the growth of spring maize, increase vegetation coverage and enhance erosion resistance of the soil, significantly reduce the volume of surface runoff; on the other hand, this treatment could reduce runoff loss of soil nitrogen and phosphorus including the dissolved and particulate, increase soil fertility. Therefore, comprehensive considering the economic and environmental benefits, applicating biochar and organic fertilizer combined with partial chemical fertilizer is the most reasonable way of fertilization, and it is worth promoting and applying in the region.