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- W763304003 abstract "Sulfur,calcium,and magnesium are essential elements in plant and play very important functions in physiology and plant nutrition.Based on the long-time stationary experiment,the changes of soil sulfur,calcium and magnesium were studied under a condition of 22-year alfalfa succession in Loess Plateau.The results show that the contents of total sulfur,available sulfur,water soluble sulfur,adsorbent sulfur,HCl soluble sulfur,total inorganic sulfur,and organ sulfur in tilth soils,after long-time P-fertilizer application,increased by 9.41%,62.41%,47.51%,30.07%,2.25%,5.38%,and 17.54%,respectively.The contents of total sulfur,available sulfur,water soluble sulfur,adsorbed sulfur,HCl soluble sulfur,total inorganic sulfur,and organic sulfur in tilth soils,after long-time NPM-fertilizer application,increased by 20.89%,98.31%,68.44%,57.34%,8.07%,12.54%,and 37.69%,respectively.The contents of total calcium,available calcium,water soluble calcium,exchangeable calcium,and HCl soluble calcium in tilth soils,after long-time P-fertilizer application,increased by 4.64%,4.27%,11.66%,4.05%,and 8.59%,respectively,but the content of residual calcium decreased by 2.21%.The contents of total calcium,available calcium,water soluble calcium,exchangeable calcium,and HCl soluble calcium in tilth soils,after long-time NPM-fertilizer application,increased by 8.69%,8.30%,51.59%,6.73%,and 27.77%,respectively,but the content of residual calcium decreased by 26.23%.The contents of total magnesium,available magnesium,water soluble magnesium,exchangeable magnesium,HCl soluble magnesium,and residual magnesium in tilth soils,after long-time NPM-fertilizer application,increased by 7.38%,61.98%,63.16%,61.85%,5.81%,and 8.97%,respectively.Two peaks of available sulfur in soil profiles were detected with a transportation trend of available sulfur to deep soil layers.Additionally,the eluviation and accumulation of available calcium and magnesium occurred in soil profiles." @default.
- W763304003 created "2016-06-24" @default.
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- W763304003 date "2009-01-01" @default.
- W763304003 modified "2023-09-24" @default.
- W763304003 title "Effect of Long-term Alfalfa Succession on Soil Sulfur,Calcium,and Magnesium in the Loess Plateau" @default.
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