Phosphorus distribution and availability within soil water-stable aggregates as affected by long-term fertilisation

Xiuzhi Zhang, Ping Zhu, Chang Peng, Hongjun Gao, Qiang Li, Jinjing Zhang and Qiang Gao
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Xiuzhi Zhang: Key Laboratory of Soil Resource Sustainable Utilisation for Commodity Grain Bases of Jilin Province, College of Resource and Environmental Science, Jilin Agricultural University, Changchun, P.R. China
Ping Zhu: Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture, Institute of Agricultural Resources and Environments, Jilin Academy of Agricultural Sciences, Changchun, P.R. China
Chang Peng: Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture, Institute of Agricultural Resources and Environments, Jilin Academy of Agricultural Sciences, Changchun, P.R. China
Hongjun Gao: Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture, Institute of Agricultural Resources and Environments, Jilin Academy of Agricultural Sciences, Changchun, P.R. China
Qiang Li: Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture, Institute of Agricultural Resources and Environments, Jilin Academy of Agricultural Sciences, Changchun, P.R. China
Jinjing Zhang: Key Laboratory of Soil Resource Sustainable Utilisation for Commodity Grain Bases of Jilin Province, College of Resource and Environmental Science, Jilin Agricultural University, Changchun, P.R. China
Qiang Gao: Key Laboratory of Soil Resource Sustainable Utilisation for Commodity Grain Bases of Jilin Province, College of Resource and Environmental Science, Jilin Agricultural University, Changchun, P.R. China

Plant, Soil and Environment, 2020, vol. 66, issue 11, 552-558

Abstract: A field experiment lasting 37 years was conducted to evaluate the applications of different rates of pig manure and mineral fertilisers alone or in combination impacts on total phosphorus (Ptotal) and Olsen phosphorus (POlsen) contents and phosphorus activity coefficient (PAC, percentage of POlsen to Ptotal) within soil water-stable aggregates (WSA) in a Mollisol of Northeast China. The contents of Ptotal and POlsen associated with different size classes of WSA significantly (P < 0.05) increased with an increasing rate of applied P. The application of manure alone or combined with mineral fertilisers significantly increased PAC value associated with different size classes of WSA. There were positive correlations between Ptotal and POlsen contents with soil organic carbon (SOC) content within soil WSA. As SOC content increased 1 g/kg, Ptotal and POlsen contents increased 0.06-0.10 g/kg and 7.69-22.2 mg/kg, respectively, and the increase was larger in smaller size classes of WSA. The results suggested that a high manure rate combined with mineral fertilisers is more beneficial for increasing soil phosphorus content and availability. SOC is a vital factor controlling phosphorus content and availability within soil WSA.

Keywords: maize monoculture; superphosphate; organic amendment; soil aggregate fractionation; soil organic matter (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:66:y:2020:i:11:id:394-2020-pse

DOI: 10.17221/394/2020-PSE

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