| Project/Area Number |
63304012
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| Research Category |
Grant-in-Aid for Co-operative Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
作物
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
CHUJO Hiroyoshi University of Osaka Pref. College of Agriculture Professor, 農学部, 教授 (80081488)
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| Co-Investigator(Kenkyū-buntansha) |
HIRAI Gen-ichi Osaka Gakuin Junior College Department of International Studies Professor, 国際文化学科, 教授 (00030362)
HASHIKAWA Ushio Shiga Pref. Junor College Professor, 農業部, 教授 (50074042)
HORIE Takeshi Kyoto University Faculty of Agriculture Professor, 農学部, 教授 (90181528)
TAKEUCHI Shiro Kinki University Department of Agriculture Professor, 農学部, 教授 (00088155)
TANGE Masatoshi Kobe University Faculty of Agriculture Emeritus Professor, 農学部, 名誉教授 (40031158)
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| Project Period (FY) |
1988 – 1989
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥26,200,000 (Direct Cost: ¥26,200,000)
Fiscal Year 1989: ¥11,200,000 (Direct Cost: ¥11,200,000)
Fiscal Year 1988: ¥15,000,000 (Direct Cost: ¥15,000,000)
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| Keywords | Agro-ecosystem / Assessment of productivity / Carbon dynamics / Energy dynamics / Fertilizer application / Meteorological locational condition / Nitrogen dynamics / Production efficiency / 微気象 / エネルギー / 日射受光量 / ^<13>C / ^<15>N |
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| Research Abstract |
Analytical studies were conducted on nitrogen, carbon and energy dynamics and productivity potential in ecosystems of paddy field, field and grassland in 1988 and 1989. Special consideration was given on the relationship between nitrogen dynamics which affects light energy fixation by crop plants and nitrogen use efficiency and on that between carbon dynamics which was the product of light energy fixation and productivity efficiency of crop plants. Assessment systems of productivity of the ecosystem were also constructed in connection with meteorological locational conditions in radiation use. Nitrogen dynamics were made clear on several crop plants in the ecosystem and reasonable system of fertilizer application were constructed with regarding the efficiency of crop production. Models of productivity assessment were established and adaptability of these models were proved. The relationship between carbon fixation and tendency of carbon accumulation in sink and that between crop growth and microclimate or soil organic matter were also made clear.
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