| Project/Area Number |
08456011
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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 |
作物学
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| Research Institution | Arid Land Research Center, Tottori University |
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Principal Investigator |
INANAGA Shinobu Arid Land Research Center, Tottori University Professor, 乾燥地研究センター, 教授 (40124664)
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| Co-Investigator(Kenkyū-buntansha) |
MUROTA Kenichi Arid Land Research Center, Tottori University Part-time Lecturer, 乾燥地研究センター, 講師(COE研究員)
SUGIMOTO Yukihiro Arid Land Research Center, Tottori University Associate Professor, 乾燥地研究センター, 助教授 (10243411)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 1997: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1996: ¥4,300,000 (Direct Cost: ¥4,300,000)
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| Keywords | salt water / desalinization / solar energy / plant cultivation / water bath / culture pot / mulch / temperature difference / 塩類土壌 / 持続的作物栽培システム / 除塩膜 / カルシウム塩施用 |
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| Research Abstract |
We established a novel simple system for plant cultivation using salt water. The system comprised of a flat plastic container, filled with salt water, and a plastic pot with a hole in the bottom. The bottom hole in the plastic pot was covered with a nylon net. Stones and glasswool were placed as a bottom layr and the rest of the pot was filled with vermiculite. The pot was placed on top of the plastic container.
During the daytime, water absorbs solar energy and evaporates. However, because of high pot temperature, no water is retained by vermiculite. During the night, temperature of the pot drops below that of the bath and accordingly evaporating water is trapped as pure water by vermiculite in the culture pot. This system depends completely on solar energy. The latter is free, limitless and dose not require sophisticated or costly equipment or facilities.
We investigated several cultural conditions with the prime objective of increasing water supply and retention by the vermiculite. Mulching with vinyl sheets on both the bath and the pot increased water evaporation from the bath and water retention by vermiculite. Increasing the bottom area of the pot as well as amount of vermiculite promotes capturing of water vapor and water supply and net retention by vermiculite.
Rapessed and Chingensai plants were grown in this system using salt water as only water source.
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