The many years experiments in slope farmland show that effects tendency of fertilizer is as follows,MNPMNNPMPNCK,the effects of applying mixed fertilizer is superion to applying single fertilizer,and the effect of applying organic matter mixed with NP is the best,the mutual effects among N,P and M are most powerful,the value of it reached 669 kg/hm2,the crop yield keeps consistent with the nutrient absorbed.Soil organic matter has no obvious change and total N content is decreased as applying single fertilizer,soil organic matter and total N content is increased as applying organic matter mixed with fertilizer.Soil valid N content is decreased as a long-term applying fertilier,but applying organic matter may alleviated this decreasing tendency.Applying P may enhance the soil valid P obviously