The paper introduces the methods of drying and pycnometer for sediment yield of total precipitation erosion of observation model and validates the reliability of the measurement through check tests of sediment concentration with different particle sizes 摘要介绍了测量模型次降雨侵蚀产沙量的烘干法和密度瓶法,并通过不同粒径组泥沙浑水含沙量的对比试验,验证了测量方法的可靠性。