自動底面潅水によるストックのセル苗生産　（第２報）　　日射比例潅水法および定時潅水法における潅水頻度がセル苗の生長と生産性に及ぼす影響

• 後藤 丹十郎

  岡山大学農学部

• 藤本 裕也

  岡山大学農学部

• 吉田 裕一

  岡山大学農学部

• 景山 詳弘

  岡山大学農学部

書誌事項

タイトル別名

• Transplant Production on Stock with Automatically Subirrigated Cell Flat. (Part 2). Growth and Productivity of Transplants as Affected by Fertigation Frequency Controlled in Response to Solar Radiation or Scheduled in Time Course.
• Growth and Productivity of Transplants as Affected by Fertigation Frequency Controlled in Response to Solar Radiation or Scheduled in Time Course
• 日射比例灌水法および定時灌水法における灌水頻度がセル苗の生長と生産性に及ぼす影響

抄録

We demonstrated the practical utility of solar radiation mediated fertigation control for transplant production in a cell flat with an automatic ebb-and-flow fertigation system. Furthermore, we investigated seasonal changes in growth and productivity of stock (Matthiola incana R. Br.) cv. White Dorse as affected by fertigation frequency controlled in response to solar radiation (5 or 10 MJ · m^-2) and scheduled time course (once or twice per day).<BR>The shoot dry weight of transplants and fresh weight of cut flowers were higher in plants fertigated with every 5 MJ · m^-2 of solar radiation, sown between late April and late July. In plants sown during other periods, there was no significant difference in growtn and productivity among plants fertigated differently. When the plants sown in June were fertigated twice per day, the exposure was 5 MJ · m^-2 in average of cumulatlve solar radiation from fertigation to subseauent fertigation. However, the maximum cumulative value exceeded 8 MJ · m^-2. Water stress caused by the high solar radiation accompanied by high temperature and large saturation deficit may have resulted in reduced growth of the transplants and decreased quality of the cut flowers.<BR>When the stock transplants were grown in a cell flat (220 cells of 12ml cell volume), suffcient but not excess fertigation could be obtained by supplying nutrient solution every 5 MJ · m^-2 of solar radiation with an automatic ebb-and-flow fertigation system.

収録刊行物

• 植物工場学会誌

  植物工場学会誌 14 (2), 87-91, 2002

  日本生物環境工学会

キーワード

• automatic fertigation
• ebb-and-flow system
• solar radiation
• time course
• water

詳細情報

• CRID: 1390282679357058048
• NII論文ID: 130002033377
• DOI: 10.2525/jshita.14.87
• ISSN: 18803555
• ISSN: 09186638
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可