伊豆赤沢海洋深層水の作物の発芽とカイワレの生育に及ぼす影響(Effects of Deep Seawater Pumped at Izu-Akazawa on the Stimulation of Germination and Radish Seeding Growth)
- 標題
- 伊豆赤沢海洋深層水の作物の発芽とカイワレの生育に及ぼす影響(Effects of Deep Seawater Pumped at Izu-Akazawa on the Stimulation of Germination and Radish Seeding Growth)
- 作者
- 岡本良子・有賀みずえ・山田勝久・今田千秋・小林武志・寺原 猛(Ryoko Okamoto, Mizue Aruga, Katsuhisa Yamada)
- 文件屬性
- 日本研究
- 知識分類
- 精緻農業
- 出版年
- 2013
- 刊名
- 海洋深層水研究
- 卷
- 14
- 期
- 1
- 頁
- P35-42
- 點閱數
- 2526
摘要
静岡県伊東市赤沢沖（水深800 m）から取水される伊豆赤沢海洋深層水（以下，DSW）の農業分 野への応用の可能性を検討するために，DSWが作物の発芽から生育初期に与える影響を評価した． その結果，20% (v/v) DSW までは大部分の品種で発芽抑制は見られず，生育初期の段階であるカ イワレ栽培において，5 % (v/v) DSW の添加で最も高い生育促進効果が確認され，同一濃度の直 上表面海水（以下，ssw）と比較しても重量において有意な差が確認された． また，緑化段階にお ける急激な葉の肥大が確認され，緑化開始初期において5%DSW 添加により葉体のクロロフィル 含量が高まることが確認された．
An attempt was made to evaluate the effects of deep seawater (DSW) pumped from an offshore depth of 800 m at Izu-Akazawa on the stimulation of radish seedling growth. The effects of DSW were examined from germination through to the early stages of radish seedling growth. Results showed that a 5% (v/v) solution of DSW indicated the highest performance of vegetable growth. In comparison with a 5% solution of surface seawater (SSW), the 5% DSW solution exhibited a si即ificant effect in terms of radish seedling growth. Furthermore, the size of shoot and leaf of radish seedling grew up rapidly in the experimental plot of 5% DSW after it was moved to a bright space. Also it was confirmed that chlorophyll contents in a leaf of radish seedling increased to about two times the amount compared with the comparison plot of purified water at early stage in the growth of them.
An attempt was made to evaluate the effects of deep seawater (DSW) pumped from an offshore depth of 800 m at Izu-Akazawa on the stimulation of radish seedling growth. The effects of DSW were examined from germination through to the early stages of radish seedling growth. Results showed that a 5% (v/v) solution of DSW indicated the highest performance of vegetable growth. In comparison with a 5% solution of surface seawater (SSW), the 5% DSW solution exhibited a si即ificant effect in terms of radish seedling growth. Furthermore, the size of shoot and leaf of radish seedling grew up rapidly in the experimental plot of 5% DSW after it was moved to a bright space. Also it was confirmed that chlorophyll contents in a leaf of radish seedling increased to about two times the amount compared with the comparison plot of purified water at early stage in the growth of them.