| Project/Area Number |
59860024
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
農業土木
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| Research Institution | EHIME UNIVERSITY |
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Principal Investigator |
SATO KOICHI EHIME UNIVERSITY,PROFESSOR, 農学部, 教授 (70033149)
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| Co-Investigator(Kenkyū-buntansha) |
YANO TOMOHISA TOTTORI UNIV.,ASSOC. PROFESSOR, 農学部, 助教授 (80032085)
KODANI YOSHIHITO TOTTORI UNIV.,PROFESSOR, 農学部, 教授 (90032078)
MITSUNO TORU OKAYAMA UNIV.,PROFESSOR, 農学部, 教授 (10026453)
YOMOTA ATSUSHI OKAYAMA UNIV.,PROFESSOR, 農学部, 教授 (60081527)
CHO TOSIO KYUSYU UNIV.,PROFESSOR, 農学部, 教授 (30032048)
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| Project Period (FY) |
1984 – 1986
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| Project Status |
Completed (Fiscal Year 1986)
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| Budget Amount *help |
¥12,300,000 (Direct Cost: ¥12,300,000)
Fiscal Year 1986: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1985: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1984: ¥7,300,000 (Direct Cost: ¥7,300,000)
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| Keywords | Upland Water Requirement / Evapotranspiration Method / Potential Evaporation / Evapotranspiration Ratio / 純放射量 / 蒸発散比 / 地域蒸発能 / 消費水量 / 熱収支 / ライシメータ |
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| Research Abstract |
The joint research by five universities are carried out from 1984 to 1986. Each researcher worked for his own purpose under taking the same aim at the design of upland water requirement and made investigation using the same prosedure.The results were reported or are going to be composed in 16 theses by each researcher, and the common part of these investigations about evapotranspiration, the fundamentals of upland irrigation project, are pickked out and discused in final report as follows.
(1) From the point of view of the potential evaporation (Eo), Chugoku-Shikoku area and Kyushu area are divided into three specific sections in its meteorological characteristics respectively. And 5 investigation stations correspond with these divided sections of Nihon sea, Seto inland sea, North Kyusyu and South Kyushu each other, except South Shikoku and Central Kyushu.
(2) Evapotranspiration calculated by Penman's equation(ETpen) has a good correlation coefficient with the actual evapotranspiration(ETa) in each station. The Eo calculated by Penman's equation using the data of regional meteorological station also shows a good correlation with the ETpen of the investigation site each other.
(3) Evapotranspiration ratio of soy bean is arround 1.0-1.1 after growing to over about 2.0 of leaf area index (LAI). It is concluded that the evapotranspiration method by using Penman's equation is the most rational for the design of upland water requirement.
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