| Project/Area Number |
21310003
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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 |
Environmental dynamic analysis
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| Research Institution | Ibaraki University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
NARISAWA Kazuhiko 茨城大学, 農学部, 准教授 (90431650)
KOMATSUZAKI Masakazu 茨城大学, 農学部, 准教授 (10205510)
KATO Tasuku 東京農工大学, 農学研究院, 准教授 (10302332)
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| Co-Investigator(Renkei-kenkyūsha) |
HASHIMOTO Tomoyoshi 中央農業総合研究センター, 上席研究員 (90343946)
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| Research Collaborator |
LIYAN Tono 東京農工大学, 大学院・連合農学研究科, 博士課程
YASUDA Tomoaki 茨城大学, 大学院・農学研究科, 修士課程
AKAIKE Megumi 茨城大学, 大学院・農学研究科, 修士課程
KAWAMURA Akihiro 茨城大学, 大学院・農学研究科, 修士課程
NARAOKA Masahiro 茨城大学, 大学院・農学研究科, 修士課程
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2011: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2010: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2009: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
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| Keywords | 温室効果ガス / 亜酸化窒素 / 脱窒菌 / 不耕起栽培 / カバークロップ / 脱窒性糸状菌 / 糸状菌内生細菌 / 硝化アーキア / 地下水硝酸態窒素 |
|---|
| Research Abstract |
One of the major results of this study is to present the data on the seasonal variation of nitrous oxide (N_2O)-producing potential in no-tilled upland soils and the contribution of fungi to soil N_2O production. Our results showed that the soil N_2O-producing potential was the highest just before the harvest of summer crop (soy bean), winter-cover cropping enhanced the potential after the cut down of cover crop in spring, and the fungal N_2O-producing activity was comparable to the bacterial activity when the soils were kept at high water content.
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