イチジクの熟成と日射量の関係に関する統計的考察 Statistical Consideration of Relationship between Solar Radiant Quantity and Fig Maturation

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Japan does not receive enough solar energy to grow figs. By comparing the received solar energy major fig producing areas of the world and Japan, we have derived the supplemental light energy value, which is the minimum additional light energy necessary for optimal fig maturation. By supplementing natural sunlight with this optimum value by electrical lighting, the fig season in Japan can be lengthened, crop volume increased, and fruit quality improved. The optimum period for fig maturation in Nagoya is from June to September, when the minimum temperature remains above 20℃ in Nagoya, Athens, Izmir, and San Diego. During this same period, however, Athens receives direct sunlight for approximately 1,308hours, while Nagoya gets approximately 638 hours, i.e.about 49% of Athens.These four months also provide average estimated solar energy levels of 17.5 MJ・m^<-2>・day^<-1> for Athens, 15.3MJ・m^<-2>・day^<-1> for San Diego, and 8.8MJ・m^<-2>・day^<-1> for Nagoya. A normal cultivation environment from January to March in winter will require additional supplemental light energy 5.1MJ・m^<-2>・day^<-1> which is derived from the difference in the solar energy between 8.8MJ・m^<-2>・day^<-1> for outdoor maturation in Nagoya and 3.7MJ・m^<-2>・day^<-1> for a green house in winter.

収録刊行物

  • 照明学会誌

    照明学会誌 00082(00008), 544-550, 1998-08-01

    一般社団法人照明学会

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各種コード

  • NII論文ID(NAID)
    110001144488
  • NII書誌ID(NCID)
    AN00268860
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00192341
  • NDL 記事登録ID
    4527411
  • NDL 雑誌分類
    ZN32(科学技術--電気工学・電気機械工業--電力)
  • NDL 請求記号
    Z16-302
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS 
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