| Project/Area Number |
21580300
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SAKAI Kazuhito 琉球大学, 農学部, 教授 (10253949)
NAKANDAKARI Tamotsu 琉球大学, 農学部, 助教 (70537555)
AKAMINE Hikaru 琉球大学, 農学部, 准教授 (90244293)
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| Project Period (FY) |
2009 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | ウッドチップ / 浸透トレンチ / 赤土等流出防止対策効果 / 発生源対策 / 赤土等流出防止対策 / USLE保全係数 / 赤土流出防止対策 / 土中排水法 / 水分動態モデル |
|---|
| Research Abstract |
In this study, we developed an infiltration trench filled with woodchips. Sediment runoff reduction efficiency was more than 70% under natural rainfall conditions. It was found that the water in the trench did not affect the crop cultivation because of rapid decrease of the water level. From a consideration of the maintenance and/or the farm work, it was better to set the trench on the lower side of a slope.
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