ハウスにおけるソルガムの塩水点滴灌漑計画

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  鳥取大学乾燥地研究センター

• 山本 太平

  鳥取大学乾燥地研究センター

• 井上 光弘

  鳥取大学乾燥地研究センター

• 安養寺 久男

  鳥取大学乾燥地研究センター

書誌事項

タイトル別名

• Drip Irrigation Schedules with Saline Water for Sorghum under Greenhouse Condition

抄録

Inadequate supplies of quality water in arid and semi-arid regions for irrigation lend saline water as valuable alternative resource. However, information on how saline water irrigation affects crop yield is scarce. A research was conducted to investigate the use of saline water for drip irrigation of sorghum (Sorghum bicolor (L)) on dune sand. A new drip irrigation scheduling model for saline water use was proposed. Irrigation intervals were daily and once in every two days. The amount of irrigation input was based on open-pan evaporation method. The electrical conductivity of the saline water used was 7.32dS/m. Crop evapotranspiration during the growing period was 580mm while the estimated actual amount of water inclusive of leaching was 734 and 794mm for threshold (ECe=8.4 and 6.8dS/m). Daily irrigation significantly increased grain yield by 25-32% compared with 2-day schedule. Water use efficiency (WUE) was higher in daily irrigation (0.30kg/m³) than 2-day schedule (0.22kg/m³). The study provides new and additional information on appropriate irrigation input regimes and intervals required when saline water is used for crop production.

収録刊行物

• 農業土木学会論文集

  農業土木学会論文集 2006 (244), 535-543, 2006

  社団法人 農業農村工学会

キーワード

• ソルガム
• 土壌塩分
• 点滴灌漑
• TDR
• 間隔日数

詳細情報

• CRID: 1390001204542408576
• NII論文ID: 130004348789
• DOI: 10.11408/jsidre1965.2006.535
• ISSN: 18847234
• ISSN: 03872335
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可