Grant-in-Aid for Overseas Scientific Survey.
|Research Institution||Tottori University|
YANO Tomohisa Professor, Arid Land Research Center, Tottori University, 乾燥地研究センター, 教授 (80032085)
張 継賢 蘭州沙漠研究所, 副教授
陳 荷生 蘭州沙漠研究所, 副教授
黄 子〓 蘭州沙漠研究所, 教授
邸 醒民 蘭州沙漠研究所, 教授
山本 福壽 鳥取大学, 農学部, 助教授 (60112322)
井上 光弘 鳥取大学, 乾燥地研究センター, 助教授 (90032309)
天谷 孝夫 岐阜大学, 農学部, 教授 (80033265)
本名 俊正 鳥取大学, 農学部, 助教授 (90093624)
林 静夫 九州大学, 熱帯農学研究センター, 助教授 (00038316)
吉田 勲 鳥取大学, 農学部, 教授 (40038237)
和佐野 喜久生 佐賀大学, 農学部, 教授 (40039342)
王 暁平 蘭州沙漠研究所, 工程師
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
YAMAMOTO Fukuju Associate Professor, Faculty of Agriculture, Tottori University
INOUE Mitsuhiro Associate Professor, Arid Land Research Center, Tottori University
HONNA Toshimasa Associate Professor, Faculty Agricultural Tottori University
AMAYA Takao Professor, Faculty of Agriculture, Gifu University
HAYASHI Shizuo Associate Professor, Tropical Agricultural Research Center, Kyushu University
WASANO Kikuo Professor, Faculty of Agriculture, Saga University
YOSHIDA Isao Professor, Faculty of Agriculture, Tottori University
|Project Fiscal Year
1989 – 1991
Completed(Fiscal Year 1991)
|Budget Amount *help
¥14,800,000 (Direct Cost : ¥14,800,000)
Fiscal Year 1991 : ¥2,000,000 (Direct Cost : ¥2,000,000)
Fiscal Year 1990 : ¥6,500,000 (Direct Cost : ¥6,500,000)
Fiscal Year 1989 : ¥6,300,000 (Direct Cost : ¥6,300,000)
|Keywords||Arid land / Irrigation / Water Resource / Sewage water treatment / Salt accumulation / Leaching / Drought tolerance of trees / 乾燥地 / 潅漑 / 水資源 / 汚水処理 / 塩類集積 / 洗脱 / 樹木の耐乾性 / 灌漑 / 水収支|
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.