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《Journal of Soil Water Conservation》 2002-01
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Research on Soil Potassium Loss by Erosion in Loess Area

PENG Hao, ZHANG Xing chang, SHAO Ming an (Institute of Soil and Water Conservation,Chinese Academy of Sciences andMinistry of Water Resources,Yangling,Shaanxi 712100)  
With artificial simulative washing test on different slope, the soil potassium loss by erosion in loess area was preliminarily studied. Results showed that the concentration of ionic K increases with the increase of slope. The relationships between slope and amount of K loss can be expressed by the exponential functions. The different forms of potassium were enriched in sediment. K mainly migrated with sediment in unsolvable forms, while slowly available K chiefly removed with soil.
【Fund】: 国家重点基础研究发展规划资助项目 (G2 0 0 0 0 1860 5 );; 国家杰出青年科学基金资助项目 (4 0 0 2 5 10 6)
【CateGory Index】: S157.1
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