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Title: |
The Analysis of Soil Nutrients in Reclamation District Filling by Coal Gangue with Different Thickness of Covering Soil |
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Source: |
International Workshop on Diffuse Pollution-Management Measures and Control Technique (IWDCT 2010 E-BOOK)
(pp 263-265)
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Author(s): |
Jia-Ping Yan, School of Earth and Environment Science, Anhui University of Science and Technology Huainan City, 232001, China
Hui-Ping Liu, School of Earth and Environment Science, Anhui University of Science and Technology Huainan City, 232001, China
Wen Fan, School of Earth and Environment Science, Anhui University of Science and Technology Huainan City, 232001, China |
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Abstract: |
Taking Xinzhuangzi and Datong reclaimation district in Huainan Coal Mining Area for example.Collect samples from reclamation soil which is filled by coal gangue with different thickness of covering soilaccording to the method of grid. Study soil texture, organic matter, hydrolyzable nitrogen, available phosphorusand available potassium of different reclaimed soil. The results show that the soil nutrient show a rising trendwith the increase of the covering thickness from 40cm to 75cm, when higher than 75cm, the soil nutrient is closeto the contrast soil. Comparing the 75cm with 90cm, the change of soil nutrient content appears randomly, withno significant increase. Therefore, the covering thickness of 75cm is the best for reclaimed land filled with coalgangue. There is a high content of sand particle (diameter>0.01mm) in reclaimed land filled with coal gangue,causing the poor ability of preservation of fertility and water, and the easily loss of diffluent nutrients. Themanagement measures such as reasonable fertilization and irrigation is essential to efficient use of reclaimedland.
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