| Project/Area Number |
10460113
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
農業機械学
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| Research Institution | Nihon University |
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Principal Investigator |
KITANI Osamu Department of Bioenvironmental and Agricultural Science, College of Bioresource Sciences, Nihon University, Professor, 生物資源科学部, 教授 (00024539)
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| Co-Investigator(Kenkyū-buntansha) |
TORII Tooru Department of Precision Mechanics, Graduate School of Engineering University of Tokyo, Associate Professor, 大学院・工学系研究科, 助教授 (60172227)
KAWANISHI Hirofumi Department of Bioenvironmental and Agricultural Science, College of Bioresource Sciences, Nihon University, Professor, 生物資源科学部, 教授 (60139053)
丸山 利輔 日本大学, 生物資源科学部, 教授 (90026451)
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| Project Period (FY) |
1998 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥13,700,000 (Direct Cost: ¥13,700,000)
Fiscal Year 2001: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2000: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1999: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1998: ¥9,400,000 (Direct Cost: ¥9,400,000)
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| Keywords | Membrane coating / Plants / Transpiration / Water requirement / Fibrous membrane coating / Dry land farming |
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| Research Abstract |
Reduction of moisture requirement of plants is important to cultivate crops in arid lands and will be necessitated even in the usual lands where water will be used more for factories and daily life. Covering plants by porous membrane will reduce transpiration and therefore moisture requirement. Study was conducted to develop a technique to reduce water requirement of plants by covering it with membrane. Fibrous membrane using fibers from waste biomass was developed and applied to the plant leaves so that it reduces transpiration with minimum coverage of the stomata. Transpiration was measured by weight method. Photosynthetic rate was measured by a CO_2 meter with growth chambers. Plant weight in dry matter was measured at the end of the growth test. Rice, radish and Melicotu albus were tested as herbaceous plants. Rose was tested representing woody plant. The transpiration of radish decreased in average 11.2% with, little effect on photosynthesis, but in case of rice, its transpiration decreased with remarkable reduction of photosynthesis. An arid land plant, Melicotu albus showed little effect of coating in winter. Rose reduced its transpiration at first stage, but the effect of coating disappeared thereafter.
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