JP5470667B2 - Cultivated plant local cooling device and cultivated plant local cooling method - Google Patents

Cultivated plant local cooling device and cultivated plant local cooling method Download PDF

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JP5470667B2
JP5470667B2 JP2008217109A JP2008217109A JP5470667B2 JP 5470667 B2 JP5470667 B2 JP 5470667B2 JP 2008217109 A JP2008217109 A JP 2008217109A JP 2008217109 A JP2008217109 A JP 2008217109A JP 5470667 B2 JP5470667 B2 JP 5470667B2
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cultivated plant
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leaf temperature
local cooling
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弘太郎 高山
弘重 仁科
誠一 有馬
堅治 羽藤
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Ehime University NUC
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

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Description

本発明は、栽培植物の局所に対して冷却を行うための装置および方法に関する。 The present invention relates to an apparatus and method for cooling a local area of a cultivated plant.

ビニールハウスや植物工場などによって、野菜や果物などの植物を栽培することは盛んに行われているが、夏場において室温が上昇することによって栽培植物に過大なストレスがかかることを防止するために、冷房が行われている。 Growing plants such as vegetables and fruits by plastic houses and plant factories are actively conducted, but in order to prevent excessive stress on the cultivated plants due to an increase in room temperature in summer, Air conditioning is taking place.

ビニールハウスや植物工場などの冷房として、細霧ノズルによって細霧を室内に吐出して、顕熱を潜熱化することによって室内の気温を下げることが非特許文献１や特許文献１，２などに記載されている。これらの文献に記載されている細霧吐出は、室内全体の冷房を目的としたものであり、例えば栽培植物よりできるだけ離れた場所より、ビニールハウスの全体に対して広く細霧を吐出している。
特開２００７−３１９０２３号公報 特開２００３−９６７８号公報 古在豊樹、後藤英司、富士原和宏、最新施設園芸学、Ｐ９３，２００６年１月、朝倉書店 Non-Patent Document 1, Patent Documents 1 and 2, etc., for cooling greenhouses, plant factories, etc., discharge the fine mist into the room with a fine mist nozzle and make the sensible heat latent heat. Have been described. The fine mist discharge described in these documents is for the purpose of cooling the entire room, and for example, the fine mist is widely discharged over the entire greenhouse from a place as far away as possible from the cultivated plant. .
JP 2007-319023 A JP 2003-9678 A Toyoki Furusato, Eiji Goto, Kazuhiro Fujiwara, Latest Horticulture, P93, January 2006, Asakura Shoten

非特許文献１、特許文献１および特許文献２などの細霧による冷房は、短時間で室温を下げることができるという効果を有する。しかし、冷房効果の持続時間は短い。図１は従来の細霧冷房による室温の変化を示すグラフである。細霧を噴出後すぐに室温は低下し始めるが、約３０秒後には室温は上昇に転じる。結局、２分程度しか冷房効果は持続しない。 Cooling by fine mist such as Non-Patent Document 1, Patent Document 1 and Patent Document 2 has an effect that the room temperature can be lowered in a short time. However, the duration of the cooling effect is short. FIG. 1 is a graph showing changes in room temperature due to conventional fine fog cooling. The room temperature starts to decrease immediately after the fine mist is ejected, but after about 30 seconds, the room temperature starts to increase. After all, the cooling effect lasts only for about 2 minutes.

また、室内全体に大量の水を細霧として吐出する必要があり、エネルギー効率は高くない。さらに、栽培植物の部位によって冷却の必要性は異なるので、植物全体を一律に冷却するのでは適切な環境制御は行えない。 Moreover, it is necessary to discharge a large amount of water as a fine mist to the whole room, and energy efficiency is not high. Furthermore, since the necessity of cooling changes with the site | parts of a cultivated plant, appropriate environmental control cannot be performed if the whole plant is cooled uniformly.

この発明は、栽培植物の最も冷却を必要とする部位のみを効果的に冷却することができる冷却装置および冷却方法を提供することを目的とする。 An object of this invention is to provide the cooling device and cooling method which can cool effectively only the site | part which needs cooling most of a cultivated plant.

上記の目的を解決するために、本発明の栽培植物局部冷却装置は、栽培植物の局所に対して細霧を吐出する細霧ノズルと、細霧の吐出を制御する制御装置とを有し、栽培植物の局所に水滴を付着させる。栽培植物の葉温を測定する葉温測定装置を有し、葉温測定装置が出力する葉温データに基づいて細霧の吐出を行うようになすことが好ましい。 To solve the above object, cultivated plants local cooling device of the present invention, possess a fine mist nozzles for ejecting fine mist to the local cultivated plants, and a control device for controlling the discharge of the fine mist, Adhere water droplets locally to the cultivated plant . It is preferable to have a leaf temperature measuring device that measures the leaf temperature of the cultivated plant, and to discharge fine mist based on the leaf temperature data output by the leaf temperature measuring device.

また、本発明の栽培植物局部冷却方法は、細霧ノズルにより栽培植物の局所に対して細霧を吐出して水滴を付着させることによって栽培植物の局所を冷却するものである。葉温測定装置により葉温を測定し、葉温データに基づいて細霧の吐出を行うことが好ましい。さらに、栽培植物の成長点に対して細霧を吐出するように細霧ノズルを設け、細霧によって栽培植物の成長点を冷却するようにすることもできる。
Further, cultivated plants local cooling method of the present invention is to cool the local cultivated plants by attaching the water droplets by discharging the fine mist to the local cultivated plants by fogging nozzle. It is preferable to measure the leaf temperature with a leaf temperature measuring device and discharge the fine mist based on the leaf temperature data. Furthermore, a fine mist nozzle may be provided so as to discharge a fine mist to the growth point of the cultivated plant, and the growth point of the cultivated plant can be cooled by the fine mist.

この発明の栽培植物局部冷却装置および栽培植物局部冷却方法によれば、栽培植物の冷却を必要とする部位に細霧を吐出して水滴を付着させ、これを蒸発させることによって、効果的に冷却を行うことができる。冷却効果の持続時間は長い。また、水やエネルギーの消費は小さくなる。 According to the cultivated plant local cooling device and the cultivated plant local cooling method of the present invention, it is effectively cooled by ejecting fine mist to a portion that requires cooling of the cultivated plant, adhering water droplets, and evaporating them. It can be performed. The duration of the cooling effect is long. Also, water and energy consumption are reduced.

この発明を実施するための最良の形態について説明する。図２は栽培植物局部冷却装置の概要を示す側面図、図３は同正面図である。ビニールハウス１内に設置された植物工場に適用した例である。 The best mode for carrying out the present invention will be described. FIG. 2 is a side view showing an outline of the cultivated plant local cooling device, and FIG. 3 is a front view thereof. It is the example applied to the plant factory installed in the greenhouse 1.

ビニールハウス１内には栽培ベッド２が設けられており、この栽培ベッド２で植物３が栽培されている。植物としては、例えばトマト、キュウリ、ナス、パプリカなどに適用することができる。 A cultivation bed 2 is provided in the greenhouse 1, and a plant 3 is grown on the cultivation bed 2. As a plant, it can apply to a tomato, a cucumber, eggplant, paprika, etc., for example.

パイプ４は栽培ベッド２に沿って設けられており、このパイプ４に細霧ノズル５が設けられている。細霧ノズル５は微細な水滴を吐出するもので、例えば細霧冷房用として市販されているノズルを使用することができる。 The pipe 4 is provided along the cultivation bed 2, and the fine fog nozzle 5 is provided on the pipe 4. The fine fog nozzle 5 discharges fine water droplets. For example, a nozzle commercially available for fine fog cooling can be used.

従来の細霧冷房においては、できるだけ細霧が植物体に付着しないようにするため、細霧吐出部は植物体から離れた位置に置かれており、栽培ベッドとそれに隣接する栽培ベッドの間の天井付近に設置されている。しかし、この発明では、細霧ノズル５は、植物体の冷却を行うべき部位に細霧が吐出される位置に設けられる。 In the conventional fine fog cooling, in order to prevent the fine fog from adhering to the plant body as much as possible, the fine fog discharge part is placed at a position away from the plant body, and between the cultivation bed and the cultivation bed adjacent to it. It is installed near the ceiling. However, in the present invention, the fine mist nozzle 5 is provided at a position where the fine mist is discharged to a site where the plant body is to be cooled.

冷却対象の部位としては、細胞分裂が盛んで植物の発育に重要な成長点や、花芽などが挙げられるが、ここでは成長点を選択している。トマトなどの植物工場における栽培では、栽培期間中、成長点が一定の高さに固定されるため、この高さに合わせてパイプ４および細霧ノズル５を設置する。水はポンプ（図示省力）によって水タンク６からパイプ４を介して細霧ノズル５へ供給される。 Examples of sites to be cooled include growth points and flower buds that are important for plant growth because cell division is active. Here, the growth points are selected. In cultivation in plant factories such as tomatoes, the growth point is fixed at a certain height during the cultivation period, so the pipe 4 and the fine fog nozzle 5 are installed in accordance with this height. Water is supplied from the water tank 6 to the fine mist nozzle 5 through the pipe 4 by a pump (labor saving).

また、この栽培植物局部冷却装置は細霧の吐出を制御する制御装置７を有する。制御装置７によってポンプの作動・停止を制御してもよいが、制御弁８の開閉によって細霧の吐出を制御することもできる。例えば室内に設けられた温度計や湿度計などによって、制御装置７は植物の水ストレスの状態を予測し、冷却が必要となったときに細霧を吐出させることができる。ここでは、葉温測定装置９としてサーモグラフィ（サーモトレーサー、ＮＥＣ三栄：ＴＨ９１００ＭＬＮ）を使用し、冷却対象部位付近の葉温を観測し、その葉温データに基づいて細霧の吐出を制御している。サーモグラフィを植物３から３ｍ程度の距離において測定した。 Moreover, this cultivation plant local cooling device has the control apparatus 7 which controls discharge of a fine fog. Although the operation / stop of the pump may be controlled by the control device 7, the discharge of the fine mist can be controlled by opening / closing the control valve 8. For example, the control device 7 can predict the state of water stress of the plant by using a thermometer or a hygrometer provided indoors, and can discharge fine mist when cooling is necessary. Here, a thermography (thermo tracer, NEC Sanei: TH9100MLN) is used as the leaf temperature measuring device 9, the leaf temperature near the portion to be cooled is observed, and the discharge of fine mist is controlled based on the leaf temperature data. . The thermography was measured at a distance of about 3 m from the plant 3.

つぎに、この発明の実施例について説明する。愛媛県松山市樽味にある愛媛大学農学部附属制御化農業実験実習施設の調節温室にて実施した。栽培植物としては、トマトの桃太郎ファイト(Salanum Iycopersicum.cv.Momotaro-Faito)を使用した。 Next, examples of the present invention will be described. The experiment was conducted in a controlled greenhouse in a controlled agricultural experiment training facility attached to the Faculty of Agriculture, Ehime University, in Tarumi, Matsuyama City, Ehime Prefecture. As a cultivated plant, Tomato Momotaro Fight (Salanum Iycopersicum.cv.Momotaro-Faito) was used.

植物の葉面に細霧を吐出し、葉温および光合成速度を測定した。葉温はサーモトレーサーにより測定した。光合成速度は、ＬＥＤ冷光光源（ＬＩ−ＣＯＲ：６４００−０２Ｂ）を使用し、光強度ＰＰＦ７００ μｍｏｌ ｍ-2ｓ-1で、光合成蒸散測定装置（ＬＩ−ＣＯＲ：ＬＩ−６４００）を用いて測定した。トマト葉をリーフチャンバーに固定し、気温、葉温、光合成速度が安定した後、リーフチャンバーを開け、葉面の裏側に細霧を吐出し、再びリーフチャンバーを閉めて葉温と光合成速度を測定した。図４は葉温および光合成速度の時間変化を示すグラフである。 A fine mist was discharged onto the leaf surface of the plant, and the leaf temperature and the photosynthetic rate were measured. Leaf temperature was measured with a thermotracer. The photosynthetic rate was measured using an LED cold light source (LI-COR: 6400-02B) at a light intensity PPF of 700 μmol m −2 s −1 using a photosynthetic transpiration measuring device (LI-COR: LI-6400). . After fixing the tomato leaves to the leaf chamber, the temperature, leaf temperature, and photosynthetic rate are stabilized, then the leaf chamber is opened, a fine mist is discharged to the back of the leaf surface, the leaf chamber is closed again, and the leaf temperature and photosynthetic rate are measured. did. FIG. 4 is a graph showing temporal changes in leaf temperature and photosynthetic rate.

細霧の吐出によって葉温が低下したことが確認できる。しかも、葉温低下は１０分程度も持続しており、従来の細霧冷房に比べて植物体への冷却効果の持続時間が大幅に向上していることがわかる。 It can be confirmed that the leaf temperature has decreased due to the discharge of fine fog. In addition, the decrease in leaf temperature continues for about 10 minutes, and it can be seen that the duration of the cooling effect on the plant body is significantly improved compared to conventional fine fog cooling.

これまでは、植物に細霧を直接吐出すると水滴が付着し、光合成が阻害されると考えられてきた。そのため、細霧冷房においては吐出ノズルを植物からできる限り遠ざけて設置していた（例えば特許文献１の００２２段落）。しかし、この発明の葉温測定装置および栽培植物局部冷却方法によれば、細霧の吐出量を適切に管理する限り、光合成を阻害せずに葉温を低下させることができる。図４においても、光合成速度がほとんど低下しないことがわかる。なお、吐出時に光合成速度のグラフが落ち込んでいるのは、リーフチャンバーの開閉によってデータが一時的に取得できなかったことによるものであり、光合成速度の低下を示すものではない。 Until now, it has been thought that when a fine mist is directly discharged onto a plant, water droplets adhere to it and photosynthesis is inhibited. Therefore, in fine fog cooling, the discharge nozzle was installed as far as possible from the plant (for example, paragraph 0022 of Patent Document 1). However, according to the leaf temperature measuring device and the cultivated plant local cooling method of the present invention, the leaf temperature can be lowered without inhibiting photosynthesis as long as the discharge amount of the fine mist is appropriately managed. Also in FIG. 4, it can be seen that the photosynthesis rate hardly decreases. In addition, the graph of the photosynthetic rate at the time of discharge falls because the data could not be temporarily acquired by opening and closing the leaf chamber, and does not indicate a decrease in the photosynthetic rate.

以上、この発明の葉温測定装置および栽培植物局部冷却方法によって、光合成を阻害せずに葉温を低下させることができる。冷却効果は長時間持続する。従来の細霧冷房に比べて、はるかに少ない細霧の吐出でよく、水やエネルギーの消費は小さい。 As described above, the leaf temperature can be lowered without inhibiting photosynthesis by the leaf temperature measuring device and the cultivated plant local cooling method of the present invention. The cooling effect lasts for a long time. Compared to the conventional fine fog cooling, much less fine fog discharge is required, and the consumption of water and energy is small.

従来の細霧冷房による室温の変化を示すグラフである。It is a graph which shows the change of the room temperature by the conventional fine fog cooling. 栽培植物局部冷却装置の概要を示す側面図である。It is a side view which shows the outline | summary of a cultivation plant local cooling device. 同正面図トマトである。It is a front view tomato. 葉温および光合成速度の時間変化を示すグラフである。It is a graph which shows the time change of leaf temperature and photosynthesis rate.

符号の説明Explanation of symbols

１．ビニールハウス
２．栽培ベッド
３．植物
４．パイプ
５．細霧ノズル
６．水タンク
７．制御装置
８．制御弁
９．葉温測定装置（サーモグラフィ） 1. Plastic house 2. Cultivation bed
3. Plant 4. Pipe 5. Fine fog nozzle6. 6. Water tank Control device 8. 8. Control valve Leaf temperature measuring device (thermography)

Claims (4)

栽培植物の成長点を一定の高さに固定する植物工場に設置する栽培植物局部冷却装置であり、栽培植物の成長点のみに対して細霧を吐出する栽培植物の成長点の高さに設けられた細霧ノズルと、細霧の吐出を制御する制御装置とを有し、栽培植物の成長点のみに水滴を付着させる栽培植物局部冷却装置。 It is a cultivated plant local cooling device installed in a plant factory that fixes the growth point of the cultivated plant at a certain height, and is provided at the height of the cultivated plant growth point that discharges fine fog only for the growth point of the cultivated plant A cultivated plant local cooling device that has a fine mist nozzle and a control device that controls discharge of the fine mist, and attaches water droplets only to the growth points of the cultivated plants. 栽培植物の葉温を測定する葉温測定装置を有し、葉温測定装置が出力する葉温データに基づいて成長点のみに対して細霧の吐出を行う請求項１に記載の栽培植物局部冷却装置。 The cultivated plant local part according to claim 1 which has a leaf temperature measuring device which measures the leaf temperature of a cultivated plant, and discharges fine fog only to a growth point based on leaf temperature data which a leaf temperature measuring device outputs. Cooling system. 成長点を一定の高さに固定して植物を栽培し、栽培植物の成長点の高さに設けられた細霧ノズルにより栽培植物の成長点のみに対して細霧を吐出して水滴を付着させることによって栽培植物の成長点を冷却する栽培植物局部冷却方法。 Plants are cultivated with the growth point fixed at a certain height, and a fine mist is ejected only to the growth point of the cultivated plant by a fine mist nozzle provided at the height of the cultivated plant to attach water droplets. The cultivation plant local cooling method which cools the growth point of a cultivation plant by making it do. 葉温測定装置により葉温を測定し、葉温データに基づいて成長点のみに対して細霧の吐出を行う請求項３に記載の栽培植物局部冷却方法。 The cultivation plant local cooling method of Claim 3 which measures leaf temperature with a leaf temperature measuring apparatus, and discharges a fine fog only with respect to a growth point based on leaf temperature data.
JP2008217109A 2008-08-26 2008-08-26 Cultivated plant local cooling device and cultivated plant local cooling method Expired - Fee Related JP5470667B2 (en)

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