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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2002, Vol. 3 Issue (2): 223-227    DOI: 10.1631/jzus.2002.0223
Biotechnology & Life Sciences     
Aluminum extractability in red soils as influenced by land use patterns
YE Lan-jun, XIE Zheng-miao, HUANG Chang-yong, XU Jian-min
Institute of Soil & Water Resources and Environment, Zhejiang University, Hangzhou 310029, China
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Abstract  This study on the effect of land use on soil quality in relation to forms and toxicity of aluminum in red soils (Ultisol) in southeast China showed that in general, the extractable order for soil active aluminum by four extractants was: NaOH 0.5 mol/L > HCl 1 mol/L > NH4Ac 1 mol/L > KCl 1 mol/L. Different uses of the red soils, developed from Quarternary red clay with the similar hydrogeological environment, greatly affected the amount of active aluminum, especially the exchangeable Al3+. The order of exchangeable Al3+ (Al mg/kg) in the red soils with different land uses was: barren land (740) > tea garden (663) > peach garden (432) > citrus garden (234) > paddy soil (127). The content of water soluble aluminum in the red soils was highly sensitive to soil acidity.

Key words： Aluminum form      Land use      Red soil      Ultisol      Soil quality     
Received: 05 January 2001     
CLC:  S153  
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XIE Zheng-miao
YE Lan-jun
HUANG Chang-yong
XU Jian-min
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YE Lan-jun, XIE Zheng-miao, HUANG Chang-yong, XU Jian-min. Aluminum extractability in red soils as influenced by land use patterns. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2002, 3(2): 223-227.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2002.0223     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2002/V3/I2/223

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