Effects of different regimes of fertilization on soil organic matter under conventional tillage
<p<To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from 1982 to 2011. There were six treatments, as follows: (1) no fertilizer input (CK); (2) min...
Ausführliche Beschreibung
Autor*in: |
Zhibin Guo [verfasserIn] Keke Hua [verfasserIn] Jing Wang [verfasserIn] Xisheng Guo [verfasserIn] Chuanlong He [verfasserIn] Daozhong Wang [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2014 |
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Schlagwörter: |
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Übergeordnetes Werk: |
In: Spanish Journal of Agricultural Research - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 2006, 12(2014), 3, Seite 801-808 |
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Übergeordnetes Werk: |
volume:12 ; year:2014 ; number:3 ; pages:801-808 |
Links: |
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DOI / URN: |
10.5424/sjar/2014123-4859 |
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Katalog-ID: |
DOAJ008490724 |
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10.5424/sjar/2014123-4859 doi (DE-627)DOAJ008490724 (DE-599)DOAJa0d3090b5e2e4e5ca3484ab46e2e9639 DE-627 ger DE-627 rakwb eng Zhibin Guo verfasserin aut Effects of different regimes of fertilization on soil organic matter under conventional tillage 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from 1982 to 2011. There were six treatments, as follows: (1) no fertilizer input (CK); (2) mineral fertilizers input (NPK); (3) mineral fertilizers + 3,750 kg ha<sup<-1</sup< wheat straw (WS/2-NPK); (4) mineral fertilizers + 7,500 kg ha<sup<-1</sup< wheat straw (WS-NPK); (5) mineral fertilizers + 15,000 kg ha<sup<-1 </sup<composted farmyard manure (CNPK); and (6) mineral fertilizers + 30,000 kg ha<sup<-1</sup< composted farmyard manure (DNPK). Mineral fertilizer applications combined with organic amendments improved soil physical properties. For the WS/2-NPK, WS-NPK, CNPK and DNPK treatments, the soil bulk density decreased more than 10%, while the air porosity and field water content increased more than 90% and 15%, compared with the values at the start of the experiment in 1982. Our results indicate that about two decades are needed for SOM to reach its saturation point in all treatments. The SOM sequestration rate was related to the fertilization regime. The average SOM sequestration rate in 1982-2005 was 0.27 g kg<sup<-1</sup< yr<sup<-1</sup< with NPK, 0.45 g kg<sup<-1</sup< yr<sup<-1</sup< with WS/2-NPK, 0.56 g kg<sup<-1</sup< yr<sup<-1 </sup<with WS-NPK, 0.60 g kg<sup<-1</sup< yr<sup<-1</sup< with CNPK and 1.02 g kg<sup<-1</sup< yr<sup<-1</sup< with DNPK. Therefore, both the quantity and the quality of the organic amendment determine the SOM sequestration rate and SOM saturation level.</p< soil organo-mineral complex soil humic acid soil fulvic acid Agriculture S Keke Hua verfasserin aut Jing Wang verfasserin aut Xisheng Guo verfasserin aut Chuanlong He verfasserin aut Daozhong Wang verfasserin aut In Spanish Journal of Agricultural Research Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 2006 12(2014), 3, Seite 801-808 (DE-627)477039782 (DE-600)2172833-1 21719292 nnns volume:12 year:2014 number:3 pages:801-808 https://doi.org/10.5424/sjar/2014123-4859 kostenfrei https://doaj.org/article/a0d3090b5e2e4e5ca3484ab46e2e9639 kostenfrei http://revistas.inia.es/index.php/sjar/article/view/4859 kostenfrei https://doaj.org/toc/2171-9292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2014 3 801-808 |
spelling |
10.5424/sjar/2014123-4859 doi (DE-627)DOAJ008490724 (DE-599)DOAJa0d3090b5e2e4e5ca3484ab46e2e9639 DE-627 ger DE-627 rakwb eng Zhibin Guo verfasserin aut Effects of different regimes of fertilization on soil organic matter under conventional tillage 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from 1982 to 2011. There were six treatments, as follows: (1) no fertilizer input (CK); (2) mineral fertilizers input (NPK); (3) mineral fertilizers + 3,750 kg ha<sup<-1</sup< wheat straw (WS/2-NPK); (4) mineral fertilizers + 7,500 kg ha<sup<-1</sup< wheat straw (WS-NPK); (5) mineral fertilizers + 15,000 kg ha<sup<-1 </sup<composted farmyard manure (CNPK); and (6) mineral fertilizers + 30,000 kg ha<sup<-1</sup< composted farmyard manure (DNPK). Mineral fertilizer applications combined with organic amendments improved soil physical properties. For the WS/2-NPK, WS-NPK, CNPK and DNPK treatments, the soil bulk density decreased more than 10%, while the air porosity and field water content increased more than 90% and 15%, compared with the values at the start of the experiment in 1982. Our results indicate that about two decades are needed for SOM to reach its saturation point in all treatments. The SOM sequestration rate was related to the fertilization regime. The average SOM sequestration rate in 1982-2005 was 0.27 g kg<sup<-1</sup< yr<sup<-1</sup< with NPK, 0.45 g kg<sup<-1</sup< yr<sup<-1</sup< with WS/2-NPK, 0.56 g kg<sup<-1</sup< yr<sup<-1 </sup<with WS-NPK, 0.60 g kg<sup<-1</sup< yr<sup<-1</sup< with CNPK and 1.02 g kg<sup<-1</sup< yr<sup<-1</sup< with DNPK. Therefore, both the quantity and the quality of the organic amendment determine the SOM sequestration rate and SOM saturation level.</p< soil organo-mineral complex soil humic acid soil fulvic acid Agriculture S Keke Hua verfasserin aut Jing Wang verfasserin aut Xisheng Guo verfasserin aut Chuanlong He verfasserin aut Daozhong Wang verfasserin aut In Spanish Journal of Agricultural Research Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 2006 12(2014), 3, Seite 801-808 (DE-627)477039782 (DE-600)2172833-1 21719292 nnns volume:12 year:2014 number:3 pages:801-808 https://doi.org/10.5424/sjar/2014123-4859 kostenfrei https://doaj.org/article/a0d3090b5e2e4e5ca3484ab46e2e9639 kostenfrei http://revistas.inia.es/index.php/sjar/article/view/4859 kostenfrei https://doaj.org/toc/2171-9292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2014 3 801-808 |
allfields_unstemmed |
10.5424/sjar/2014123-4859 doi (DE-627)DOAJ008490724 (DE-599)DOAJa0d3090b5e2e4e5ca3484ab46e2e9639 DE-627 ger DE-627 rakwb eng Zhibin Guo verfasserin aut Effects of different regimes of fertilization on soil organic matter under conventional tillage 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from 1982 to 2011. There were six treatments, as follows: (1) no fertilizer input (CK); (2) mineral fertilizers input (NPK); (3) mineral fertilizers + 3,750 kg ha<sup<-1</sup< wheat straw (WS/2-NPK); (4) mineral fertilizers + 7,500 kg ha<sup<-1</sup< wheat straw (WS-NPK); (5) mineral fertilizers + 15,000 kg ha<sup<-1 </sup<composted farmyard manure (CNPK); and (6) mineral fertilizers + 30,000 kg ha<sup<-1</sup< composted farmyard manure (DNPK). Mineral fertilizer applications combined with organic amendments improved soil physical properties. For the WS/2-NPK, WS-NPK, CNPK and DNPK treatments, the soil bulk density decreased more than 10%, while the air porosity and field water content increased more than 90% and 15%, compared with the values at the start of the experiment in 1982. Our results indicate that about two decades are needed for SOM to reach its saturation point in all treatments. The SOM sequestration rate was related to the fertilization regime. The average SOM sequestration rate in 1982-2005 was 0.27 g kg<sup<-1</sup< yr<sup<-1</sup< with NPK, 0.45 g kg<sup<-1</sup< yr<sup<-1</sup< with WS/2-NPK, 0.56 g kg<sup<-1</sup< yr<sup<-1 </sup<with WS-NPK, 0.60 g kg<sup<-1</sup< yr<sup<-1</sup< with CNPK and 1.02 g kg<sup<-1</sup< yr<sup<-1</sup< with DNPK. Therefore, both the quantity and the quality of the organic amendment determine the SOM sequestration rate and SOM saturation level.</p< soil organo-mineral complex soil humic acid soil fulvic acid Agriculture S Keke Hua verfasserin aut Jing Wang verfasserin aut Xisheng Guo verfasserin aut Chuanlong He verfasserin aut Daozhong Wang verfasserin aut In Spanish Journal of Agricultural Research Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 2006 12(2014), 3, Seite 801-808 (DE-627)477039782 (DE-600)2172833-1 21719292 nnns volume:12 year:2014 number:3 pages:801-808 https://doi.org/10.5424/sjar/2014123-4859 kostenfrei https://doaj.org/article/a0d3090b5e2e4e5ca3484ab46e2e9639 kostenfrei http://revistas.inia.es/index.php/sjar/article/view/4859 kostenfrei https://doaj.org/toc/2171-9292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2014 3 801-808 |
allfieldsGer |
10.5424/sjar/2014123-4859 doi (DE-627)DOAJ008490724 (DE-599)DOAJa0d3090b5e2e4e5ca3484ab46e2e9639 DE-627 ger DE-627 rakwb eng Zhibin Guo verfasserin aut Effects of different regimes of fertilization on soil organic matter under conventional tillage 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from 1982 to 2011. There were six treatments, as follows: (1) no fertilizer input (CK); (2) mineral fertilizers input (NPK); (3) mineral fertilizers + 3,750 kg ha<sup<-1</sup< wheat straw (WS/2-NPK); (4) mineral fertilizers + 7,500 kg ha<sup<-1</sup< wheat straw (WS-NPK); (5) mineral fertilizers + 15,000 kg ha<sup<-1 </sup<composted farmyard manure (CNPK); and (6) mineral fertilizers + 30,000 kg ha<sup<-1</sup< composted farmyard manure (DNPK). Mineral fertilizer applications combined with organic amendments improved soil physical properties. For the WS/2-NPK, WS-NPK, CNPK and DNPK treatments, the soil bulk density decreased more than 10%, while the air porosity and field water content increased more than 90% and 15%, compared with the values at the start of the experiment in 1982. Our results indicate that about two decades are needed for SOM to reach its saturation point in all treatments. The SOM sequestration rate was related to the fertilization regime. The average SOM sequestration rate in 1982-2005 was 0.27 g kg<sup<-1</sup< yr<sup<-1</sup< with NPK, 0.45 g kg<sup<-1</sup< yr<sup<-1</sup< with WS/2-NPK, 0.56 g kg<sup<-1</sup< yr<sup<-1 </sup<with WS-NPK, 0.60 g kg<sup<-1</sup< yr<sup<-1</sup< with CNPK and 1.02 g kg<sup<-1</sup< yr<sup<-1</sup< with DNPK. Therefore, both the quantity and the quality of the organic amendment determine the SOM sequestration rate and SOM saturation level.</p< soil organo-mineral complex soil humic acid soil fulvic acid Agriculture S Keke Hua verfasserin aut Jing Wang verfasserin aut Xisheng Guo verfasserin aut Chuanlong He verfasserin aut Daozhong Wang verfasserin aut In Spanish Journal of Agricultural Research Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 2006 12(2014), 3, Seite 801-808 (DE-627)477039782 (DE-600)2172833-1 21719292 nnns volume:12 year:2014 number:3 pages:801-808 https://doi.org/10.5424/sjar/2014123-4859 kostenfrei https://doaj.org/article/a0d3090b5e2e4e5ca3484ab46e2e9639 kostenfrei http://revistas.inia.es/index.php/sjar/article/view/4859 kostenfrei https://doaj.org/toc/2171-9292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2014 3 801-808 |
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10.5424/sjar/2014123-4859 doi (DE-627)DOAJ008490724 (DE-599)DOAJa0d3090b5e2e4e5ca3484ab46e2e9639 DE-627 ger DE-627 rakwb eng Zhibin Guo verfasserin aut Effects of different regimes of fertilization on soil organic matter under conventional tillage 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from 1982 to 2011. There were six treatments, as follows: (1) no fertilizer input (CK); (2) mineral fertilizers input (NPK); (3) mineral fertilizers + 3,750 kg ha<sup<-1</sup< wheat straw (WS/2-NPK); (4) mineral fertilizers + 7,500 kg ha<sup<-1</sup< wheat straw (WS-NPK); (5) mineral fertilizers + 15,000 kg ha<sup<-1 </sup<composted farmyard manure (CNPK); and (6) mineral fertilizers + 30,000 kg ha<sup<-1</sup< composted farmyard manure (DNPK). Mineral fertilizer applications combined with organic amendments improved soil physical properties. For the WS/2-NPK, WS-NPK, CNPK and DNPK treatments, the soil bulk density decreased more than 10%, while the air porosity and field water content increased more than 90% and 15%, compared with the values at the start of the experiment in 1982. Our results indicate that about two decades are needed for SOM to reach its saturation point in all treatments. The SOM sequestration rate was related to the fertilization regime. The average SOM sequestration rate in 1982-2005 was 0.27 g kg<sup<-1</sup< yr<sup<-1</sup< with NPK, 0.45 g kg<sup<-1</sup< yr<sup<-1</sup< with WS/2-NPK, 0.56 g kg<sup<-1</sup< yr<sup<-1 </sup<with WS-NPK, 0.60 g kg<sup<-1</sup< yr<sup<-1</sup< with CNPK and 1.02 g kg<sup<-1</sup< yr<sup<-1</sup< with DNPK. Therefore, both the quantity and the quality of the organic amendment determine the SOM sequestration rate and SOM saturation level.</p< soil organo-mineral complex soil humic acid soil fulvic acid Agriculture S Keke Hua verfasserin aut Jing Wang verfasserin aut Xisheng Guo verfasserin aut Chuanlong He verfasserin aut Daozhong Wang verfasserin aut In Spanish Journal of Agricultural Research Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 2006 12(2014), 3, Seite 801-808 (DE-627)477039782 (DE-600)2172833-1 21719292 nnns volume:12 year:2014 number:3 pages:801-808 https://doi.org/10.5424/sjar/2014123-4859 kostenfrei https://doaj.org/article/a0d3090b5e2e4e5ca3484ab46e2e9639 kostenfrei http://revistas.inia.es/index.php/sjar/article/view/4859 kostenfrei https://doaj.org/toc/2171-9292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2014 3 801-808 |
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<p<To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from 1982 to 2011. There were six treatments, as follows: (1) no fertilizer input (CK); (2) mineral fertilizers input (NPK); (3) mineral fertilizers + 3,750 kg ha<sup<-1</sup< wheat straw (WS/2-NPK); (4) mineral fertilizers + 7,500 kg ha<sup<-1</sup< wheat straw (WS-NPK); (5) mineral fertilizers + 15,000 kg ha<sup<-1 </sup<composted farmyard manure (CNPK); and (6) mineral fertilizers + 30,000 kg ha<sup<-1</sup< composted farmyard manure (DNPK). Mineral fertilizer applications combined with organic amendments improved soil physical properties. For the WS/2-NPK, WS-NPK, CNPK and DNPK treatments, the soil bulk density decreased more than 10%, while the air porosity and field water content increased more than 90% and 15%, compared with the values at the start of the experiment in 1982. Our results indicate that about two decades are needed for SOM to reach its saturation point in all treatments. The SOM sequestration rate was related to the fertilization regime. The average SOM sequestration rate in 1982-2005 was 0.27 g kg<sup<-1</sup< yr<sup<-1</sup< with NPK, 0.45 g kg<sup<-1</sup< yr<sup<-1</sup< with WS/2-NPK, 0.56 g kg<sup<-1</sup< yr<sup<-1 </sup<with WS-NPK, 0.60 g kg<sup<-1</sup< yr<sup<-1</sup< with CNPK and 1.02 g kg<sup<-1</sup< yr<sup<-1</sup< with DNPK. Therefore, both the quantity and the quality of the organic amendment determine the SOM sequestration rate and SOM saturation level.</p< |
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<p<To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from 1982 to 2011. There were six treatments, as follows: (1) no fertilizer input (CK); (2) mineral fertilizers input (NPK); (3) mineral fertilizers + 3,750 kg ha<sup<-1</sup< wheat straw (WS/2-NPK); (4) mineral fertilizers + 7,500 kg ha<sup<-1</sup< wheat straw (WS-NPK); (5) mineral fertilizers + 15,000 kg ha<sup<-1 </sup<composted farmyard manure (CNPK); and (6) mineral fertilizers + 30,000 kg ha<sup<-1</sup< composted farmyard manure (DNPK). Mineral fertilizer applications combined with organic amendments improved soil physical properties. For the WS/2-NPK, WS-NPK, CNPK and DNPK treatments, the soil bulk density decreased more than 10%, while the air porosity and field water content increased more than 90% and 15%, compared with the values at the start of the experiment in 1982. Our results indicate that about two decades are needed for SOM to reach its saturation point in all treatments. The SOM sequestration rate was related to the fertilization regime. The average SOM sequestration rate in 1982-2005 was 0.27 g kg<sup<-1</sup< yr<sup<-1</sup< with NPK, 0.45 g kg<sup<-1</sup< yr<sup<-1</sup< with WS/2-NPK, 0.56 g kg<sup<-1</sup< yr<sup<-1 </sup<with WS-NPK, 0.60 g kg<sup<-1</sup< yr<sup<-1</sup< with CNPK and 1.02 g kg<sup<-1</sup< yr<sup<-1</sup< with DNPK. Therefore, both the quantity and the quality of the organic amendment determine the SOM sequestration rate and SOM saturation level.</p< |
abstract_unstemmed |
<p<To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from 1982 to 2011. There were six treatments, as follows: (1) no fertilizer input (CK); (2) mineral fertilizers input (NPK); (3) mineral fertilizers + 3,750 kg ha<sup<-1</sup< wheat straw (WS/2-NPK); (4) mineral fertilizers + 7,500 kg ha<sup<-1</sup< wheat straw (WS-NPK); (5) mineral fertilizers + 15,000 kg ha<sup<-1 </sup<composted farmyard manure (CNPK); and (6) mineral fertilizers + 30,000 kg ha<sup<-1</sup< composted farmyard manure (DNPK). Mineral fertilizer applications combined with organic amendments improved soil physical properties. For the WS/2-NPK, WS-NPK, CNPK and DNPK treatments, the soil bulk density decreased more than 10%, while the air porosity and field water content increased more than 90% and 15%, compared with the values at the start of the experiment in 1982. Our results indicate that about two decades are needed for SOM to reach its saturation point in all treatments. The SOM sequestration rate was related to the fertilization regime. The average SOM sequestration rate in 1982-2005 was 0.27 g kg<sup<-1</sup< yr<sup<-1</sup< with NPK, 0.45 g kg<sup<-1</sup< yr<sup<-1</sup< with WS/2-NPK, 0.56 g kg<sup<-1</sup< yr<sup<-1 </sup<with WS-NPK, 0.60 g kg<sup<-1</sup< yr<sup<-1</sup< with CNPK and 1.02 g kg<sup<-1</sup< yr<sup<-1</sup< with DNPK. Therefore, both the quantity and the quality of the organic amendment determine the SOM sequestration rate and SOM saturation level.</p< |
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Effects of different regimes of fertilization on soil organic matter under conventional tillage |
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https://doi.org/10.5424/sjar/2014123-4859 https://doaj.org/article/a0d3090b5e2e4e5ca3484ab46e2e9639 http://revistas.inia.es/index.php/sjar/article/view/4859 https://doaj.org/toc/2171-9292 |
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