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Transformation of soil phosphorus fractions: the role of time and fertilisation

文献类型： 外文期刊

作者： Wang, Qiujun 1 ; Guo, Dejie 1 ; Xu, Yehong 1 ; Ma, Yan 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm, Nanjing 210014, Peoples R China

2.Natl Agr Expt Stn Agr Environm, Nanjing 211500, Peoples R China

关键词： correlation; field experiment; five growing seasons; organic fertiliser; P availability; P transformation; soil P fraction; soil pH and organic C

期刊名称：SOIL RESEARCH （ 影响因子：1.878； 五年影响因子：2.364 ）

ISSN： 1838-675X

年卷期：

页码：

收录情况： SCI

摘要： Context. Organic fertilisation may increase soil phosphorus (P) availability and increase risk of P loss to groundwater. Aims. To understand the effect of continuously applying organic fertilisers on formation of P fractions. Methods. A field experiment was conducted to investigate the effect of different fertilisation (CF, chemical fertiliser; COF, cow dung compost with chemical fertiliser; POF, pig manure compost with chemical fertiliser) on different soil P fractions for five growing seasons. Key results. Compared with CF, the COF and POF treatments had significantly higher total P and available P contents in each season. The COF treatment showed the highest concentration of NaOH-P-i ; however, POF showed the highest concentration of HCI-P-i in all seasons. There were significant positive correlations between concentrations of total P (r = 0.863, P = 0.001), available P (r = 0.590, P = 0.006), each P fraction (r = 0.447 to 0.862, P = 0.048 to 0.001) and organic carbon concentration. Concentrations of total P (r = -0.473, P = 0.035), available P (r = -0.589, P = 0.006) and each P fraction (except HCI-P-i) (r = -0.711 to -0.476, P = 0.001 to 0.034) showed significant negative correlations with soil pH. Available P concentration showed the highest correlation with concentrations of residual P (r = 0.665, P = 0.007), HCI-P-i (r = 0.413, P = 0.126) and NaOH-P ; (r = 0.282, P = 0.309) in CF, COF and POF treatments, respectively. Conclusions, Continuous application of organic fertiliser can significantly improve P availability through impacting distribution of P fractions.

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[1]Transformation of soil phosphorus fractions: the role of time and fertilisation. Wang, Qiujun,Guo, Dejie,Xu, Yehong,Ma, Yan,Wang, Qiujun,Guo, Dejie,Xu, Yehong,Ma, Yan. 2022

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