JPH02273129A - Manuring control method in nutriculture - Google Patents

Manuring control method in nutriculture

Info

Publication number
JPH02273129A
JPH02273129A JP1094499A JP9449989A JPH02273129A JP H02273129 A JPH02273129 A JP H02273129A JP 1094499 A JP1094499 A JP 1094499A JP 9449989 A JP9449989 A JP 9449989A JP H02273129 A JPH02273129 A JP H02273129A
Authority
JP
Japan
Prior art keywords
amount
liquid
cultivation
nutrient solution
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1094499A
Other languages
Japanese (ja)
Inventor
Masahiro Nagahama
長浜 正廣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP1094499A priority Critical patent/JPH02273129A/en
Publication of JPH02273129A publication Critical patent/JPH02273129A/en
Pending legal-status Critical Current

Links

Classifications

    • Y02P60/216

Landscapes

  • Hydroponics (AREA)

Abstract

PURPOSE:To carry out manuring practice adapted to conditions of a plant body and root by controlling feed liquid amount and nurturing liquid concentration of nutriculture according to change of transpiration amount of culture crop and change of oxygen consumption amount. CONSTITUTION:Feed liquid amount necessary for plant culture or fertilizer concentration of nurturing liquid or the feed liquid amount and fertilizer concentration are controlled using a manuring control computer system provided with a barometer for detecting state of weather, weather display switch operated by receiving signals from the barometer, etc., according to the change of environmental conditions of light amount, rearing stage, dissolved oxygen amount, etc., by time or regardless of time and then the controlled nurturing liquid is fed to a culture bed.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は水耕栽培すなわち養液栽培の給液量と養液濃度
とを栽培作物の蒸散量の変化や酸素消費量の変化に追随
して調整制御する肥培管理の制御方法に関する。
[Detailed Description of the Invention] (Field of Industrial Application) The present invention tracks the amount of liquid supplied and the concentration of the nutrient solution in hydroponic cultivation, that is, hydroponic cultivation, in accordance with changes in the amount of transpiration and changes in the amount of oxygen consumed by cultivated crops. This invention relates to a control method for fertilizer management that adjusts and controls fertilizers.

(従来の技術) 水耕栽培では一般に、光が強くなると温度上昇に伴って
水温も上昇する。その際、根の呼吸は次第に盛んになり
、酸素の要求が強くなる。それ故に、晴天臼は、光合成
量と蒸散量が多くなり、逆に曇雨天日は、光合成量と蒸
散量が少なくなる。
(Prior Art) In hydroponic cultivation, in general, when the light becomes stronger, the water temperature also rises as the temperature rises. At this time, root respiration gradually increases and the demand for oxygen becomes stronger. Therefore, on a sunny day, the amount of photosynthesis and transpiration will increase, whereas on a cloudy and rainy day, the amount of photosynthesis and transpiration will decrease.

このような理由で、曇雨天日には、光合成の産物(a)
の根への供給は抑えられ、根における養水分の吸収は低
下し、地上部たる葉へ送る養水分の量は少くなる。この
結果、光合成がさらに抑えられる、という悪循環を繰り
返すことは周知の事実である。
For this reason, on cloudy and rainy days, the products of photosynthesis (a)
The supply of nutrients to the roots is suppressed, the absorption of nutrients by the roots is reduced, and the amount of nutrients sent to the leaves, which are the aboveground parts, is reduced. It is a well-known fact that as a result, photosynthesis is further suppressed, and a vicious cycle repeats.

光合成においては1葉で糖を合成し、その糖は根に下り
てエネルギー源として利用され、発根発育を促す、生長
点部では、植物ホルモンのオーキシンの合成が促進され
、オーキシンは、糖の効果と同様の発根発育を促してい
る。
During photosynthesis, sugar is synthesized in one leaf, and the sugar descends to the roots and is used as an energy source, promoting rooting and development.At the growing point, the synthesis of the plant hormone auxin is promoted; It promotes rooting and development similar to the effect.

このようにして、根の活動、活性化は、葉からの光合成
産物の供給と、生長点部のホルモンの供給とにより支え
られている。
In this way, root activity and activation are supported by the supply of photosynthetic products from the leaves and the supply of hormones from the growing point.

ところが1以上述べたように、光合成作用は天候の変化
に左右されるにもかかわらず、従来の養液栽培作物の肥
培管理は、晴天口と曇天・雨天臼ともに同様の制御シス
テムで行なわれている。
However, as mentioned above, although photosynthesis is affected by changes in weather, conventional fertilizer management for hydroponic crops is carried out using the same control system for both sunny weather and cloudy/rainy weather. There is.

この従来の制御システムは1日射量が作物の葉面の蒸散
量に等しいとの仮説に立脚して給液量を変化させる制御
を行なうものである。
This conventional control system performs control to change the amount of liquid supplied based on the hypothesis that the amount of solar radiation per day is equal to the amount of transpiration from the leaf surface of the crop.

また、この制御システムは、近年発達した複合制御の給
液管理と併用することにより、植物の恒常性維持を重点
においた肥培管理に使用されている。
In addition, this control system is used in fertilizer management with an emphasis on maintaining plant homeostasis by using it in conjunction with the recently developed complex control liquid supply management.

(発明が解決しようとする課題) しかし、現実には、上述したように、晴天口は光合成量
、蒸散量が多く、暴雨天日はそれらが少いという事実が
あり、また暴雨天日後の晴天口は光合成量が著しく少く
、植物体は弱っており根からの養水分吸収は低下してい
る。また根は更新しているが絶えず健全な状態にあると
は限らず、その状況状態に合わせた肥培管理が必要とな
る。この場合1日射量が蒸散量に等しいとする仮説に立
脚した上記制御システムにより制御すると、根の状態と
は矛盾した管理となり、問題がある。
(Problem to be solved by the invention) However, in reality, as mentioned above, there is a fact that the amount of photosynthesis and transpiration is high in clear weather conditions, but less on days with heavy rain; The amount of photosynthesis in the mouth is extremely low, the plant body is weak, and the absorption of nutrients and water from the roots is reduced. Also, although the roots are renewing, they are not always in a healthy state, and fertilization management needs to be tailored to the situation. In this case, if control is performed using the above-mentioned control system based on the hypothesis that the amount of solar radiation per day is equal to the amount of transpiration, the management will be inconsistent with the state of the roots, resulting in a problem.

本発明者は、この問題について、実験と研究を繰り返し
て行ったところ、根の溶存酸素の消費量と光の関係は、
第2図に示すように、暴雨天日の恒照度下栽培における
酸素消費量は1時刻によって殆ど変化がみられないが(
同図B)、晴天口の高照度上栽培における酸素消費量は
、時刻によって変化がみられ(同図A)、光の消長の曲
線(同図A鎖線)に類似した曲線を描いて酸素の消費量
が増減もするというものであり、その際、根の活性化が
みられることが判った。
The inventor conducted repeated experiments and research on this problem, and found that the relationship between the amount of dissolved oxygen consumed by roots and light is as follows.
As shown in Figure 2, the amount of oxygen consumed during cultivation under constant light on a rainy day shows almost no change depending on the time of day (
The amount of oxygen consumed during cultivation under high illuminance under clear weather conditions changes depending on the time of day (A in the same figure), and a curve similar to the curve of light ebb and flow (dashed line in A in the same figure) is drawn. The consumption amount also increased and decreased, and it was found that the roots were activated at that time.

また、暴雨天日の恒照度下栽培においても、低濃度養液
を使用すれば、酸素消費量が曲線を描くようになる(同
図C)ことを認めた。
In addition, even in cultivation under constant light on a rainy day, it was observed that if a low concentration nutrient solution was used, the oxygen consumption would follow a curve (C in the same figure).

そこで、本発明は、上記実験と研究から得られた新知見
に基づいて、上記従来技術の問題を解決するために創案
されたもので、天候条件や植物の生理状態などが影響し
ている実際の栽培に即応した適確な肥培管理を行うこと
ができる新規な養液栽培における肥培管理方法を提供す
ることを目的とする。
Therefore, the present invention was devised to solve the problems of the above-mentioned conventional technology based on new findings obtained from the above-mentioned experiments and research. The purpose of the present invention is to provide a novel fertilizer management method in hydroponic cultivation that can perform appropriate fertilizer management that is immediately responsive to the cultivation of plants.

(課題を解決するための手段) 上記目的を達成するために1本発明は、第1に、養液栽
培植物の肥培管理であって、植物の栽培に必要な養液の
給液量を1時刻によりまたは時刻に係わりなく光合成に
必要な光線量及び根の呼吸で消費する溶存酸素量などの
消長に応じ調整して栽培ベットに供給することを特徴と
し、第2に、養液栽培植物の肥培管理であって、植物の
栽培に必要な養液の肥料濃度を1時刻によりまたは時刻
に係わりなく、光線量、生育段階、溶存酸素量などの環
境条件の変化に応じて調整してその養液を栽培ベットに
供給することを特徴とし、第3に、養液栽培植物の肥培
管理であって、植物の栽培に必要な養液の給液量と肥料
濃度とを1時刻によりまたは時刻に係わりなく、光線量
、生育段階、溶存酸素量などの環境条件の変化に応じて
調整し、その養液を栽培ベットに供給することを特徴と
する。
(Means for Solving the Problems) In order to achieve the above object, the present invention firstly provides fertilizer management for hydroponic plants, in which the amount of nutrient solution necessary for cultivating plants is reduced by 1. The method is characterized in that the amount of light necessary for photosynthesis and the amount of dissolved oxygen consumed by root respiration are adjusted and supplied to the cultivation bed depending on the time of day or regardless of the time of day. Fertilization management is the process of adjusting the concentration of fertilizer in the nutrient solution required for plant cultivation at any given time or at any time, depending on changes in environmental conditions such as the amount of light, the growth stage, and the amount of dissolved oxygen. The third aspect is the fertilization management of hydroponic plants, in which the amount of nutrient solution and the concentration of nutrient solution necessary for cultivating plants are controlled at one time or at different times. Regardless, the nutrient solution is adjusted according to changes in environmental conditions such as the amount of light, growth stage, amount of dissolved oxygen, etc., and the nutrient solution is supplied to the cultivation bed.

(作用) 第1の構成手段によれば、暴雨天日のごとく光合成、蒸
散量が少いときには、時刻の如何を問わず、一定量の給
液量を供給することができ、また、晴天口のごとく光合
成量、蒸散量が多いときには、時刻によって、給液量を
変えて供給することができる。
(Function) According to the first configuration means, when the amount of photosynthesis and transpiration is small, such as on a rainy day, a constant amount of liquid can be supplied regardless of the time of day, and the clear weather port When the amount of photosynthesis and transpiration are large, as in the example above, the amount of liquid supplied can be changed depending on the time of day.

第2の構成手段によれば、暴雨天日又はその翌日の晴天
口のごとく、根の活動、活性化の緩慢なときには、時刻
の如何を問わず、一定の低濃度に養液を調整して供給し
、また、晴天口のごとく、根の活動、活性化の旺盛なと
きには、時刻によって濃度を変えた養液を調整して供給
し、さらにまた、上述のように根の活動、活性化の緩慢
なときに時刻によって低濃度で濃度の変った養液を調整
して供給することができる。
According to the second configuration means, when root activity and activation are slow, such as on a rainy day or on a sunny day the next day, the nutrient solution is adjusted to a constant low concentration regardless of the time of day. In addition, when root activity and activation are active, such as during sunny days, a nutrient solution with varying concentrations depending on the time of day is adjusted and supplied, and as mentioned above, root activity and activation are increased. When it is slow, it is possible to adjust and supply a nutrient solution with a low concentration that changes depending on the time of day.

第3の構成手段によれば、養液の給液量と、養液濃度を
組み合わせ、天候の状態、植物の状態が反映する実際の
栽培に即応してその養液を調整供給し、理想の肥培管理
を行うことができる。
According to the third configuration means, the amount of the nutrient solution supplied and the concentration of the nutrient solution are combined, and the nutrient solution is adjusted and supplied immediately in response to actual cultivation that reflects weather conditions and plant conditions, thereby achieving the ideal solution. Fertilization management can be performed.

(実施例) 以下、本発明の好適一実施例を図面を参照しながら詳述
する。
(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

第1図は、本発明の養液栽培における肥培制御方法を実
施するための方法の概要を示すブロック図である。
FIG. 1 is a block diagram illustrating an overview of a method for implementing the method for controlling fertilization in hydroponic cultivation of the present invention.

図示するように、この実施例の肥培制御システムlは、
天候の状態を検出する気圧計2.この気圧計2からの信
号を受けて作動する天候表示スイッチ3、この天候表示
スイッチ3からの信号により養液の給液量及び濃度を判
断して指令を発するコンピュータ4、このコンピュータ
4がらの給液信号により稼動するポンプ5、このポンプ
5に接続されて給液を導入し、かつ上記コンピュータ4
へ給液の濃度信号を送る手段6を備える給液タンク7、
給液タンク7に電磁弁8を備えるパイプ9で接続される
肥料タンク10、並びに原水を導入するため接続される
パイプ11、上記ポンプ5によって給液を送給される栽
培ベラ)12、この栽培ベット12からの排液を流量計
13を備えるパイプ14を介して回収する液面センサ1
5付養液回収タンク16により構成されている。
As shown in the figure, the cultivation control system l of this embodiment is as follows:
Barometer to detect weather conditions 2. A weather display switch 3 that operates in response to a signal from the barometer 2, a computer 4 that determines the amount and concentration of nutrient solution to be supplied based on the signal from the weather display switch 3, and issues instructions; A pump 5 operated by a liquid signal, connected to this pump 5 to introduce liquid supply, and the computer 4
a supply liquid tank 7 comprising means 6 for sending a concentration signal of the supply liquid to;
A fertilizer tank 10 connected to the liquid supply tank 7 by a pipe 9 equipped with a solenoid valve 8, a pipe 11 connected to introduce raw water, a cultivation bellow (12) to which the liquid is supplied by the pump 5, and this cultivation A liquid level sensor 1 that collects drained liquid from the bed 12 via a pipe 14 equipped with a flow meter 13
5 and a nutrient solution recovery tank 16.

この実施例では、コンピュータ4がポンプ5に指令する
給液量として、快晴・晴天100%、曇天50%、雨天
・雪天30%の場合が設定されており、その際、上記流
量計13又は液面センサ15により検出される排液量(
回収量/給液量×100)が、20%以上、20〜5%
、5%以下の場合の各調整法は2下記のようにしている
In this embodiment, the amount of liquid supplied by the computer 4 to the pump 5 is set for 100% clear skies, 50% cloudy skies, and 30% rainy/snowy skies. The amount of drained liquid detected by the liquid level sensor 15 (
Recovery amount/liquid supply amount x 100) is 20% or more, 20-5%
, each adjustment method in the case of 5% or less is as follows.

即ち。That is.

■排液量20%以上の時には、 快晴・晴天100%の給液量を曇天50%の給液量に、
または快晴・晴天100%の給液量を雨天e雪天30%
の給給量に、それぞれ変更して給液するよう調整し、 ■排液量20%〜5%の時には、 快晴・晴天100%の給液量 曇天50%の供給量 雨天・雪天30%の給液量 をいずれもそのままの状態に維持して給液し、さらに、 05%以下の時には。
■When the liquid discharge volume is 20% or more, the liquid supply amount for 100% on clear and sunny days is changed to the liquid supply amount for 50% on cloudy days.
Or 100% liquid supply amount on clear and sunny days, 30% on rainy or snowy days.
Adjust the liquid supply amount by changing the amount of liquid supplied, respectively. ■When the drain amount is 20% to 5%, the amount of liquid supplied on clear and sunny days is 100%. The amount of liquid supplied on cloudy days is 50%. The amount of liquid supplied on rainy and snowy days is 30%. Supply liquid while maintaining the same amount of liquid, and when it is less than 0.5%.

非常時として、給液時間に関係なく、上述■と同様その
まま維持して給液する。これが養液の給液量の調整法で
ある。
In case of an emergency, regardless of the liquid supply time, continue to supply liquid in the same way as in (2) above. This is the method for adjusting the amount of nutrient solution supplied.

他方、養液の濃度の調整手段としては、PHセンサ17
とECセンサ18とが給液タンク7内に備えられて、こ
れらが給液の濃度の程度をコンピュータ4に伝達し、そ
の適否を判断したコンピュータ4が、原水のポンプ19
の回転速度又は肥料パイプ9の電磁弁8の絞りを調整す
るようになっている。
On the other hand, as a means for adjusting the concentration of the nutrient solution, a PH sensor 17 is used.
and an EC sensor 18 are provided in the liquid supply tank 7, and these transmit the level of the concentration of the supplied liquid to the computer 4, and the computer 4, which judges the suitability of the concentration level, sends the raw water pump 19.
The rotation speed of the fertilizer pipe 9 or the throttle of the solenoid valve 8 of the fertilizer pipe 9 is adjusted.

ECセンサ18は、塩類全体の濃度を検出し、個々の成
分の濃度の検出はpHセンサ17が行う。
The EC sensor 18 detects the concentration of the salts as a whole, and the pH sensor 17 detects the concentration of each individual component.

この実施例では、EC設定の自動変動を下記のように行
っている。
In this embodiment, automatic variation of EC settings is performed as follows.

即ち、コンピュータ4がポンプ5に、快晴争晴天時の給
液量100%を指令しているときには。
That is, when the computer 4 instructs the pump 5 to supply 100% of the liquid in a clear day.

EC設定の自動変動は±O1曇天時の給液量50%を指
令しているときは、EC設定の自動変動は±0.1、雨
天雪天時の給液量30%を指令しているときは、そのE
C設定の自動変動は±0.2である。この場合の+は冬
期時、−は夏期時である。
Automatic variation of EC setting is ±0.1 When commanding 50% fluid supply amount on cloudy days, automatic fluctuation of EC setting is ±0.1, commanding 30% fluid supply amount on rainy or snowy days. At that time, that E
The automatic variation of C settings is ±0.2. In this case, + means winter time and - means summer time.

次に、上述のように構成された実施例の作用を説明する
Next, the operation of the embodiment configured as described above will be explained.

今、栽培ベットで養液栽培している植物のある日の天候
が快晴・晴天である場合には、それが気圧計2で自動的
に検出され、その検出信号で快晴・晴天スイッチ3aが
オンとなってコンピュータ4にその旨入力される。その
旨の入力信号を得たコンピュータ4は快晴・晴天100
%の給液量を栽培ベラ)12に供給するようポンプ5に
指令し、その指令に基いて稼動するポンプ5は供給タン
ク7から給液を上記栽培へット12に供給する。
If the weather is clear and sunny on a certain day for the plants that are being hydroponically cultivated in the cultivation bed, this will be automatically detected by the barometer 2, and the detection signal will turn on the clear and sunny switch 3a. This is input to the computer 4. The computer 4 that received the input signal to that effect has a clear sky/clear sky of 100.
The pump 5 is instructed to supply a liquid amount of % to the cultivation bellow 12, and the pump 5, which operates based on the command, supplies the liquid from the supply tank 7 to the cultivation bellow 12.

その栽培ベット12内で生育する植物は、根から取り入
れた給液の水と葉から取り入れた炭酸ガスとにより、光
を利用して糖を合成する光合成(炭酸同化)作用を行う
、この光合成作用が旺盛であればある程、水が根から多
く取り入れられ、気口から蒸散する量も多くなる。その
際、栽培へット12から養液回収タンク16に回収され
る排液量は20〜5%であり、上記栽培ベラ)12に供
給される給液量はそのままの状態で維持され供給される
The plants growing in the cultivation bed 12 perform photosynthesis (carbon assimilation), which uses light to synthesize sugar using water taken in from the roots and carbon dioxide taken in from the leaves. The more active the water, the more water will be taken in through the roots and the more water will evaporate from the air vents. At this time, the amount of waste liquid collected from the cultivation het 12 into the nutrient solution recovery tank 16 is 20 to 5%, and the amount of liquid supplied to the cultivation bellow 12 is maintained and supplied as it is. Ru.

光合成は昼間行われ、光が強くなると益々旺盛になり、
温度も水温も上昇し、次第に根の呼吸も盛んになり酸素
消費量も多くなる。
Photosynthesis takes place during the day, and becomes more active as the light gets stronger.
As the temperature and water temperature rise, root respiration gradually increases and oxygen consumption increases.

この間(高照度下)の根の溶存酸素消費量と光との関係
は、第2図(A)に示す通りで、光の消長の曲線(鎖線
)と似た曲線で酸素消費量が増減しており、根の活性化
がみちれる。
The relationship between dissolved oxygen consumption by roots and light during this period (under high illuminance) is as shown in Figure 2 (A), where the oxygen consumption increases and decreases in a curve similar to the curve of light decay (dashed line). The roots are revitalized.

一方、快晴・晴天の場合に、光の強さが頂点に達する以
前、又は達して以後の弱い時点では光合酸量蒸散量も少
なく、従って、栽培ベラ)12に供給された給液の養液
回収タンク16への排液量も20%以上となる。その際
には、流量計13又は液面センサ15が作用してコンピ
ュータ4にその旨を伝え、コンピュータ4は給液量を曇
天時に相当する50%又は雨天雪天時相当の30%に変
更指令し、給液量を少な目に調整する。
On the other hand, in the case of clear skies and clear skies, the amount of photosynthetic acid and transpiration is low before the light intensity reaches its peak or at a weak point after it reaches its peak, and therefore the nutrient solution supplied to the cultivation vera) 12 is The amount of liquid drained into the recovery tank 16 is also 20% or more. In this case, the flow meter 13 or liquid level sensor 15 acts to notify the computer 4 of this, and the computer 4 instructs the computer 4 to change the liquid supply amount to 50%, which corresponds to cloudy days, or 30%, which corresponds to rainy or snowy days. Then, adjust the amount of liquid supplied to a smaller amount.

また、ある日の天候が初めから曇天又は雨天・雪天の場
合には、気圧計2がそれを検出して、相当の曇天スイッ
チ3b又は雨天雪天スイッチ3cをオンとし、これをコ
ンピュータ4に入力し、コンピュータ4は相当する曇天
の給液量50%又は雨天・雪天の給液量30%を供給す
るようポンプ5に指令し、それに応じてポンプ5は相当
の給液を栽培ベラ)12に供給する。
In addition, if the weather on a certain day is cloudy, rainy, or snowy from the beginning, the barometer 2 detects this and turns on the corresponding cloudy weather switch 3b or rainy/snowy weather switch 3c, which is transmitted to the computer 4. The computer 4 instructs the pump 5 to supply 50% of the corresponding liquid supply amount on cloudy days or 30% of the liquid supply amount on rainy/snowy days, and the pump 5 accordingly supplies the corresponding liquid supply amount to the cultivation bella). Supply to 12.

その際、栽培ペット12から養液回収タンク16への排
液量が20%〜5%の時に該当するので終始そのままの
状態で給液を続ける。
At this time, since the amount of liquid drained from the cultivated pet 12 to the nutrient solution recovery tank 16 is 20% to 5%, the liquid supply is continued in that state from beginning to end.

なお、いずれの給液量を供給する場合も、排液量が5%
以下の時には、非常時として給液時間に関係なくそのま
まの状態を維持して給液を続けることになる。
In addition, when supplying any amount of liquid, the amount of drained liquid is 5%.
In the following cases, as an emergency, the current state will be maintained and liquid supply will continue regardless of the liquid supply time.

上述のように、暴雨天日の恒照度下栽培で、給液量を変
更しないのは、光合成度量、蒸散量が少く、第2図(B
)に示すように酸素消費量の変化が殆どみられない、そ
の理由は養液回収タンク16に回収される排液量が20
%以上となることがないからである。換言すれば、根は
、恒照度下栽培では、高照度下栽培のように活性的に活
動しない。
As mentioned above, when cultivating under constant light on a rainy day, the amount of water supplied is not changed because the amount of photosynthesis and the amount of transpiration are small, as shown in Figure 2 (B).
), there is almost no change in the amount of oxygen consumed.The reason is that the amount of waste water collected in the nutrient solution recovery tank 16 is
% or more. In other words, roots are not as active under constant light cultivation as they are under high light cultivation.

ただ、恒照度下においても、第2図(C)に見るように
低濃度養液であるときには、酸素消費量の曲線が出現す
る。
However, even under constant illuminance, a curve of oxygen consumption appears when the nutrient solution is at a low concentration, as shown in Figure 2 (C).

この濃度の制御調整は、ECセンサ18とpHセンサ1
7とが、全体の塩類濃度と個別的な濃度を検出すること
で、相い補ってバランスのとれた濃度調整が行われる。
This concentration control adjustment is performed by the EC sensor 18 and the pH sensor 1.
7 detects the overall salt concentration and individual concentrations, thereby performing complementary and balanced concentration adjustment.

即ち、給液について時刻によりまたは時刻の如何を問わ
ず、温度、光線量などの外的条件と植物の種類、生理状
態、生育段階などの内的条件に即応して、給液に含まれ
る塩類全体の濃度をECセンサが検出し、生理的酸性肥
料の過不足をpHセンサが検出する。
In other words, depending on the time of day or at any time, the salts contained in the supplied liquid will be adjusted depending on the external conditions such as temperature and light dose, and the internal conditions such as the type of plant, physiological state, and growth stage. An EC sensor detects the overall concentration, and a pH sensor detects excess or deficiency of physiologically acidic fertilizer.

上記実施例によれば、植物の生育因子に密着した実際の
栽培の肥培管理が自動的に行われる。
According to the above embodiment, fertilizer management for actual cultivation is automatically performed in close contact with plant growth factors.

(発明の効果) 以上、要するに、本発明によれば、植物の生育を支配す
る温度、光線量等の外的条件及び1.植物体の生育段階
、生理状況等の内的条件の双方の条件に即応して、養液
の供給量、濃度を時刻により、または時刻の如何を問わ
ず調整する肥培制御方法としたので、植物体及び根の状
態に即応した肥培管理ができ、従来の机上での仮説に立
脚した肥培制御と異なり、外的、内的条件に密着した実
際の栽培の肥培管理制御が確立されるに至ったのである
。そのため、健全な植物が生育できるという効果を奏す
る。
(Effects of the Invention) In summary, according to the present invention, external conditions such as temperature and light dose that govern plant growth and 1. This fertilizer control method adjusts the supply amount and concentration of nutrient solution depending on the time of day or at any time in response to both the growth stage of the plant and its internal conditions such as physiological status. Fertilization management can be carried out in response to the condition of the plant's body and roots, and unlike conventional fertilizer control based on theoretical hypotheses, fertilizer management control for actual cultivation has been established that is closely related to external and internal conditions. It is. Therefore, the effect is that healthy plants can grow.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の養液栽培における肥培制御方法を実施
するシステムの概要を示すブロック図、第2図は同上養
液栽培における植物の根の呼吸作用を天候別に対比する
図表である。 l・・・肥培管理システム、2・・・気圧計、3・・・
天候表示システム。 6・・・濃度信号を送る手段27・・・給液タンク、8
・・・電磁弁、9・・・肥料パイプ、10・・・肥料タ
ンク、12・・・栽培ベット、13・・・流量計215
・・・液面センサ、16・・・回収タンク、17・・・
pHセンサ、18・・・ECセンサ、
FIG. 1 is a block diagram showing an overview of a system for carrying out the method for controlling fertilization in hydroponic cultivation of the present invention, and FIG. 2 is a chart comparing the respiration of roots of plants in hydroponic cultivation according to weather conditions. l... Fertilization management system, 2... Barometer, 3...
Weather display system. 6... Means for sending a concentration signal 27... Liquid supply tank, 8
...Solenoid valve, 9...Fertilizer pipe, 10...Fertilizer tank, 12...Cultivation bed, 13...Flow meter 215
...Liquid level sensor, 16...Recovery tank, 17...
pH sensor, 18...EC sensor,

Claims (3)

【特許請求の範囲】[Claims] (1)養液栽培植物の肥培管理であって、植物の栽培に
必要な養液の給液量を、時刻によりまたは時刻に係わり
なく光合成に必要な光線量及び根の呼吸で消費する溶存
酸素量などの消長に応じ調整し、栽培ベットに供給する
ことを特徴とする養液栽培における肥培制御方法。
(1) Fertilization management for hydroponic plants, in which the amount of nutrient solution necessary for plant cultivation is adjusted depending on the time of day or regardless of the time of day, and the amount of light necessary for photosynthesis and the dissolved oxygen consumed by root respiration. A method for controlling fertilizer in hydroponic cultivation, which is characterized by adjusting the amount according to the growth and development and supplying it to a cultivation bed.
(2)養液栽培植物の肥培管理であって、植物の栽培に
必要な養液の肥料濃度を、時刻によりまたは時刻に係わ
りなく、光線量生育段階、溶存酸素量などの環境条件の
変化に応じて調整し、その養液を栽培ベットに供給する
ことを特徴とする養液栽培における肥培制御方法。
(2) Fertilization management for hydroponic plants, in which the concentration of fertilizer in the nutrient solution required for plant cultivation is adjusted depending on or regardless of the time of day, depending on changes in environmental conditions such as light dose, growth stage, amount of dissolved oxygen, etc. A method for controlling fertilizers in hydroponic cultivation, characterized by adjusting the nutrient solution accordingly and supplying the nutrient solution to a cultivation bed.
(3)養液栽培植物の肥培管理であって、植物の栽培に
必要な養液の給液量と肥料濃度とを、時刻によりまたは
時刻に係わりなく、光線量、生育段階、溶存酸素量など
の環境条件の変化に応じて調整し、その養液を栽培ベッ
トに供給することを特徴とする養液栽培における肥培制
御方法。
(3) Fertilization management of hydroponic plants, which includes controlling the amount of nutrient solution and fertilizer concentration necessary for plant cultivation, depending on or regardless of the time of day, the amount of light, the growth stage, the amount of dissolved oxygen, etc. A fertilizer control method in hydroponic cultivation, characterized by adjusting the nutrient solution according to changes in environmental conditions and supplying the nutrient solution to a cultivation bed.
JP1094499A 1989-04-14 1989-04-14 Manuring control method in nutriculture Pending JPH02273129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1094499A JPH02273129A (en) 1989-04-14 1989-04-14 Manuring control method in nutriculture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1094499A JPH02273129A (en) 1989-04-14 1989-04-14 Manuring control method in nutriculture

Publications (1)

Publication Number Publication Date
JPH02273129A true JPH02273129A (en) 1990-11-07

Family

ID=14112004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1094499A Pending JPH02273129A (en) 1989-04-14 1989-04-14 Manuring control method in nutriculture

Country Status (1)

Country Link
JP (1) JPH02273129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016010375A (en) * 2014-06-30 2016-01-21 井関農機株式会社 Nutritious liquid feeder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6336720A (en) * 1986-07-31 1988-02-17 株式会社誠和 Method and apparatus for supplying hydroponic liquid in hydroponic culture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6336720A (en) * 1986-07-31 1988-02-17 株式会社誠和 Method and apparatus for supplying hydroponic liquid in hydroponic culture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016010375A (en) * 2014-06-30 2016-01-21 井関農機株式会社 Nutritious liquid feeder

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