JP6737130B2 - Plant cultivation equipment - Google Patents

Plant cultivation equipment Download PDF

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JP6737130B2
JP6737130B2 JP2016211865A JP2016211865A JP6737130B2 JP 6737130 B2 JP6737130 B2 JP 6737130B2 JP 2016211865 A JP2016211865 A JP 2016211865A JP 2016211865 A JP2016211865 A JP 2016211865A JP 6737130 B2 JP6737130 B2 JP 6737130B2
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nutrient solution
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多田　誠人
誠人 多田
達也 手塚
達也 手塚
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Iseki and Co Ltd
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/14—Measures for saving energy, e.g. in green houses

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Description

本発明は、養液で植物を栽培するハウス型の植物栽培設備に関する。 The present invention relates to a house-type plant cultivation facility for cultivating a plant with a nutrient solution.

特許文献１には、太陽光を投下するビニルハウス内において、養液で植物を栽培する植物栽培設備が記載されている。この植物栽培設備においては、適切に植物が成長するように、積算日射量に応じた遮光カーテンの制御、養液量の制御、ハウス内暖房制御、細霧冷房制御を行うことについて記載されている。 Patent Document 1 describes a plant cultivation facility for cultivating a plant with a nutrient solution in a vinyl house where sunlight is dropped. In this plant cultivation equipment, it is described that the control of the light-shielding curtain according to the accumulated solar radiation amount, the control of the nutrient solution amount, the house heating control, and the fine mist cooling control are performed so that the plant grows properly. ..

特許文献２には、植物の光合成の状態を測定する植物生育診断装置について記載されている。 Patent Document 2 describes a plant growth diagnosis apparatus for measuring the photosynthetic state of plants.

特開２０１１−１９４３８号公報JP, 2011-19438, A 特開２０１６−１３１５４６号公報JP, 2016-131546, A

本発明は、植物の光合成の状態に応じて適切なハウス内の各種装置の制御を行える植物栽培設備を提供することを課題とする。 An object of the present invention is to provide a plant cultivation facility that can appropriately control various devices in a house according to the photosynthesis state of the plant.

かかる課題を解決するために、
請求項１記載の発明は、
太陽光を通過させる透明性部材で覆われたハウス内で養液にて作物を栽培する植物栽培設備において、
前記ハウスには、前記透明性部材を通過する太陽光を遮光する遮光カーテンと、日射量を計測する日射計と、植物の光合成の状態を測定する光合成測定装置を備え、日射計が設定する日射量以上を測定すると遮光カーテンが閉制御する構成とし、
光合成測定装置により測定される光合成の状態を示す値が設定値よりも小さいと、前記設定する日射量を低くする制御を行う制御部を備えることを特徴とする。 In order to solve this problem,
The invention according to claim 1 is
In a plant cultivation facility for cultivating a crop with a nutrient solution in a house covered with a transparent member that allows sunlight to pass,
The house is provided with curtains for blocking sunlight passing through the transparent member, and solar radiation meter for measuring the amount of solar radiation, photosynthesis measuring device for measuring the state of plant photosynthesis, pyranometer is set insolation If you measure more than the amount, the light-shielding curtain will be closed.
When the value indicating the state of photosynthesis measured by the photosynthesis measuring device is smaller than the set value , a control unit is provided for performing control to reduce the set solar radiation amount .

請求項２記載の発明は、
太陽光を通過させる透明性部材で覆われたハウス内で養液にて作物を栽培する植物栽培設備において、
前記ハウスには、ハウス内の温度を調節するための換気用の開閉窓と、ハウス内の室温を測定する室温計と、植物の光合成の状態を測定する光合成測定装置を備え、室温計が設定温度以上であることを測定すると、開閉窓が開制御する構成とし、
光合成測定装置により測定される光合成の状態を示す値が設定値よりも小さいと、前記設定する室温を低くする制御を行う制御部を備えることを特徴とする。 The invention according to claim 2 is
In a plant cultivation facility for cultivating a crop with a nutrient solution in a house covered with a transparent member that allows sunlight to pass,
The house is provided with an opening/closing window for ventilation for adjusting the temperature in the house, a room temperature meter for measuring the room temperature in the house, and a photosynthesis measuring device for measuring the photosynthesis state of the plant, and the room temperature meter is set. When it is measured that the temperature is higher than the temperature, the opening and closing window is controlled to open.
When the value indicating the state of photosynthesis measured by the photosynthesis measuring device is smaller than the set value , a control unit for performing control to lower the set room temperature is provided.

請求項３記載の発明は、
太陽光を通過させる透明性部材で覆われたハウス内で養液にて作物を栽培する植物栽培設備において、
前記ハウスには、養液の濃度を測定する養液濃度管理センサと、植物の光合成の状態を測定する光合成測定装置を備え、設定する濃度になるよう養液を管理制御する構成とし、
光合成測定装置により測定される光合成の状態を示す値が設定値よりも小さいと、前記設定する濃度を低くする制御を行う制御部を備えることを特徴とする。 The invention according to claim 3 is
In a plant cultivation facility for cultivating a crop with a nutrient solution in a house covered with a transparent member that allows sunlight to pass,
The house is provided with a nutrient solution concentration management sensor for measuring the concentration of the nutrient solution, and a photosynthesis measuring device for measuring the photosynthetic state of the plant, and is configured to manage and control the nutrient solution to a set concentration,
When the value indicating the state of photosynthesis measured by the photosynthesis measuring device is smaller than the set value, a control unit is provided for performing control for lowering the set density.

請求項４記載の発明は、
請求項１から請求項３いずれかに記載の発明において、
ハウスには、植物に加湿を行う加湿器と、ハウス内の湿度を測定する湿度計と、湿度計が設定湿度以下を測定すると、加湿器を運転する構成とし、
光合成測定装置により測定される光合成の状態を示す値が設定値よりも小さいと、前記設定湿度を高く補正する制御部を備えることを特徴とする。 The invention according to claim 4 is
In the invention according to any one of claims 1 to 3,
In the house, a humidifier for humidifying the plant, a hygrometer for measuring the humidity inside the house, and a configuration in which the humidifier is operated when the hygrometer measures a humidity below a set humidity,
When the value indicating the state of photosynthesis measured by the photosynthesis measuring device is smaller than the set value, a control unit for correcting the set humidity to a high value is provided.

請求項５に記載の発明は、
請求項１から請求項４いずれかに記載の発明において、光合成の状態を示す値が設定値よりも小さいとは、前記制御部による制御を行う前日に測定した値が設定値より低いことであることを特徴とする。 The invention according to claim 5 is
In the invention according to any one of claims 1 to 4, that the value indicating the state of photosynthesis is smaller than a set value means that the value measured on the day before the control by the control unit is lower than the set value. It is characterized by

本発明により、植物の光合成が活発でない時に、植物の生育に適した制御を行う植物栽培設備を提供することができる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a plant cultivation facility that performs control suitable for plant growth when photosynthesis of the plant is not active.

植物栽培設備のシステム図System diagram of plant cultivation equipment 植物栽培設備の内部を説明する図Figure explaining the inside of plant cultivation equipment 光合成測定装置が走行していることを示している植物栽培設備の内部を説明する図The figure explaining the inside of the plant cultivation equipment which shows that the photosynthesis measuring device is running. 光合成機能の測定を示すグラフGraph showing measurement of photosynthetic function 制御ブロック図Control block diagram

本発明の実施の形態の植物栽培設備について、以下説明する。 The plant cultivation equipment according to the embodiment of the present invention will be described below.

ハウスＨは太陽光を透過するビニルハウスである。ハウスＨ内には横長に延びる栽培用の培地１を多数並設する。培地１に移植した苗の茎ｋは誘引紐２に沿って伸長する。誘引紐２の上端には誘引フック３を設け、誘引フック３は培地１と交差する姿勢の誘引ワイヤ４に引っ掛ける構成である。 The house H is a vinyl house that transmits sunlight. In the house H, a large number of culture media 1 extending horizontally are arranged side by side. The stem k of the seedling transplanted to the medium 1 extends along the attracting string 2. The attracting hook 3 is provided on the upper end of the attracting string 2, and the attracting hook 3 is hooked on the attracting wire 4 in a posture intersecting with the medium 1.

培地１に養液を供給するシステムについて説明する。 A system for supplying the nutrient solution to the medium 1 will be described.

肥料を収容する肥料タンク５と、ＰＨ調整剤を収容するＰＨ調整タンク６と、希釈用の原水を収容する原水タンク７、原水及び肥料を混合して養液にする混合タンク８を備える。 A fertilizer tank 5 for containing fertilizer, a PH adjusting tank 6 for containing a PH adjusting agent, a raw water tank 7 for containing raw water for dilution, and a mixing tank 8 for mixing raw water and fertilizer to make a nutrient solution.

混合タンク８から培地１へ養液を供給する供給管９と、培地１から養液を排出する排液管１０を設ける。供給管９には養液を培地１に供給する供給ポンプ１１を設け、排液管１０は排出された養液を収容する排液タンク１３に接続する。排液タンク１３の養液を混合タンク８に供給する排液ポンプ１２及び戻し管１４を設け、養液を再利用する構成である。養液はその濃度を養液濃度管理センサ１５で測定し、濃度（いわゆるＥＣ値）が設定値になるように原水・肥料・ＰＨ調整剤を適宜ポンプ１６、１７、１８で供給する。 A supply pipe 9 for supplying a nutrient solution from the mixing tank 8 to the medium 1 and a drain pipe 10 for discharging the nutrient solution from the medium 1 are provided. The supply pipe 9 is provided with a supply pump 11 that supplies the nutrient solution to the culture medium 1, and the drainage pipe 10 is connected to a drainage tank 13 that stores the discharged nutrient solution. A drainage pump 12 for supplying the nutrient solution from the drainage tank 13 to the mixing tank 8 and a return pipe 14 are provided to reuse the nutrient solution. The concentration of the nutrient solution is measured by the nutrient solution concentration control sensor 15, and raw water, fertilizer, and PH adjusting agent are appropriately supplied by pumps 16, 17, and 18 so that the concentration (so-called EC value) becomes a set value.

ハウスＨの天井部２０には換気用の開閉窓２１を設ける。また、ハウスＨの上部にはノズルで細霧を噴射する加湿器２２を設ける。ハウスＨ内には、ハウスＨを透過する太陽光を遮光する遮光カーテン２３を設ける。また、培地１間を走行しながら植物の光合成の状態を測定する光合成測定装置２４を設ける。開閉窓２１、加湿器２２、遮光カーテン２３、光合成測定装置２４は制御部２５（植物栽培設備の中央制御盤）で制御する構成である。また、ハウスＨを照射する日射量を計測する日射計２６を設ける。 An opening/closing window 21 for ventilation is provided on the ceiling portion 20 of the house H. Further, a humidifier 22 for ejecting a fine mist with a nozzle is provided above the house H. In the house H, a light-shielding curtain 23 that shields sunlight that passes through the house H is provided. Further, a photosynthesis measuring device 24 for measuring the photosynthesis state of the plant while traveling between the culture media 1 is provided. The opening/closing window 21, the humidifier 22, the light-shielding curtain 23, and the photosynthesis measuring device 24 are configured to be controlled by the control unit 25 (central control panel of plant cultivation equipment). Further, a pyranometer 26 for measuring the amount of solar radiation that irradiates the house H is provided.

光合成測定装置２４は培地１間のスペースを無人で走行しながら、植物に光を照射して植物の光合成の状態を測定するもので、例えば特開２０１６−１３１５４６号公報のような構成が考えられる。 The photosynthesis measuring device 24 measures the photosynthesis state of the plant by irradiating the plant with light while running unmanned in the space between the culture media 1. For example, a configuration as disclosed in Japanese Unexamined Patent Publication No. 2016-131546 can be considered. ..

光合成測定装置２４の測定結果に基づく植物栽培設備の各装置の制御について、以下、説明する。 The control of each device of the plant cultivation equipment based on the measurement result of the photosynthesis measuring device 24 will be described below.

日射計２６による遮光カーテン２３の制御について説明する。 The control of the shading curtain 23 by the pyranometer 26 will be described.

遮光カーテン２３は、日射計２６が設定する日射量（例えば、日射量６００Ｗ／ｍ２以上）を計測すると、遮光カーテン２３を閉制御する。光合成測定装置２４が光合成の状態、すなわち光合成機能が低下していると設定されている点Ｐ（例えば１．５Ｐ／Ｓ）を下回ることを測定すると、設定する日射量を低く設定するよう補正する（例えば、日射量３００Ｗ／ｍ２以上）。これは、光合成機能が低下している時に、強い太陽光の照射を受けると植物にストレスがかかり萎れる場合があるためである。本実施の形態では日射量を設定基準値としているが、日射積算量を設定基準値としても良い。 When the shading curtain 23 measures the amount of solar radiation set by the pyranometer 26 (for example, the amount of solar radiation is 600 W/m 2 or more), the shading curtain 23 is controlled to be closed. When the photosynthesis measuring device 24 measures that the photosynthesis state is below the point P (for example, 1.5 P/S) at which the photosynthesis function is set to be degraded, the photosynthesis measurement device 24 corrects the set solar radiation amount to be low. (For example, the amount of solar radiation is 300 W/m2 or more). This is because when the photosynthetic function is lowered, the plant may be stressed and withered when exposed to strong sunlight. In the present embodiment, the solar radiation amount is used as the setting reference value, but the solar radiation integrated amount may be used as the setting reference value.

開閉窓２１の開閉制御について説明する。 The opening/closing control of the opening/closing window 21 will be described.

開閉窓２１は室温計２７で測定するハウスＨ内の室温が設定値以上（例えば、２２℃以上）を測定すると、開閉窓２１が開いて、ハウスＨ内を換気して室温を下げる制御を設定している。光合成測定装置が光合成の状態、すなわち光合成機能が低下していると設定されている点Ｐ（例えば１．５Ｐ／Ｓ）を下回ることを測定すると、設定する室温を低く補正する（例えば、１８℃）。これは、光合成機能が低下している時に、室温が高いと、植物からの蒸散量が増加し、植物が萎れる場合があるためである。また、日射計２６は高価なので、廉価な室温計２７で代替することも可能である。また、室温が高い時には加湿器２２で加湿して室温を下げることも可能である。 When the room temperature inside the house H measured by the room temperature meter 27 of the opening/closing window 21 is higher than a set value (for example, 22° C. or higher), the opening/closing window 21 is opened to set the control to lower the room temperature by ventilating the inside of the house H. doing. When the photosynthesis measuring device measures that the temperature is below the photosynthesis state, that is, the point P (for example, 1.5 P/S) set as the photosynthesis function is lowered, the room temperature to be set is corrected to a low value (for example, 18° C.). ). This is because when the room temperature is high while the photosynthetic function is lowered, the amount of transpiration from the plant may increase and the plant may wither. Further, since the pyranometer 26 is expensive, it is possible to replace it with an inexpensive room temperature meter 27. When the room temperature is high, the room temperature can be lowered by humidifying with the humidifier 22.

加湿器２２の加湿制御について説明する。 Humidification control of the humidifier 22 will be described.

ハウスＨ内は、湿度計２８で測定した室内の湿度が設定湿度以下（例えば湿度６０％以下）になると、加湿器２２が作動して加湿する制御を設定としている。光合成測定装置２４が光合成の状態、すなわち光合成機能が低下していると設定されている点Ｐ（例えば１．５Ｐ／Ｓ）を下回ることを測定し、かつ、室温が設定以上高いか、又は、日射量が設定値以上になると、設定する湿度を高く補正する（例えば、湿度７５％）。これは、光合成機能が低下している状態で強い太陽光を受けるか、又は室温が高いと、植物の蒸散量が増加し、植物が萎れる場合があるためである。そのため、室内の湿度を高くする制御を行うことで、植物の蒸散を抑制することができる。 In the house H, when the indoor humidity measured by the hygrometer 28 becomes equal to or lower than a set humidity (for example, humidity of 60% or less), the humidifier 22 is activated to humidify. The photosynthesis measuring device 24 measures the photosynthesis state, that is, the photosynthesis function falls below a point P (for example, 1.5 P/S) set as the photosynthesis function is lowered, and the room temperature is higher than the set temperature, or When the amount of solar radiation exceeds the set value, the set humidity is corrected to a high value (for example, the humidity is 75%). This is because if the plant receives strong sunlight in a state where the photosynthetic function is lowered or the room temperature is high, the transpiration amount of the plant may increase and the plant may wither. Therefore, it is possible to suppress the transpiration of plants by controlling the indoor humidity to be high.

養液濃度（ＥＣ値）の管理について説明する。 The management of nutrient solution concentration (EC value) will be described.

養液濃度は、養液濃度センサ１５により設定する養液濃度（例えば、８．０ｄｓ／ｍ）になるように制御されている。光合成測定装置２４が光合成の状態、すなわち光合成機能が低下していると設定されている点Ｐ（例えば１．５Ｐ／Ｓ）を下回ることを測定すると、養液濃度の設定値を下げる補正を行う（例えば７．５ｄｓ／ｍ）。これは、光合成機能が低下している時は、養液濃度を下げることで、植物による水の吸水を行い易くして植物を萎れにくくすることができる。 The nutrient solution concentration is controlled to be a nutrient solution concentration set by the nutrient solution concentration sensor 15 (for example, 8.0 ds/m). When the photosynthesis measuring device 24 measures that the photosynthesis state is below the point P (for example, 1.5 P/S) at which the photosynthesis function is set to be lowered, correction is performed to lower the set value of the nutrient solution concentration. (For example, 7.5 ds/m). This is because when the photosynthetic function is lowered, the nutrient solution concentration is lowered to facilitate water absorption by the plant and prevent the plant from wilting.

前述の遮光カーテン２３の閉制御・開閉窓２１の開制御・加湿器２２の加湿制御を行うタイミングは、光合成機能の測定値が設定以下を検出した日の翌日が望ましい。図４のグラフで説明すると、測定した３日目に、光合成機能を示す数値が設定値Ｐを下回った場合（ハ）に、４日目に前述の設備の各装置の制御を行うようにする。というのも、本実施の形態の光合成測定装置は、設備内で管理作業を行うオペレータが居る昼間には走行せず、オペレータが設備内に居ない夜間に培地間を走行して植物の光合成を測定する。そのため、日射量や室温の高くなる翌日の昼間に各種制御を行うのが適切なためである。図４に示すように光合成機能が１日目から３日目まで連続して低下しているのは、天候が曇りや雨等で日射量が低下している場合が多い。そして、４日目に光合成機能を示す数値が設定値Ｐを超えたのは晴天になった場合が多い。 The timing for performing the above-mentioned closing control of the light-shielding curtain 23, opening control of the opening/closing window 21, and humidification control of the humidifier 22 is preferably the day after the measured value of the photosynthetic function is below the set value. Explaining with the graph of FIG. 4, if the numerical value indicating the photosynthetic function falls below the set value P on the third day measured (C), each device of the above-mentioned equipment is controlled on the fourth day. .. This is because the photosynthesis measurement device of the present embodiment does not run during the day when there is an operator who performs management work in the facility, and runs between the culture media during the night when the operator is not in the facility to perform photosynthesis of plants. taking measurement. Therefore, it is appropriate to perform various controls in the daytime on the next day when the amount of solar radiation and the room temperature increase. As shown in FIG. 4, the photosynthetic function continuously decreases from the first day to the third day in many cases because the amount of solar radiation decreases due to cloudy weather or rain. In many cases, the value indicating the photosynthetic function exceeded the set value P on the fourth day because of fine weather.

また、図４の４日目の光合成機能を示す数値（ニ）が設定値Ｐを超えると、翌日の前述の補正した設定基準値を初期に設定した設定基準値に戻す。 When the numerical value (d) indicating the photosynthesis function on the 4th day in FIG. 4 exceeds the set value P, the corrected set reference value on the next day is returned to the initially set set reference value.

次に、光合成機能を示す数値の高低により、養液の供給量を増減させる制御について説明する。 Next, the control for increasing or decreasing the supply amount of the nutrient solution according to the level of the numerical value indicating the photosynthetic function will be described.

光合成測定装置２４が光合成の状態、すなわち光合成機能が低下していると設定されている点Ｐ（例えば１．５Ｐ／Ｓ）を下回ることを測定すると、養液の供給量を増加させると共に、排液量を増加させる制御を行う。一方、光合成機能が高いと設定されている点Ｒ（例えば１．９Ｐ／Ｓ）を上回ると養液の供給量を減少させ、排液量を減少させる制御を行う。 When the photosynthesis measuring device 24 measures that the photosynthesis state is below the point P (for example, 1.5 P/S), which is set as the photosynthesis function being lowered, the supply amount of the nutrient solution is increased and Control is performed to increase the liquid volume. On the other hand, when the temperature exceeds a point R (for example, 1.9 P/S) set to have a high photosynthetic function, the supply amount of the nutrient solution is reduced and the drainage amount is controlled to be reduced.

この制御の理由について以下説明する。 The reason for this control will be described below.

植物には生殖生長と栄養生長の2パターンがある。植物に実をつけさせるためにはある程度植物にストレスをかける必要がある。そして、植物へのストレスが大きくなると、光合成機能が低下し、植物は果実を付ける方向（生殖生長）に傾くが萎れるリスクを伴う。 Plants have two patterns, reproductive growth and vegetative growth. In order for the plant to bear fruit, it is necessary to stress the plant to some extent. When the stress on the plant increases, the photosynthetic function decreases, and the plant leans toward the direction of fruit attachment (reproductive growth), but with the risk of withering.

逆に、光合成機能が高くなると、植物の茎は太くなり長くなろうとする方向（栄養成長）に傾く。しかし、その分、果実をつけようとしなくなるので生産者としてはマイナスである。 On the contrary, when the photosynthetic function increases, the stem of the plant becomes thicker and leans toward vegetative growth (vegetative growth). However, it is a minus for the producers because they will not try to grow the fruits.

そこで、生殖生長と栄養成長のバランスを光合成機能で判断する。つまり、光合成測定装置２４で光合成機能が低くなりすぎているときは、植物が萎れるリスクがあると判定し、樹や葉を大きくしてやるために養液を多く供給し、植物を栄養成長側に傾ける。逆に光合成機能が高くなりすぎるときは、植物に果実が付けなくなるリスクがあると判定して供給する養液量を少なくする。そして、供給する養液量を増加させると、その分、排液量を増加させ、供給する養液量を減少させると、その分、排液量を減少させることで、培地での養液量を一定にする。 Therefore, the photosynthetic function determines the balance between reproductive growth and vegetative growth. That is, when the photosynthetic function is too low in the photosynthesis measuring device 24, it is determined that the plant is at risk of wilting, a large amount of nutrient solution is supplied to enlarge the trees and leaves, and the plant is inclined to the vegetative growth side. .. On the contrary, when the photosynthetic function becomes too high, it is determined that there is a risk that the plant will not have fruits, and the amount of nutrient solution supplied is reduced. When the amount of nutrient solution to be supplied is increased, the amount of drainage is increased by that amount, and when the amount of nutrient solution to be supplied is decreased, the amount of drainage is reduced by that amount. To be constant.

この養液の供給量の制御を行う場合に、光合成機能の値に、さらに、日射計２６による日射量又は室温計２７の室温の値の情報を加えても良い。すなわち、日射量や室温に設定以上の変化がないにもかかわらず、光合成機能が低下したことを測定すると養液の供給量を増加させるようにしても良い。つまり、外的環境に変化が無いにもかかわらず、光合成機能が低下したのは養液の養分の低下と判定できるためである。 When controlling the supply amount of the nutrient solution, information on the solar radiation amount by the pyranometer 26 or the room temperature value of the room temperature meter 27 may be added to the value of the photosynthesis function. That is, it is possible to increase the supply amount of the nutrient solution when it is measured that the photosynthetic function is deteriorated, even though the amount of solar radiation or the room temperature does not change more than the set value. In other words, the reason why the photosynthetic function deteriorates despite the fact that the external environment does not change is that it can be determined that the nutrient content of the nutrient solution has decreased.

１５ 養液濃度管理センサ
２１ 開閉窓
２２ 加湿器
２３ 遮光カーテン
２４ 光合成測定装置
２５ 制御部
２６ 日射計
２７ 室温計
２８ 湿度計
Ｈ ハウス 15 nutrient solution concentration control sensor 21 opening/closing window 22 humidifier 23 light-shielding curtain 24 photosynthesis measuring device 25 control unit 26 pyranometer 27 room temperature meter 28 hygrometer H house

Claims (5)

太陽光を通過させる透明性部材で覆われたハウス内で養液にて作物を栽培する植物栽培設備において、
前記ハウスには、前記透明性部材を通過する太陽光を遮光する遮光カーテンと、日射量を計測する日射計と、植物の光合成の状態を測定する光合成測定装置を備え、日射計が設定する日射量以上を測定すると遮光カーテンが閉制御する構成とし、
光合成測定装置により測定される光合成の状態を示す値が設定値よりも小さいと、前記設定する日射量を低くする制御を行う制御部を備えることを特徴とする植物栽培設備。 In a plant cultivation facility for cultivating a crop with a nutrient solution in a house covered with a transparent member that allows sunlight to pass,
The house is provided with curtains for blocking sunlight passing through the transparent member, and solar radiation meter for measuring the amount of solar radiation, photosynthesis measuring device for measuring the state of plant photosynthesis, pyranometer is set insolation If you measure more than the amount, the light-shielding curtain will be closed.
A plant cultivating facility comprising a control unit for controlling the amount of solar radiation to be set when the value indicating the state of photosynthesis measured by the photosynthesis measuring device is smaller than a set value. 太陽光を通過させる透明性部材で覆われたハウス内で養液にて作物を栽培する植物栽培設備において、
前記ハウスには、ハウス内の温度を調節するための換気用の開閉窓と、ハウス内の室温を測定する室温計と、植物の光合成の状態を測定する光合成測定装置を備え、室温計が設定温度以上であることを測定すると、開閉窓が開制御する構成とし、
光合成測定装置により測定される光合成の状態を示す値が設定値よりも小さいと、前記設定する室温を低くする制御を行う制御部を備えることを特徴とする植物栽培設備。 In a plant cultivation facility for cultivating a crop with a nutrient solution in a house covered with a transparent member that allows sunlight to pass,
The house is provided with an opening/closing window for ventilation for adjusting the temperature in the house, a room temperature meter for measuring the room temperature in the house, and a photosynthesis measuring device for measuring the photosynthesis state of the plant, and the room temperature meter is set. When it is measured that the temperature is higher than the temperature, the opening and closing window is controlled to open.
A plant cultivating facility comprising a control unit for controlling the room temperature to be set low when a value indicating the photosynthesis state measured by the photosynthesis measuring device is smaller than a set value. 太陽光を通過させる透明性部材で覆われたハウス内で養液にて作物を栽培する植物栽培設備において、
前記ハウスには、養液の濃度を測定する養液濃度管理センサと、植物の光合成の状態を測定する光合成測定装置を備え、設定する濃度になるよう養液を管理制御する構成とし、
光合成測定装置により測定される光合成の状態を示す値が設定値よりも小さいと、前記設定する濃度を低くする制御を行う制御部を備えることを特徴とする植物栽培設備。 In a plant cultivation facility for cultivating a crop with a nutrient solution in a house covered with a transparent member that allows sunlight to pass,
The house is provided with a nutrient solution concentration management sensor for measuring the concentration of the nutrient solution, and a photosynthesis measuring device for measuring the photosynthetic state of the plant, and is configured to manage and control the nutrient solution to a set concentration,
A plant cultivating facility comprising a control unit that controls the concentration to be set low when the value indicating the photosynthesis state measured by the photosynthesis measuring device is smaller than a set value. ハウスには、植物に加湿を行う加湿器と、ハウス内の湿度を測定する湿度計と、湿度計が設定湿度以下を測定すると、加湿器を運転する構成とし、
光合成測定装置により測定される光合成の状態を示す値が設定値よりも小さいと、前記設定湿度を高く補正する制御部を備えることを特徴とする請求項１から請求項３いずれかに記載の植物栽培設備。 In the house, a humidifier for humidifying the plant, a hygrometer for measuring the humidity inside the house, and a configuration in which the humidifier is operated when the hygrometer measures a humidity below a set humidity,
The plant according to any one of claims 1 to 3, further comprising a control unit that corrects the set humidity to a high value when a value indicating a photosynthesis state measured by the photosynthesis measuring device is smaller than a set value. Cultivation equipment . 光合成の状態を示す値が設定値よりも小さいとは、前記制御部による制御を行う前日に測定した値が設定値より低いことであることを特徴とする請求項１から請求項４いずれかに記載の植物栽培設備。 The fact that the value indicating the state of photosynthesis is smaller than the set value means that the value measured on the day before the control by the control unit is lower than the set value. Plant cultivation equipment described.
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