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Changes in Olsen Phosphorus Concentration and Its Response to Phosphorus Balance in Black Soils under Different Long-Term Fertilization Patterns
The Olsen phosphorus (P) concentration of a soil is a key index that can be used to evaluate the P supply capacity of the soil and to estimate the optimal P fertilization rate. A study of the relationship between the soil Olsen P concentration and the P balance (P input minus P output) and their var...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4503644/ https://www.ncbi.nlm.nih.gov/pubmed/26177293 http://dx.doi.org/10.1371/journal.pone.0131713 |
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author | Zhan, Xiaoying Zhang, Li Zhou, Baoku Zhu, Ping Zhang, Shuxiang Xu, Minggang |
author_facet | Zhan, Xiaoying Zhang, Li Zhou, Baoku Zhu, Ping Zhang, Shuxiang Xu, Minggang |
author_sort | Zhan, Xiaoying |
collection | PubMed |
description | The Olsen phosphorus (P) concentration of a soil is a key index that can be used to evaluate the P supply capacity of the soil and to estimate the optimal P fertilization rate. A study of the relationship between the soil Olsen P concentration and the P balance (P input minus P output) and their variations among different fertilization patterns will help to provide useful information for proper management of P fertilization. In this paper, the two investigated long-term experiments were established on black soils in the northeast region of China. Six fertilization treatments were selected: (1) unfertilized (CK); (2) nitrogen only (N); (3) nitrogen and potassium (NK); (4) nitrogen and phosphorus (NP); (5) nitrogen, phosphorus, and potassium (NPK); and (6) nitrogen, phosphorus, potassium and manure (NPKM). The results showed that the average Olsen P concentrations in the black soils at Gongzhuling and Harbin (16- and 31-year study periods, respectively), decreased by 0.49 and 0.56 mg kg(-1) a(-1), respectively, without P addition and increased by 3.17 and 1.78 mg kg(-1) a(-1), respectively, with P fertilization. The changes in soil Olsen P concentrations were significantly (P<0.05) correlated with the P balances at both sites except for the NP and NPK treatments at Gongzhuling. Under an average deficit of 100 kg ha(-1) P, the soil Olsen P concentration at both sites decreased by 1.36~3.35 mg kg(-1) in the treatments without P addition and increased by 4.80~16.04 mg kg(-1 )in the treatments with 100 kg ha(-1) of P accumulation. In addition, the changes in Olsen P concentrations in the soil with 100 kg ha(-1)of P balance were significantly correlated with the P activation coefficient (PAC, percentage of Olsen P to total P, r=0.99, P<0.01) and soil organic matter content (r=0.91, P<0.01). A low pH was related to large changes of Olsen P by 1 kg ha(-1) of P balance. These results indicated that soil organic matter and pH have important effects on the change in soil Olsen P by 1 kg ha(-1 )of P balance. |
format | Online Article Text |
id | pubmed-4503644 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-45036442015-07-17 Changes in Olsen Phosphorus Concentration and Its Response to Phosphorus Balance in Black Soils under Different Long-Term Fertilization Patterns Zhan, Xiaoying Zhang, Li Zhou, Baoku Zhu, Ping Zhang, Shuxiang Xu, Minggang PLoS One Research Article The Olsen phosphorus (P) concentration of a soil is a key index that can be used to evaluate the P supply capacity of the soil and to estimate the optimal P fertilization rate. A study of the relationship between the soil Olsen P concentration and the P balance (P input minus P output) and their variations among different fertilization patterns will help to provide useful information for proper management of P fertilization. In this paper, the two investigated long-term experiments were established on black soils in the northeast region of China. Six fertilization treatments were selected: (1) unfertilized (CK); (2) nitrogen only (N); (3) nitrogen and potassium (NK); (4) nitrogen and phosphorus (NP); (5) nitrogen, phosphorus, and potassium (NPK); and (6) nitrogen, phosphorus, potassium and manure (NPKM). The results showed that the average Olsen P concentrations in the black soils at Gongzhuling and Harbin (16- and 31-year study periods, respectively), decreased by 0.49 and 0.56 mg kg(-1) a(-1), respectively, without P addition and increased by 3.17 and 1.78 mg kg(-1) a(-1), respectively, with P fertilization. The changes in soil Olsen P concentrations were significantly (P<0.05) correlated with the P balances at both sites except for the NP and NPK treatments at Gongzhuling. Under an average deficit of 100 kg ha(-1) P, the soil Olsen P concentration at both sites decreased by 1.36~3.35 mg kg(-1) in the treatments without P addition and increased by 4.80~16.04 mg kg(-1 )in the treatments with 100 kg ha(-1) of P accumulation. In addition, the changes in Olsen P concentrations in the soil with 100 kg ha(-1)of P balance were significantly correlated with the P activation coefficient (PAC, percentage of Olsen P to total P, r=0.99, P<0.01) and soil organic matter content (r=0.91, P<0.01). A low pH was related to large changes of Olsen P by 1 kg ha(-1) of P balance. These results indicated that soil organic matter and pH have important effects on the change in soil Olsen P by 1 kg ha(-1 )of P balance. Public Library of Science 2015-07-15 /pmc/articles/PMC4503644/ /pubmed/26177293 http://dx.doi.org/10.1371/journal.pone.0131713 Text en © 2015 Zhan et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Zhan, Xiaoying Zhang, Li Zhou, Baoku Zhu, Ping Zhang, Shuxiang Xu, Minggang Changes in Olsen Phosphorus Concentration and Its Response to Phosphorus Balance in Black Soils under Different Long-Term Fertilization Patterns |
title | Changes in Olsen Phosphorus Concentration and Its Response to Phosphorus Balance in Black Soils under Different Long-Term Fertilization Patterns |
title_full | Changes in Olsen Phosphorus Concentration and Its Response to Phosphorus Balance in Black Soils under Different Long-Term Fertilization Patterns |
title_fullStr | Changes in Olsen Phosphorus Concentration and Its Response to Phosphorus Balance in Black Soils under Different Long-Term Fertilization Patterns |
title_full_unstemmed | Changes in Olsen Phosphorus Concentration and Its Response to Phosphorus Balance in Black Soils under Different Long-Term Fertilization Patterns |
title_short | Changes in Olsen Phosphorus Concentration and Its Response to Phosphorus Balance in Black Soils under Different Long-Term Fertilization Patterns |
title_sort | changes in olsen phosphorus concentration and its response to phosphorus balance in black soils under different long-term fertilization patterns |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4503644/ https://www.ncbi.nlm.nih.gov/pubmed/26177293 http://dx.doi.org/10.1371/journal.pone.0131713 |
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