JP6651191B1 - Cultivation support system, controller and control method - Google Patents

Abstract

An object of the present invention is to support the cultivation of agricultural products by taking into account at least the temperature. An irrigation control controller that controls an irrigation mechanism according to cultivation guideline information that is determined so that the frequency of irrigation increases with an increase in temperature. When the temperature in the temperature zone is measured by the climate sensor 10, the first watering is executed by the watering mechanism 20A, and watering is performed until the next watering timing for each of the plurality of temperature zones obtained by dividing the appropriate temperature zone. The interval is set in accordance with the cultivation guideline information, the elapsed time of each temperature zone is measured by a timer while referring to the temperature measured by the climate sensor 10, and watering is performed on the watering mechanism 20A according to the earliest timing of watering. At the same time, the process of resetting the timer is repeatedly executed until sunset. [Selection diagram] Fig. 1

Description

  The present invention relates to a cultivation support system, a controller, and a control method.

  Producers of agricultural products such as vegetables, fruits and cereals cultivate agricultural products according to the cultivation guidelines provided by research institutes such as Agricultural Experiment Stations and Agricultural Technology Centers so that large quantities of high quality products can be harvested. It is common to do. The cultivation guidelines refer to the so-called "intuition when cultivating agricultural products" such as irrigation and fertilization timing so that a large amount of high-quality products can be harvested. Documented at each time. In addition, various techniques for supporting the cultivation of agricultural products have been proposed, and an example of the technique is disclosed in Patent Document 1. Patent Literature 1 discloses that the amount of nutrient solution required for plant cultivation is adjusted according to time or irrespective of time in accordance with the amount of light required for photosynthesis and the amount of dissolved oxygen consumed in respiration of roots. There is disclosed a fertilizing management technique for a hydroponically grown plant to be supplied to a cultivation bed.

JP-A-2-273129

  However, even when cultivating agricultural products according to the cultivation guidelines, root rot occurs, wilting occurs, or the disease dies, etc. In some cases, it could not be obtained. Producers of agricultural products try to cope by shifting the timing of irrigation and fertilization specified in the cultivation guideline by trial and error, but may worsen the situation. The cause of root rot, wilting, and disease is considered to be the lack of irrigation and fertilization adapted to the weather and temperature, which change daily.

  The present invention has been made in view of the above circumstances, and uses the amount of heat energy given to the leaves of an agricultural product to be cultivated via temperature or solar radiation as temperature data, and considers at least the temperature data to support cultivation of agricultural products. It is an object of the present invention to provide a technology that enables the user to perform the task.

In order to solve the above problems, the present invention is a climate sensor that measures at least the amount of thermal energy given to the leaves of the agricultural product to be cultivated via temperature or insolation as temperature data, and using water supplied from a water source. An irrigation mechanism for performing irrigation on a culture medium, and cultivation guideline information that defines the frequency of irrigation to be performed between sunrise and sunset according to the season according to the type of the agricultural product and the area where the culture medium is provided. A first controller that controls the watering mechanism such that watering is performed a plurality of times from sunrise to sunset according to cultivation guideline information in which the frequency of watering is higher as the temperature is higher, After the sunrise time in the area, the first controller stores temperature data representing a temperature within a predetermined appropriate temperature zone for growing agricultural products in the climate section. A first step of executing the first irrigation when measured by a difference in the watering mechanism, a the second and subsequent watering step to be executed by the watering mechanism, obtained by dividing the proper temperature zone is set for each of a plurality of temperature zones irrigation interval is the time interval between the end of irrigation to the start of the next watering per temperature zone in accordance with the cultivation indicator information, by the weather sensor elapsed time of each temperature zone Measured by a timer with reference to the temperature represented by the measured temperature data, irrigation timing that arrived earliest among a plurality of irrigation timings determined according to each irrigation interval set for each of the plurality of temperature zones And executing a second step of repeating the process of resetting the timer until sunset, while causing the irrigation mechanism to execute irrigation in response to To provide a cultivation support system. According to the present invention, the amount of thermal energy given to the leaves of the agricultural product to be cultivated is temperature data, and the frequency of irrigation for the agricultural product can be adjusted according to the temperature represented by the temperature data. In addition, cultivation support for agricultural products can be provided.

  In a more preferred aspect, the watering mechanism includes a liquid fertilizer mixing device that mixes liquid fertilizer into water supplied from the water source. According to this aspect, it becomes possible to adjust the frequency of irrigation for the agricultural product to be cultivated in accordance with the temperature, and to perform fertilization on the agricultural product simultaneously with irrigation.

  In a further preferred aspect, it has a second controller that adjusts the amount of liquid fertilizer mixed by the liquid fertilizer mixing unit with respect to unit volume of water according to the temperature represented by the temperature data measured by the climate sensor. Features. According to this aspect, it is possible to adjust the frequency of irrigation for the agricultural product to be grown according to the temperature, and to adjust the amount of liquid fertilizer mixed into the unit volume of water, that is, the fertilizer concentration according to the temperature. Fertilization can be performed.

  In another more preferred aspect, the apparatus further includes a second controller that adjusts the amount of liquid fertilizer mixed by the liquid fertilizer mixing unit with respect to a unit volume of water according to a time zone to which the irrigation timing belongs. According to this aspect, it becomes possible to adjust the frequency of irrigation for the agricultural product to be cultivated in accordance with the temperature, and to perform fertilization while adjusting the fertilizer concentration in accordance with the time zone in which the irrigation is performed. .

  In a more preferable aspect, a rain sensor is included, and the first controller adjusts the amount of irrigation per time according to the measurement result by the rain sensor. According to this aspect, it becomes possible to adjust the frequency of irrigation for the agricultural product to be cultivated in accordance with the temperature, and to adjust the amount of irrigation per time in accordance with the measurement result of the rain sensor. . For example, when the present invention is applied to cultivation support of house-grown agricultural products, a rain sensor may be used as the rain sensor, and the amount of irrigation per operation may be adjusted according to the presence or absence of rain. Further, when it is necessary to consider rainfall, such as when applying the present invention to cultivation support of agricultural products of open-field cultivation, a rainfall sensor is used as the rain sensor, and the amount of irrigation per time is determined according to the rainfall. Adjust it.

  In a more preferred aspect, the first controller estimates a growth stage of the agricultural product from an integrated value of the temperature represented by the temperature data measured by the climate sensor, and determines a frequency of irrigation according to the estimated growth stage. Adjusting. According to this aspect, it is possible to adjust the frequency of irrigation for the agricultural product to be grown according to the temperature and the growth stage of the agricultural product.

Further, in order to solve the above problems, the present invention provides a watering mechanism for watering a medium using water supplied from a water source, from sunrise to sunset depending on the type of agricultural product and the area where the medium is provided. It is cultivation guideline information that specifies the frequency of irrigation to be performed in accordance with the season, and the higher the temperature, the higher the frequency of irrigation . A controller for controlling irrigation, a climate sensor that measures at least the amount of heat energy given to the leaves of the produce via air temperature or solar radiation as temperature data after the time of sunrise in the area, by a climate sensor. At the point in time when temperature data representing the temperature within the appropriate temperature zone predetermined for breeding is measured, a first watering operation is performed by the watering mechanism. Step and, the second and subsequent watering a step to be executed by the watering mechanism, time interval from said respective ends of irrigation for the proper temperature zone more temperature zones obtained by dividing the start of the next irrigation set for each temperature zone in accordance with the cultivation indicator information irrigation interval is, measured by the timer with reference to the temperature of the elapsed time represented by the temperature data measured by the weather sensor for each temperature zone, wherein the plurality of temperature Of the plurality of irrigation timings determined according to each irrigation interval set for each of the belts, the irrigation mechanism performs irrigation according to the earliest irrigation timing, and a process of resetting the timer. Performing a second step that repeats until sunset. According to the present invention, the frequency of irrigation for the agricultural product to be grown can be adjusted according to the temperature.

Further, in order to solve the above problems, the present invention provides a watering mechanism for watering a medium using water supplied from a water source, from sunrise to sunset depending on the type of agricultural product and the area where the medium is provided. It is cultivation guideline information that specifies the frequency of irrigation to be performed in accordance with the season, and the higher the temperature, the higher the frequency of irrigation . A control method for controlling irrigation to be performed, by a climate sensor that measures at least the amount of heat energy given to the leaves of the produce via air temperature or solar radiation as temperature data after the time of sunrise in the area. And causing the irrigation mechanism to execute a first irrigation at a point in time when temperature data representing a temperature within an appropriate temperature zone predetermined for growing agricultural products is measured. Steps and, the second and subsequent watering a step to be executed by the watering mechanism, time interval from said respective ends of irrigation for the proper temperature zone more temperature zones obtained by dividing the start of the next irrigation set for each temperature zone in accordance with the cultivation indicator information irrigation interval is, measured by the timer with reference to the temperature of the elapsed time represented by the temperature data measured by the weather sensor for each temperature zone, wherein the plurality of temperature Of the plurality of irrigation timings determined according to each irrigation interval set for each of the belts, the irrigation mechanism performs irrigation according to the earliest irrigation timing, and a process of resetting the timer. Performing a second step that repeats until sunset. According to the present invention as well, it becomes possible to adjust the frequency of irrigation for the agricultural product to be cultivated in accordance with the temperature.

  According to another aspect of the present invention, a program that causes a general computer such as a CPU (Central Processing Unit) to execute the first step and the second step, that is, causes the computer to function as a controller of the present invention. A mode for providing a program is conceivable. According to this aspect, it is possible to perform watering of the agricultural product to be cultivated in consideration of the temperature. Note that specific provision modes of the program include a mode in which the program is written and distributed on a computer-readable recording medium such as a compact disk-read only memory (CD-ROM) or a flash ROM (read only memory). Alternatively, the program may be distributed by download via a telecommunication line such as the Internet.

It is a figure showing the example of composition of cultivation support system 1A by a 1st embodiment of the present invention. It is a flowchart which shows the flow of the control method which the irrigation control controller 30 contained in the cultivation assistance system 1A performs. It is a figure showing the example of a display of the history of the temperature change measured by climate sensor 10 when temperature sensor 10 is installed in various places in a house. It is a figure showing the example of a display of the history of the number of times of irrigation starting in a day. It is a figure showing the example of composition of cultivation support system 1B by a 2nd embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(A: First embodiment)
FIG. 1 is a block diagram illustrating a configuration example of a cultivation support system 1A according to the first embodiment of the present invention. The cultivation support system 1A is a computer system for supporting hydroponics of agricultural products such as tomatoes. As shown in FIG. 1, the cultivation support system 1A includes a climate sensor 10, a watering mechanism 20A, and a watering control controller 30. The climate sensor 10 and the watering mechanism 20A are connected to the watering control controller 30 via signal lines, respectively. In the present embodiment, the climate sensor 10 and the watering mechanism 20A are connected to the watering control controller 30 by wire, but the climate sensor 10 and the watering mechanism 20A are wirelessly connected to the watering control controller 30 via, for example, a wireless LAN (Local Area Network). It may be connected.

  In FIG. 1, reference symbol CF indicates a culture medium in nutrient cultivation. The culture medium CF may be water supplied from a water source WS such as a tank storing agricultural water via a water channel WC, or may be a solid medium supplied with the water such as rock wool. The medium CF may be installed in a greenhouse such as a greenhouse, or may be installed in the open air. In the present embodiment, an example in which the present invention is applied to hydroponic cultivation of agricultural products will be described. However, the present invention may be applied to support for open-field cultivation using soil as a medium CF.

  The climate sensor 10 is provided near the culture medium CF. The climate sensor 10 includes at least a temperature sensor that detects a temperature around the culture medium CF. More specifically, when the culture medium CF is installed in a house or in the open-air, the climate sensor 10 needs to be installed in a position affected by direct sunlight, and the culture medium CF is placed in a light-shielded environment. If it is installed, it must be installed at a position that is affected by the amount of solar radiation under shade. This is for measuring the temperature or the amount of thermal energy received by the leaves of the agricultural product to be cultivated through the temperature or solar radiation as temperature data. The climate sensor 10 may include a humidity sensor that measures humidity, a solar radiation sensor that measures solar radiation energy, and the like, in addition to the temperature sensor. The climate sensor 10 outputs temperature data indicating the measured temperature to the irrigation control controller 30.

  The watering mechanism 20A is provided in a water channel WC from the water source WS to the culture medium CF. Under the control of the watering controller 30, the watering mechanism 20 </ b> A irrigates the culture medium CF using water supplied via the water channel WC. As shown in FIG. 1, the watering mechanism 20A includes a liquid fertilizer mixer 210A and a valve 220. Liquid fertilizer mixing device 210A mixes liquid fertilizer into water supplied via water channel WC. The valve 220 is opened and closed by the irrigation controller 30. When the valve 220 is switched from the closed state to the open state, water into which liquid fertilizer has been mixed is supplied to the culture medium CF by the liquid fertilizer mixing device 210A.

  Although not shown in detail in FIG. 1, the liquid fertilizer mixer 210A includes a pump that draws water from a water source WS through a water channel WC. The amount of water per unit time (for example, one minute) drawn by the pump from the water source WS is predetermined. The user of the cultivation support system 1A determines the amount of liquid fertilizer (in other words, the concentration of fertilizer in the water supplied to the culture medium CF) to be mixed into a unit volume of water (for example, the amount of water drawn by a pump in a unit time). Can be set for The user of the cultivation support system 1A refers to a producer who grows agricultural products in the medium CF while receiving support from the cultivation support system 1A.

  Although details will be described later, in the present embodiment, irrigation is performed a plurality of times from sunrise to sunset. Each of the multiple irrigation is performed in the following manner. The liquid fertilizer mixer 210A operates the pump in synchronization with the valve 220 being switched from the closed state to the open state, and mixes and discharges the amount of liquid fertilizer set by the user into the water drawn in per unit time. I do. Thereby, one-time irrigation is started. The liquid fertilizer mixing device 210A stops the pump in synchronization with the switching of the valve 220 from the open state to the closed state. This completes one irrigation. Hereinafter, the time from the start time to the end time of one irrigation is referred to as “irrigation time”. In this embodiment, since the amount of water per unit time supplied from the watering mechanism 20A to the culture medium CF is constant, the amount of water supplied to the culture medium CF by one watering depends on the length of watering time. Determined. The user of the cultivation support system 1A can set a watering time for a watering control controller 30 described later. In the following, the time interval from the end time of irrigation to the start time of the next irrigation is referred to as “irrigation interval”.

  The watering control controller 30 is a computer device such as a personal computer, for example, and is an example of a first controller that controls the watering mechanism 20A. Although not shown in detail in FIG. 1, the irrigation control controller 30 includes a CPU, a volatile memory such as a RAM (Random Access Memory), a nonvolatile memory such as a hard disk, and a user interface including a liquid crystal display and a keyboard. And a communication interface such as a NIC (Network Interface Card). The communication interface of the irrigation controller 30 is connected to the telecommunication line NW via a relay device such as a router. The irrigation control controller 30 performs data communication with various server devices connected to the electric communication line NW via the electric communication line NW. In the present embodiment, the case where the irrigation control controller 30 is a personal computer will be described, but the irrigation control controller 30 may be a PLC (Programmable Logic Controller). When a PLC is used as the irrigation control controller 30, an SD card may be used locally as a data storage destination, and a database server on the cloud may be used in the cloud. A personal computer, tablet terminal, What is necessary is just to use a smart phone etc.

  As a specific example of the various server devices connected to the telecommunication line NW, information managed and operated by a weather station or the like that controls the area where the culture medium CF is provided, and information indicating a sunrise time and a sunset time in the area. And a second server device which is operated and managed by an agricultural test center or the like which has jurisdiction over the above-mentioned area and distributes cultivation guideline information indicating a cultivation guideline. In the cultivation guideline information, the number of times of irrigation to be executed from sunrise to sunset is defined according to the season according to the type of agricultural product to be cultivated and the area where the culture medium is provided. According to the theory of plant growth control, it is said that the growth rate of a plant greatly changes depending on the temperature or the amount of thermal energy (in other words, the temperature) given to leaves through solar radiation, and cultivation guidelines are based on this growth control theory. Generally, it is defined as follows. It is preferable that irrigation be performed at a higher frequency as the growth rate is higher. For this reason, in the cultivation guideline information, the higher the temperature, the larger the number of times of irrigation.

  The irrigation control controller 30 acquires time information indicating the sunrise time and the sunset time in the area where the culture medium CF is provided from the first server device by data communication via the electric communication line NW. In addition, the irrigation control controller 30 acquires cultivation guideline information corresponding to the area where the cultivation target agricultural product and the culture medium CF are provided by data communication via the electric communication line NW.

  In the non-volatile memory of the irrigation control controller 30, a control program for realizing a control method that significantly shows the features of the present invention is installed in advance. The volatile memory of the irrigation controller 30 is used as a work area when executing the control program. When the CPU of the irrigation control controller 30 receives an instruction to execute the control program via the user interface unit, the CPU reads the control program from the non-volatile memory to the volatile memory and starts executing the control program. The CPU of the irrigation control controller 30 operating according to the control program prompts the user to set the type of the cultivation target agricultural product and the area where the medium CF is provided, and when these settings are made, the corresponding cultivation guideline Obtain information from the second server device. Thereafter, the CPU of the irrigation control controller 30 sends the time information from the first server device every day at a predetermined time (for example, midnight) which is estimated to be sufficiently before the sunrise every day. And executes the above control method.

  FIG. 2 is a flowchart showing a flow of the control method. As shown in FIG. 2, the control method includes a first step SA100 and a second step SA110. The processing contents of each of the first step SA100 and the second step SA110 are as follows.

  The first step SA100 is a process executed at the time of sunrise. In the first step SA100, the CPU of the irrigation control controller 30 determines whether or not the temperature represented by the temperature data measured by the climate sensor 10 is within a predetermined appropriate temperature range for growing agricultural products. I do. The appropriate temperature zone may vary depending on the type of agricultural product to be cultivated, but is, for example, a temperature zone of 10 ° C to 30 ° C. It is said that the optimum temperature for growing a temperate plant is in the range of 10 ° C. to 30 ° C. and the optimum value is 25 ° C., which is almost consistent with experience. For this reason, in this embodiment, the appropriate temperature zone for growing the agricultural product to be cultivated is defined as a temperature zone of 10 ° C to 30 ° C.

  If the determination result is “Yes”, the CPU of the watering control controller 30 opens the valve 220 for the above watering time, and causes the watering mechanism 20A to perform the first watering. On the other hand, when the determination result is “No”, the CPU of the irrigation control controller 30 performs the above determination again after waiting for a predetermined time. If the above determination result is "Yes" at the time of sunrise, the first irrigation is performed at the time of sunrise. On the other hand, if the above determination result is “No” at the time of sunrise, the first watering is not performed at the time of sunrise, and is performed after the temperature rises to the appropriate temperature zone. Is done.

In the second step SA110, the CPU of the watering control controller 30 first sets the watering interval until the next watering timing for each of the plurality of temperature zones obtained by dividing the appropriate temperature zone. More specifically, the CPU of the watering control controller 30 sets the watering interval of each temperature zone by dividing the time interval from sunrise to sunset according to the frequency of watering specified in the cultivation guide information. In the present embodiment, the appropriate temperature zone is divided into four temperature zones having a temperature range of 5 ° C., and a separate irrigation interval is set for each of these four temperature zones.
As described above, in the cultivation guideline information, the frequency of irrigation is determined to be higher as the temperature is higher, so that the irrigation interval is set shorter in a temperature zone corresponding to a higher temperature.

  The CPU of the irrigation control controller 30 measures the elapsed time of each of the plurality of temperature zones with a timer while referring to the temperature represented by the temperature data measured by the climate sensor 10, and according to the earliest irrigation timing, the irrigation mechanism. The process of causing 20A to perform irrigation and resetting the timer is repeated until sunset. For this reason, in this embodiment, the higher the temperature, the shorter the watering interval, and watering is performed more frequently.

  For example, during the morning when the temperature gradually rises, the frequency of irrigation gradually decreases and the frequency of irrigation increases each time irrigation is performed. Frequency is low. In other words, the cultivation support system 1A of the present embodiment functions as an AI that autonomously performs watering according to the plant growth control theory, and can adjust the frequency of watering of agricultural products to be cultivated in accordance with the temperature. Become. As described above, according to the present embodiment, irrigation can be performed appropriately in response to a change in climate, and human failure can be reduced. As a result, according to the present embodiment, it is possible to avoid the occurrence of root rot or wilting and to prevent a decrease in the yield.

  The user of the cultivation support system 1A can supervise the operation of the cultivation support system 1A and adjust the cultivation conditions for each area and each house by finely adjusting the watering time (in other words, the amount of watering at one time). . Although the watering mechanism 20A of the cultivation support system 1A includes the liquid fertilizer mixing device 210A, the liquid fertilizer mixing device 210A may be omitted. In addition, when the temperature sensor 10 is installed in various places in the house, the history of the temperature change measured by the climate sensor 10 and the history of the number of times of irrigation start in a day are recorded, and in accordance with the user's instruction. 3 or FIG. 4 and displayed on the user interface unit of the irrigation control controller 30. FIG. 3 is a diagram showing a display example of a history of temperature change measured by the temperature sensor 10 when the temperature sensor 10 is installed at various places in the house. Each graph curve in FIG. Corresponding to the differences in the installation locations.

(B: Second embodiment)
FIG. 5 is a block diagram illustrating a configuration example of a cultivation support system 1B according to the second embodiment of the present invention. 5, the same components as those in FIG. 1 are denoted by the same reference numerals. As is apparent from a comparison between FIG. 5 and FIG. 1, the following two points are different between the cultivation support system 1B and the cultivation support system 1A. First, a watering mechanism 20B is provided instead of the watering mechanism 20A. Second, a fertilization control controller 40 is provided. In the present embodiment, the cultivation guideline information defines the frequency of irrigation to be performed from sunrise to sunset according to the season, according to the type of agricultural product and the area where the medium CF is provided. The first embodiment differs from the first embodiment in that the optimum value of the fertilizer concentration is defined.

  The watering mechanism 20B differs from the watering mechanism 20A in having a liquid manure mixing device 210B instead of the liquid manure mixing device 210A. Liquid fertilizer mixer 210B differs from liquid fertilizer mixer 210A in that the amount of liquid fertilizer mixed into water per unit volume supplied from water source WS is changed in accordance with an instruction from fertilization controller 40.

  The fertilization control controller 40 is a personal computer like the irrigation control controller 30. As shown in FIG. 5, the fertilization control controller 40 is connected to the liquid fertilizer mixing device 210B and also to the irrigation control controller 30. The irrigation control controller 30 is an example of a first controller included in the cultivation support system 1B, and the fertilization control controller 40 is an example of a second controller included in the cultivation support system 1B. Temperature data is given to the fertilization controller 40 via the irrigation controller 30.

  The fertilization controller 40 instructs the liquid fertilizer mixer 210B on the amount of liquid fertilizer mixed into water per unit volume supplied from the water source WS according to the temperature represented by the temperature data measured by the climate sensor 10. Specifically, the fertilization control controller 40 raises the fertilizer concentration when the temperature represented by the temperature data measured by the climate sensor 10 is low, based on the optimum value of the fertilizer concentration defined by the cultivation guideline information. When fertilizer is high, lower fertilizer concentration. In addition, when a suitable value of the increase width and the decrease width of the fertilizer concentration according to the temperature is defined in the cultivation guide information, the fertilization control controller 40 sends the cultivation guide information and the temperature measured by the climate sensor 10 to each other. The fertilizer concentration may be increased or decreased accordingly.

  According to the present embodiment, in addition to being able to adjust the frequency of irrigation to the cultivation target agricultural product in accordance with the temperature, it becomes possible to adjust the fertilization to the cultivation target agricultural product in accordance with the temperature. . In the present embodiment, the fertilizer concentration is adjusted according to the temperature measured by the climate sensor 10. However, the fertilizer concentration may be adjusted according to the time period during which irrigation is performed. Specifically, the fertilizer concentration is lowered during irrigation performed in the morning, the fertilizer concentration is increased during irrigation performed in the afternoon, and the fertilizer concentration is increased during irrigation performed at night. It is conceivable to increase the concentration. By doing so, the occurrence of cracks and softened balls could be reduced. Further, in the present embodiment, the irrigation control controller 30 and the fertilization control controller 40 are separate devices. However, one controller may have the role of the irrigation control controller 30 and the role of the fertilization control controller 40. Good.

(C: deformation)
While the embodiments of the present invention have been described above, the following modifications may be made to these embodiments.
(1) Although the irrigation control controller 30 in each of the above embodiments adjusts the irrigation interval according to the temperature represented by the temperature data measured by the climate sensor 10, the irrigation control controller 30 adjusts the irrigation interval during the growing stage of the agricultural product (in the growing season or in the cultivating season). At least one of the watering interval and the watering time may be adjusted depending on whether or not there is watering. This is because over-watering during the seedling stage directly leads to root rot since plants in the seedling stage have a small number of leaves and do not require frequent irrigation. Specifically, the user inputs an initial value of the number of leaves of the agricultural product (for example, the number of leaves at the start of cultivation) to the irrigation control controller 30, and thereafter, the irrigation control controller 30 uses the climate sensor 10 every day. The integrated value from the start of cultivation for the temperature represented by the measured temperature data is calculated, and the number of leaves according to the integrated value is calculated. Then, the watering controller 30 adjusts at least one of the watering interval or the watering time according to the calculated number of leaves. For example, during the seedling raising period, the watering interval is adjusted to be wide. Also, the watering interval may be adjusted according to the temperature, and the watering time may be adjusted according to the number of leaves. When the user performs leaf removal, the user manually corrects the number of leaves to the value after leaf removal, and thereafter, the irrigation control controller 30 determines the number of leaves of the cultivation target agricultural product at the time of the removal. The number of leaves should be fixed.

(2) When the medium CF is installed in the open-air, the user may separately set the watering time in clear weather and the watering time in rainy weather. In particular, in the case of open-field cultivation, the amount of medium in which the plants are rooted is large, and frequent irrigation is not required. In this case, a rainfall sensor for measuring rainfall is connected to the irrigation control controller 30 as a rain sensor, and an irrigation time per one time, in other words, an irrigation amount per time, is determined according to the rainfall measured by the rain sensor. The irrigation control controller 30 may be adjusted. Also, when the culture medium CF is installed in the house, a rain sensor for measuring the presence or absence of rain is connected to the irrigation control controller 30 as a rain sensor, and once depending on the presence or absence of rain measured by the rain sensor, once. The perfusion time may be adjusted by the perfusion control controller 30.

(3) The irrigation controller 30 or a controller having both the function of the irrigation controller 30 and the function of the fertilization controller 40 may be manufactured and sold as a single unit. Alternatively, a program that causes a general computer such as a CPU to function as the irrigation control controller 30 or a program that functions as the irrigation control controller 30 and the fertilization control controller 40 may be manufactured and sold alone.

(4) In each of the above embodiments, watering is performed while adjusting the watering interval determined according to the cultivation guideline from the type of the cultivation target agricultural product, the cultivation area and the cultivation time according to the temperature change within a day. However, if it is desired to fine-tune the growth control theory that is the basis of the cultivation guidelines, a control program may be created so that the number of times of irrigation can be increased or decreased in each of the morning, afternoon, and night time zones. In addition, the cultivation support system of the present invention is constructed so that data such as cultivation environment, cultivation status, and the amount of harvest can be accurately input and accumulated. By collecting data and performing machine learning or the like, an AI based on a new growth control theory may be created. It takes a long time to collect a lot of data with one system because growing a plant takes time. However, by operating multiple systems in parallel, more useful data including failure data can be obtained. Can be collected and accumulated in a short period of time.

1A, 1B: Cultivation support system, 10: Climate sensor, 20A, 20B: Irrigation mechanism, 210A, 210B: Liquid fertilizer mixer, 220: Valve, 30: Irrigation control controller, 40: Fertilization control controller.

Claims (8)

A climate sensor that measures at least the amount of thermal energy given to the leaves of the agricultural product to be cultivated via temperature or solar radiation as temperature data,
An irrigation mechanism for performing irrigation on the medium using water supplied from a water source,
It is cultivation guideline information that defines the frequency of irrigation to be performed from sunrise to sunset according to the season depending on the type of the agricultural product and the area where the culture medium is provided, and the higher the temperature, the higher the frequency of irrigation. A first controller that controls the watering mechanism such that watering is performed a plurality of times between sunrise and sunset according to the cultivation guideline information that is set high,
The first controller comprises:
After the time of sunrise in the area, a first watering operation is performed by the watering mechanism at a time point when temperature data representing a temperature within a predetermined appropriate temperature zone for growing agricultural products is measured by the climate sensor. Steps and
A step of causing the watering mechanism to execute the second or subsequent watering, wherein the watering is a time interval from the end of watering to the start of the next watering for each of a plurality of temperature zones obtained by dividing the appropriate temperature zone. set for each temperature zone in accordance with the cultivation guidance information apart, measured by the timer with reference to the temperature of the elapsed time represented by the temperature data measured by the weather sensor for each temperature zone, each of the plurality of temperature zones While causing the watering mechanism to perform watering according to the watering timing that has arrived earliest among a plurality of watering timings determined according to each watering interval set for, processing to reset the timer, until sunset. And a second step to be repeated.   The cultivation support system according to claim 1, wherein the watering mechanism includes a liquid manure mixing device that mixes liquid manure into water supplied from the water source.   3. The cultivation support according to claim 2, further comprising a second controller that adjusts an amount of liquid fertilizer mixed with the liquid fertilizer into a unit volume of water according to a temperature represented by temperature data measured by the climate sensor. 4. system.   The cultivation support system according to claim 2, further comprising a second controller that adjusts an amount of liquid fertilizer mixed into the unit volume of water by the liquid fertilizer mixing device according to a time zone to which the watering timing belongs. Including rain sensor,
The first controller comprises:
The cultivation support system according to any one of claims 1 to 4, wherein an amount of irrigation per time is adjusted according to a measurement result by the rain sensor. The first controller comprises:
The growth stage of the agricultural product is estimated from the integrated value of the temperature represented by the temperature data measured by the climate sensor, and the frequency of irrigation is adjusted according to the estimated growth stage. The cultivation support system according to 1. A watering mechanism for watering the culture medium using water supplied from a water source, the frequency of irrigation to be performed between sunrise and sunset depending on the type of agricultural product and the area where the culture medium is provided, according to the season. It is a cultivation guideline information that defines , a controller that controls so that a plurality of times of irrigation is performed from sunrise to sunset according to the cultivation guideline information that is set higher in frequency of irrigation as the temperature is higher,
After the time of the sunrise in the area, by a climate sensor that measures at least the amount of thermal energy given to the leaves of the agricultural product via temperature or solar radiation as temperature data, the temperature within an appropriate temperature zone predetermined for growing the agricultural product is measured. A first step of causing the irrigation mechanism to execute a first irrigation at a point in time when the represented temperature data is measured;
A step of causing the watering mechanism to execute the second or subsequent watering, wherein the watering is a time interval from the end of watering to the start of the next watering for each of a plurality of temperature zones obtained by dividing the appropriate temperature zone. set for each temperature zone in accordance with the cultivation guidance information apart, measured by the timer with reference to the temperature of the elapsed time represented by the temperature data measured by the weather sensor for each temperature zone, each of the plurality of temperature zones Along with performing the irrigation by the irrigation mechanism according to the irrigation timing that arrives earliest among a plurality of irrigation timings determined according to each irrigation interval set for the process of resetting the timer, until sunset Performing a second step of repeating. A watering mechanism for watering the culture medium using water supplied from a water source, the frequency of irrigation to be performed between sunrise and sunset depending on the type of agricultural product and the area where the culture medium is provided, according to the season. It is a cultivation guideline information that defines, and a control method for controlling so that watering is performed a plurality of times from sunrise to sunset in accordance with the cultivation guideline information in which the frequency of irrigation increases as the temperature increases. So,
After the time of the sunrise in the area, by a climate sensor that measures at least the amount of thermal energy given to the leaves of the agricultural product via temperature or solar radiation as temperature data, the temperature within an appropriate temperature zone predetermined for growing the agricultural product is measured. A first step of causing the irrigation mechanism to execute a first irrigation at a point in time when the represented temperature data is measured;
A step of causing the watering mechanism to execute the second or subsequent watering, wherein the watering is a time interval from the end of watering to the start of the next watering for each of a plurality of temperature zones obtained by dividing the appropriate temperature zone. set for each temperature zone in accordance with the cultivation guidance information apart, measured by the timer with reference to the temperature of the elapsed time represented by the temperature data measured by the weather sensor for each temperature zone, each of the plurality of temperature zones While causing the watering mechanism to perform watering according to the watering timing that has arrived earliest among a plurality of watering timings determined according to each watering interval set for, processing to reset the timer, until sunset. Performing a second step to be repeated.