Saline Water Seepage from Drainage Canals Induces Soil Salinization and Growth Depression in the Adjacent Cornfields in the Upper Yellow River Basin
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- ARAKI Takuya
- Faculty of Agriculture, Ehime University
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- YASUTAKE Daisuke
- Faculty of Agriculture, Kochi University
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- WANG Weizhen
- Cold and Arid Regions Environmental and Engineering Research Institute, China Academy of Science
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- WU Yueru
- Cold and Arid Regions Environmental and Engineering Research Institute, China Academy of Science
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- MORI Makito
- Faculty of Agriculture, Kochi University
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- KITANO Masaharu
- Faculty of Agriculture, Kyushu University
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- CHO Hiroyuki
- Faculty of Agriculture, Saga University
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- KOBAYASHI Tetsuo
- Faculty of Agriculture, Kyushu University
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In order to analyze the growth of corn plants and the level of salinization in and around an irrigated field in the Yellow River basin, surveys of plant growth, soil and water quality were conducted in August and September 2007. Plant growth parameters such as height, leaf nitrogen content and maximum quantum yield of photosystem II (Fv/Fm), and chemical characteristics of the Yellow River water, irrigation canal water, ground water, drainage canal water, saline seep water and field soils were measured. There was a significant difference in corn growth in the irrigated field, that is, plant height, leaf nitrogen content and Fv/Fm decreased as the drainage canal for removing the saline seep water was approached. The electrical conductivity (EC) and various dissolved ion concentrations of the ground water in the field exhibited remarkable high values compared to those of the Yellow River water and the irrigation canal water. When a comparison between three survey points in the field (the nearest, middle and the farthest to the drainage canal) was made, it became clear that there existed clear gradients of those concentrations, that is, they showed the highest values at the nearest point and caused the poorest growth of corn plant at the point. The EC and ion concentrations of the saline seep at the foot of the river terrace made of loess showed extremely high values. The drainage canal for removing the seep water, which separated the survey field and the terrace, was not lined and hence the salty water in this canal seemed to seep into the surrounding fields. These results obtained from this study suggest that the cultivation system such as irrigation techniques and drainage facilities should be improved for sustaining productive irrigated agriculture in this area.
収録刊行物
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- Environment Control in Biology
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Environment Control in Biology 49 (3), 127-132, 2011
日本生物環境工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680237242112
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- NII論文ID
- 10030349423
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- NII書誌ID
- AA12029220
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- ISSN
- 18830986
- 1880554X
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- NDL書誌ID
- 023370014
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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