Evapotranspiration Integrated Model for Analysis of Soil Salinization Affected by Root Selective Absorption

• NOMIYAMA Ryosuke

  Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University

• YASUTAKE Daisuke

  Faculty of Agriculture, Kyushu University

• SAGO Yuki

  Faculty of Agriculture, Yamaguchi University

• MORI Makito

  Agriculture Unit, Natural Sciences Cluster, Research and Education Faculty, Kochi University

• TAGAWA Kenta

  Department of Agricultural Sciences, Saga University

• CHO Hiroyuki

  Department of Agricultural Sciences, Saga University

• WU Yueru

  Cold and Arid Regions Environmental and Engineering Research Institute

• WANG Weizhen

  Cold and Arid Regions Environmental and Engineering Research Institute

• KITANO Masaharu

  Faculty of Agriculture, Kyushu University

抄録

A kinetic model for root ion absorption named as the evapotranspiration-integrated model was newly proposed in order to analyze the characteristics of ion absorption by crop roots in soil-based culture. The validity of the evapotranspiration-integrated model for simulation of the day-to-day dynamics of soil salinization was examined based on experiments with a large-sized soil column system cropped with maize plants, where the salinized nutrient solution was supplied as found in crop fields under desertification. The simulated time courses of salt accumulations in plants and soil were expressed reliably based on the specificity of ion types in root absorption: Cl ⁻, Na ⁺, Mg ²⁺ and Ca ²⁺more highly accumulated in the root zone soil than in plants because of the root low absorption of these ions. Accumulation of the major essential ion of K ⁺ was extremely higher in plants than in the root zone soil because of the root high absorption of K ⁺. These results indicate that the evapotranspiration-integrated model is applicable for evaluating selective and active ion absorption by crop roots in the soil salinization process, which is considered to contribute to sustainable management of crop rotation systems.

収録刊行物

• Ｅｎｖｉｒｏｎｍｅｎｔ　Ｃｏｎｔｒｏｌ　ｉｎ　Ｂｉｏｌｏｇｙ

  Ｅｎｖｉｒｏｎｍｅｎｔ　Ｃｏｎｔｒｏｌ　ｉｎ　Ｂｉｏｌｏｇｙ 53 (4), 199-204, 2015

  日本生物環境工学会

キーワード

• column experiment
• evapotranspiration
• salt accumulation
• <I>Zea mays</I> L.

詳細情報

• CRID: 1390282680236947072
• NII論文ID: 130005114595
• NII書誌ID: AA12029220
• DOI: 10.2525/ecb.53.199
• ISSN: 18830986
• ISSN: 1880554X
• NDL書誌ID: 026983529
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026983529
• Web Site: https://www.jstage.jst.go.jp/article/ecb/53/4/53_199/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可