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Acta Prataculturae Sinica ›› 2014, Vol. 23 ›› Issue (6): 61-68.DOI: 10.11686/cyxb20140608

• Orginal Article • Previous Articles     Next Articles

Phosphorus contents in the rhizosphere and bulk soil under Amorpha fruticosa established in different years

LI Jin-hui,LU Xin,ZHOU Zhi-yu,ZHAO Ping,JIN Qian,ZHOU Yuan-yuan   

  1. State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral AgricultureScience and Technology, Lanzhou University, Lanzhou 730020, China
  • Received:2012-09-07 Online:2014-12-20 Published:2014-12-20

Abstract: The rhizosphere and bulk soil of Amorpha fruticosa established in different years were studied. Available phosphorus (P), total P and P fractions were analysed using the method of Hedley which was a soil P classification method revised by Tiessen. Available P levels in the rhizosphere were higher than those out of the rhizosphere. The Y60 had the highest inorganic P content than the other except for H2O-Pi and Conc. HCl-Pi. The NaHCO3-Pi, NaOH-Pi, NaHCO3-Po, NaOH-Po, and Conc. HCl-Po in the rhizosphere were higher than those in bulk soil in different aged Amorpha except for NaHCO3-Po in Y28. Available P in the rhizosphere had a significant relationship with Dil. HCl-Pi and Conc. HCl-Po. H2O-Pi and total P had a significant relationship. Available P and pH in the rhizosphere and out of the rhizosphere did not have a significant relationship with total P in the rhizosphere.

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