Relation between Fe-oxides transformation and phosphorus adsorption in the oxic and anoxic layers of two paddy soils as affected by flooding
The changes of total reducing substances (TRS), oxalate-extractable Fe (Fe<sub>o</sub>), dithionite-citrate-bicarbonate extractable Fe (Fe<sub>DCB</sub>) and phosphorus adsorption (P adsorption) in oxic and anoxic layers of two paddy soils during 6-week flooding were examined...
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| Format: | Article |
| Language: | English |
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Zhejiang University Press
2002-09-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
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| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2002.05.0485 |
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| author | ZHANG Yong-song LIN Xian-yong |
| author_facet | ZHANG Yong-song LIN Xian-yong |
| author_sort | ZHANG Yong-song |
| collection | DOAJ |
| description | The changes of total reducing substances (TRS), oxalate-extractable Fe (Fe<sub>o</sub>), dithionite-citrate-bicarbonate extractable Fe (Fe<sub>DCB</sub>) and phosphorus adsorption (P adsorption) in oxic and anoxic layers of two paddy soils during 6-week flooding were examined under laboratory conditions. It was found that TRS, Fe<sub>o</sub>, and P adsorption in fresh samples were sharply increased by flooding, and significantly higher in anoxic layers than in oxic layers of the submerged soils. The significant correlation (at 1% level) between TRS, Fe<sub>o</sub> and P adsorption suggested that the substantial increase of P adsorption caused by flooding was ascribed to the reducing process of soil Eh resulting from flooding, transformation of Fe<sub>DCB</sub> to Fe<sub>o</sub>, and poor crystallinity of soil iron oxide induced by low Eh. |
| format | Article |
| id | doaj-art-71d119a8ff8d4290b526ce104ff56ab8 |
| institution | DOAJ |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2002-09-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-71d119a8ff8d4290b526ce104ff56ab82025-08-20T02:47:42ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552002-09-012848549110.3785/1008-9209.2002.05.048510089209Relation between Fe-oxides transformation and phosphorus adsorption in the oxic and anoxic layers of two paddy soils as affected by floodingZHANG Yong-songLIN Xian-yongThe changes of total reducing substances (TRS), oxalate-extractable Fe (Fe<sub>o</sub>), dithionite-citrate-bicarbonate extractable Fe (Fe<sub>DCB</sub>) and phosphorus adsorption (P adsorption) in oxic and anoxic layers of two paddy soils during 6-week flooding were examined under laboratory conditions. It was found that TRS, Fe<sub>o</sub>, and P adsorption in fresh samples were sharply increased by flooding, and significantly higher in anoxic layers than in oxic layers of the submerged soils. The significant correlation (at 1% level) between TRS, Fe<sub>o</sub> and P adsorption suggested that the substantial increase of P adsorption caused by flooding was ascribed to the reducing process of soil Eh resulting from flooding, transformation of Fe<sub>DCB</sub> to Fe<sub>o</sub>, and poor crystallinity of soil iron oxide induced by low Eh.https://www.academax.com/doi/10.3785/1008-9209.2002.05.0485oxic layeranoxic layerfloodingP adsorptionFe-oxidespaddy soils |
| spellingShingle | ZHANG Yong-song LIN Xian-yong Relation between Fe-oxides transformation and phosphorus adsorption in the oxic and anoxic layers of two paddy soils as affected by flooding 浙江大学学报. 农业与生命科学版 oxic layer anoxic layer flooding P adsorption Fe-oxides paddy soils |
| title | Relation between Fe-oxides transformation and phosphorus adsorption in the oxic and anoxic layers of two paddy soils as affected by flooding |
| title_full | Relation between Fe-oxides transformation and phosphorus adsorption in the oxic and anoxic layers of two paddy soils as affected by flooding |
| title_fullStr | Relation between Fe-oxides transformation and phosphorus adsorption in the oxic and anoxic layers of two paddy soils as affected by flooding |
| title_full_unstemmed | Relation between Fe-oxides transformation and phosphorus adsorption in the oxic and anoxic layers of two paddy soils as affected by flooding |
| title_short | Relation between Fe-oxides transformation and phosphorus adsorption in the oxic and anoxic layers of two paddy soils as affected by flooding |
| title_sort | relation between fe oxides transformation and phosphorus adsorption in the oxic and anoxic layers of two paddy soils as affected by flooding |
| topic | oxic layer anoxic layer flooding P adsorption Fe-oxides paddy soils |
| url | https://www.academax.com/doi/10.3785/1008-9209.2002.05.0485 |
| work_keys_str_mv | AT zhangyongsong relationbetweenfeoxidestransformationandphosphorusadsorptionintheoxicandanoxiclayersoftwopaddysoilsasaffectedbyflooding AT linxianyong relationbetweenfeoxidestransformationandphosphorusadsorptionintheoxicandanoxiclayersoftwopaddysoilsasaffectedbyflooding |