Research on the nutrient loss from purple soil under differentrainfall intensities and slopes

With simulated rainfall equipment, the pattern of soil nutrients from purple soil under different rainfall intensities and slopes was studied Results showed that the majority of soil nutrients was removed with runoff and sediment The content of nutrients in the runoff was not interrelated with rainfall intensity and slope, but with the amount of runoff The content of nutrients in the sediment was not interrelated with the rainfall intensities There was negative correlation between the slope and the content of nutrients in the sediment The nutrient loss was in direct proportion to the amount of sediment and runoff The content of nutrients in the sediment was slightly higher than that in the surface soil before rainfall, but exceedingly higher than that in the runoff Because the nutrients in the runoff mainly consisted of available ones, the nutrient loss via runoff could not be neglected