The field experiment of soil erosion was conducted. With increasing amounts of N and P fertilization, soil erosion and runoff yields are decreased gradually. Losses of soil organic matter and total nitrogen in sediment reached a minimum under the fertilization of 55 2kg N/ha ad 90kg P 2O 5/ha. However, when 55 2kg N/ha and 45kg P 2O 5/ha were used, soil available N loss was decreased to a minimum of 27 9kg/ha. The decrease in soil N loss in erosion was due to crop absorbing of soil N.
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