The research on the accumulated nitrogen load from agricultural nitrogen fertilizer
| Project/Area Number |
24580347
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 | Ibaraki University |
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Principal Investigator |
KURODA Hisao 茨城大学, 農学部, 教授 (20205256)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 蓄積窒素 / 窒素汚染 / 面源 / 施肥 / 総投入窒素量 / 脱窒 / 希釈水 / 脱窒活性 / 湧水 / 井戸 / 畑地 / 農業系 / 窒素負荷 |
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| Outline of Final Research Achievements |
I found that the following by "The research on the accumulated nitrogen load from agricultural nitrogen fertilizer." ①: The amount of the accumulated nitrogen from agriculture and livestock is a significant impact on the nitrogen concentration in the rivers. ②: From Kasumigaura basin water balance calculation results, the largest were factors in water quality of Lake Kasumigaura was an artificial water level control. ③: It was measured for the accumulated nitrogen of upland subsoil by agriculture and livestock origin. ④: In the upland subsoil, it was shown that nitrogen is not removed from the denitrification activity. ⑤ To purify the leaching nitrogen downstream on the wetlands from upland fields, it is becoming apparent that the surface soil condition is an important function. ⑥: For the accumulated nitrogen as mitigation measures of leaching, the management of dilapidated bamboo forests, was clarified that there is an effect to increase dilution water.
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Report
(4 results)
Research Products
(8 results)
