不同种植年限紫穗槐根际非根际土壤磷组分含量特征

doi:10.11686/cyxb20140608

摘要/Abstract

摘要： 以不同种植年限的紫穗槐根际和非根际土壤为试验对象, 采用Tiessen等修正后的Hedley土壤磷素分级方法,对其有效磷、全磷及不同形态磷组分进行了分析研究。结果表明,不同年限根际土壤有效磷含量均高于非根际土壤。从无机磷含量特征可以看出除了H₂O-Pi(水溶磷)和Conc.HCl-Pi(浓 HCl提取无机磷)外,其余无机磷均是Y₆₀的含量最高。不同形态磷:除Y₂₈的NaHCO₃-Po(0.5 mol/L NaHCO₃提取有机磷)外,其他株龄的NaHCO₃-Pi(0.5 mol/L NaHCO₃提取无机磷),NaOH-Pi(0.1 mol/L NaOH提取无机磷),NaHCO₃-Po,NaOH-Po(0.1 mol/L NaOH提取有机磷),Conc.HCl-Po(浓 HCl提取有机磷)含量均是根际高于非根际土壤相应磷指标含量。根际土壤有效磷与Dil.HCl-Pi和Conc.HCl-Po含量显著相关(P<0.05),H₂O-Pi与Total-P含量显著相关(P<0.05),根际和非根际土壤有效磷与pH值和根际全磷含量相关性均不显著(P>0.05)。

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.

中图分类号:

S812.29

李金辉,卢鑫,周志宇,赵萍,金茜,周媛媛. 不同种植年限紫穗槐根际非根际土壤磷组分含量特征[J]. 草业学报, 2014, 23(6): 61-68.

LI Jin-hui,LU Xin,ZHOU Zhi-yu,ZHAO Ping,JIN Qian,ZHOU Yuan-yuan. Phosphorus contents in the rhizosphere and bulk soil under Amorpha fruticosa established in different years[J]. Acta Prataculturae Sinica, 2014, 23(6): 61-68.

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