Comparison of the crop productivity,water and soil erosion and nutrient loss from runoff was conducted in different rotation patterns on slope farmland under farmer's common fertilization practice in Danjiangkou reservoir area.The results showed that,the highest crop productivity and the highest economic income were obtained in 'wheat-maize' and 'oilseed rape-maize' pattern,respectively,amongst the five rotation patterns;The total amount of runoff and soil erosion,and the amount of total phosphorus(TP) and ...