Journal Article 北陸に適合した省エネルギー型植物栽培施設の開発
Development of an energy-saving cultivation system suitable for the Hokuriku Region

佐藤, 正幸  ,  坂本, 敏夫  ,  Masayuki, Sato  ,  Toshio, Sakamoto  ,  金沢大学自然科学研究科生命科学専攻:株式会社光植栽研究所  ,  金沢大学自然科学研究科生命科学専攻  ,  Division of Life Science, Graduate School of Natural Science and Technology, Kanazawa University:Light & Plants Research Corp.  ,  Division of Life Science, Graduate School of Natural Science and Technology, Kanazawa University

93 ( 9 )  , pp.542 - 546 , 2015-09-25
ISSN:09193758
NCID:AN10401118
Description
日本の農業の振興のためには,一般の農業者が導入可能な安価で堅牢な自動制御を付加した園芸施設の構築が必要である.特に北陸の冬期の日照不足に適合させるためには補光対策が不可欠である.筆者たちは最小限度の補光を実施するが,冷暖房を使わずに温度と光の環境を自動制御する省エネルギー型の植物栽培施設をガラス温室内に構築した.この施設を用いて,日照が限られている北陸地方の冬期にイチゴを栽培できることを示した.本施設は,冷暖房装置を用いていないため,導入コストが低いだけでなく,ランニングコストも低いという特徴をもつ.今後,さらなる改良に継続して取り組み,温度制御の性能を向上して実用性を高めることができると考える.
We have developed an energy-saving horticulture facility inside a glass greenhouse. There is limited sunlight and low temperatures during the winter season. Thus, controlling light intensity and temperature inside the facility is important for maintaining a natural environment in the Hokuriku region. The temperature was monitored at the top of the greenhouse, and supplement lamps were turned on when the air temperature from the top of the greenhouse was below 20℃ during the day. The light supplement system maintained the light intensity in the planting area at more than 150μmol m^<-2> s^<-1> regardless of the weather. On sunny days, the warmed air in the top of the greenhouse was circulated downward to the plantation area, and thermal storage units made of PET bottles were used to keep the hydroponic culture solution tank warm. The energy-saving air cooling system was constructed using a combination of water spray and an electric fan. A ventilation duct was used to drive the outside air. When the temperature inside the cultivation area exceeded 28℃, the cooling system was activated, and an electric fan pumped outside air into the plant cultivation area to maintain the temperature under 36℃. The systems maintained the temperature in the planting area at 5-36℃ when the outside temperature was -5 to 20℃. Our results confirm this system is applicable to winter strawberry cultivation in the Hokuriku region and does not require air conditioning or fuel consumption for a heater.
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