Abstract:To investigate the effects of fertilizing and tillage on characteristics of runoff yielding, the plantation mode "winter wheat-summer maize" was taken as the research object. Five treatments were set up, which were CK(T0), combined application of manure and fertilizer(T1), chemical fertilizer(T2), chemical fertilizer with increasing fertilization(T3) and contour tillage with chemical fertilizer(T4). The characteristics of runoff yielding were studied in runoff plots from 2008 to 2012. Results are as follows: Runoff induced rainfall occurred from May to September in the purple soil area, with the maximum runoff observed in June. Runoff was relatively consistent with rainfall. Runoff depths ranged from 9.57 to 100.36 mm and runoff coefficients, from 0.05 to 0.19. Both average annual runoff depths and average annual runoff coefficients were presented in the order of T0 > T3 > T2 > T1 > T4. The fertilization treatments reduced runoff by 25.90% to 47.50% as compared with the CK and T4, by 25.46% as compared with T2. Annual rainfall in relation to annual runoff can be expressed by a power function. Differences in annual runoff and runoff coefficient between the treatments are significant according to variance analysis. Fertilization, tillage and rainfall are the main factors influencing runoff.