1991 Fiscal Year Final Research Report Summary
Irrigation and drainage development of deserts in China
| Project/Area Number |
01041062
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Field Research |
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| Research Institution | Tottori University |
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Principal Investigator |
YANO Tomohisa Professor, Arid Land Research Center, Tottori University, 乾燥地研究センター, 教授 (80032085)
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| Co-Investigator(Kenkyū-buntansha) |
王 暁平 蘭州沙漠研究所, 工程師
陳 荷生 蘭州沙漠研究所, 副教授
邸 醒民 蘭州沙漠研究所, 教授
YAMAMOTO Fukuju Associate Professor, Faculty of Agriculture, Tottori University, 農学部, 助教授 (60112322)
INOUE Mitsuhiro Associate Professor, Arid Land Research Center, Tottori University, 乾燥地研究センター, 助教授 (90032309)
HONNA Toshimasa Associate Professor, Faculty Agricultural Tottori University, 農学部, 助教授 (90093624)
HAYASHI Shizuo Associate Professor, Tropical Agricultural Research Center, Kyushu University, 熱帯農学研究センター, 助教授 (00038316)
AMAYA Takao Professor, Faculty of Agriculture, Gifu University, 農学部, 教授 (80033265)
YOSHIDA Isao Professor, Faculty of Agriculture, Tottori University, 農学部, 教授 (40038237)
WASANO Kikuo Professor, Faculty of Agriculture, Saga University, 農学部, 教授 (40039342)
WANG Xiaping Engineer, Institute of Desert Research, Academia Sinica
CHEN Heshen Associate Professor, Institute of Desert Research, Academia Sinica
DI Xingmin Professor, Institute of Desert Research, Academia Sinica
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| Project Period (FY) |
1989 – 1991
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| Keywords | Arid land / Irrigation / Water Resource / Sewage water treatment / Salt accumulation / Leaching / Drought tolerance of trees |
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| Research Abstract |
This research is composed of the following three subjects of study.
1. Water resources utilization for development of sandy deserts :
In the experimental field at the Shapotou Desert Experiment and Research Station, evapotranspiration from soybeans was estimated by the water balance method using the drainage type lysimeters under the condition of drip irrigation system. The water holding in the soil, soybean yield and evapotranspiration in a sandy field increased by covering the soil surface with silt contained in the Yellow river. Application of the small amount of water at frequent intervals decreased the deep percolation losses in a sandy field. Feasibility of agricultural utilization of treated wastewater from a rural settlement was proved by the experiments of soybean and corn culture during four years.
2. Soil management for cultivation of sandy deserts :
The chemical properties of soil at Pingluo upland field were analyzed. In the case of high groundwater level, the salt accumulation of the field was recognized with lower harvesting of wheat. Application of the, large amount of surface irrigation water after the harvesting season decreased the value, of electric conductivity in the soil.
3. Drought tolerance and radial growth of woody species in Shapotou.
Differences of drought tolerance among nine woody plants were investigated using the p-v curve method. The drought tolerance of Ammopitanthus mongolicus, Caragana intermedia, and Salix gordejevii was remarkable in all of the species. Anatomical studies on radial growth of five woody species maintained by periodic irrigation were also investigated. The periodic cycle of radial growth was observed in Elaeagnus. angustifolia : and Thuja orientalis, whereas Populus alba showed constant growth. In Pinus sylvestris and Salix matsudana the stagnation of growth occurred once in growing season.
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