Study on Effects of Nitrate Accumulation in Soil Profile and Leaching Losses under Simulated Rainfall

[Objective] The research aimed to study the accumulation and leaching level of nitrate nitrogen in soil profile.[Method] Winter wheat planting experiment in the field was carried out to analyze the water content and nitrate concentration under different rainfall intensity and fertilization.[Result] The effective rainfall intensity and soil fertilization level affected the migration of soil nitrogen in the soil and leaching.The greater rainfall intensity of soil was,the higher the level of fertilization was.The soil type caused significant loss of nitrogen nitrate.In addition,soil texture types also played an important role in the loss of soil nitrogen.The stronger the soil texture sand was,more obvious its leaching effect was.[Conclusion] Soil fertilization level and rainfall intensity had important impacts on soil nitrogen loss.