2014 Fiscal Year Final Research Report
Inverse estimation of irrigation and nitrogen input by using plant growth model considering soil water and nitrogen formation
| Project/Area Number |
24780228
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | Ibaraki University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 灌漑 / 作物生長 / 地下水 |
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| Outline of Final Research Achievements |
In this study, column experiment was conducted to evaluate nitrogen transformation in soil with different water treatment condition.
Then, water and nitrogen load estimation model was also developed. Developed model was applied to two different type basin. One is Citarum river basin in Indonesia which have high input agriculture and high irrigated paddy ratio. Another is Namgum river basin in Laos which have low input agriculture and low irrigated paddy ratio.
Accuracy of water balance and rice yield were both improved by combining ground water model to plant growth model. Because ground water level affect to soil moisture and nitrogen formation in root zone soil.
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| Free Research Field |
農業土木学
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