2014 Fiscal Year Final Research Report
Relationships between micro-scale redox variation and cadmium speciation in submerged paddy soil
| Project/Area Number |
22380046
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plant nutrition/Soil science
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| Research Institution | National Institute for Agro-Environmental Sciences |
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Principal Investigator |
YAMAGUCHI Noriko 独立行政法人農業環境技術研究所, 土壌環境研究領域, 主任研究員 (80345090)
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| Co-Investigator(Kenkyū-buntansha) |
HASHIMOTO Yohey 東京農工大学, 大学院生物システム応用化学研究科, 准教授 (80436899)
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| Co-Investigator(Renkei-kenkyūsha) |
OHKURA Toshiaki 独立行政法人農業環境技術研究所, 農業環境インベントリーセンター, 主任研究員 (60354023)
MAKINO Tomoyuki 独立行政法人農業環境技術研究所, 土壌環境研究領域, 上席研究員 (60354106)
AMACHI Seigo 千葉大学, 園芸学研究科, 准教授 (80323393)
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| Project Period (FY) |
2010-04-01 – 2015-03-31
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| Keywords | 酸化還元 / 水田土壌 / カドミウム / スペシエーション |
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| Outline of Final Research Achievements |
In order to reduce the amounts of Cd uptake by rice plants, insolubilization of Cd as cadmium sulfide is an effective measure. We found that average ratio of insoluble cadmium sulfide in flooded soil was not always predictable by the thermodynamic constant. This was because cadmium sulfide was unevenly distributed around rice roots and amendment materials depending on the variation of micro-scale redox environment of soil.
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| Free Research Field |
土壌化学
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