Green manure management method, green manure management system and program

Abstract

To present a cultivation period in which green manure crops in a farm field are cultivated.SOLUTION: A green manure management method includes extracting of a blank period 520 where cultivation of crops is not performed in one or more farm fields, on the basis of a cultivation plan in the one or more farm fields. The green manure management method includes determining a green manure cultivation period 530 on the basis of the extracted blank period 520. The extracting the blank period 520 may include: determining the minimum period on the basis of at least one of the time of the blank period 520, and the region of the one or more farm fields; and extracting a period in which cultivation of crops is not performed, as the blank period 520.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a green manure management method, a green manure management system, and a green manure management program. [Background technology]

[0002] Green manure may be cultivated in a farm field. Specifically, green manure may be cultivated in a farm field during a period when no commercial crops are cultivated, and the cultivated green manure may be used as a type of fertilizer. For example, Patent Document 1 discloses a working machine that simultaneously harvests and plows green manure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-154524 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, although green manure crops are effective in improving the soil in farm fields, they are grown during the gaps between crop cultivation. This means that farmers must manage the gaps in each farm field. This can be difficult, especially when farmers have many farm fields.

[0005] In view of the above circumstances, one of the objectives of the present disclosure is to support green manure by presenting a cultivation period for cultivating green manure crops in a farm field. Other objectives can be understood from the following description and the description of the embodiment. [Means for solving the problem]

[0006] The means for solving the problems will be described below using the numbers and symbols used in the description of the embodiment of the invention. These numbers and symbols are added in parentheses for reference purposes to show an example of the correspondence between the description of the claims and the description of the embodiment of the invention. Therefore, the description in parentheses should not be interpreted as limiting the scope of the claims.

[0007] To achieve the above object, a green manure management method according to one embodiment includes extracting a gap period (520) during which no crops are cultivated in one or more fields based on a cultivation plan for the one or more fields. The green manure management method also includes determining a green manure cultivation period (530) during which a green manure crop is cultivated based on the extracted gap period (520).

[0008] A green manure management system (1000) according to one embodiment for achieving the above object includes a blank period extraction unit (160) and a cultivation period determination unit (170). The blank period extraction unit (160) extracts blank periods (520) during which no crops are cultivated in one or more fields based on cultivation plans for the one or more fields. The cultivation period determination unit (170) determines a green manure cultivation period (530) during which a green manure crop is cultivated based on the extracted blank periods (520).

[0009] A green manure management program (420) according to an embodiment for achieving the above object causes a computing device (120, 220) to extract a gap period (520) during which no crops are cultivated in one or more fields, based on a cultivation plan for the one or more fields. The green manure management program (420) also causes the computing device (120, 220) to determine a green manure cultivation period (530) during which a green manure crop is cultivated, based on the extracted gap period (520). Effect of the Invention

[0010] According to the above aspect, the user can check the cultivation period for cultivating green manure crops in the field and determine whether or not to cultivate green manure crops. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic diagram of a green manure management system in one embodiment. [Diagram 2] 2 is a diagram for explaining a cultivation plan, blank period, and green manure cultivation period in one embodiment. FIG. [Diagram 3] FIG. 1 is a diagram showing the configuration of a green manure management device in one embodiment. [Figure 4] FIG. 2 is a diagram showing functional blocks executed by a green manure management system in one embodiment. [Diagram 5] FIG. 2 is a diagram illustrating a configuration of a terminal according to an embodiment. [Figure 6] 1 is a flowchart showing a process in which a green manure management system in one embodiment determines a green manure cultivation period. [Figure 7] FIG. 2 is a diagram for explaining a process for determining a green manure cultivation period in one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] (Embodiment 1) A green manure management system 1000 according to this embodiment of the present invention will be described with reference to the drawings. In this embodiment, as shown in Fig. 1, the green manure management system 1000 includes a green manure management device 100 and a terminal 200. The green manure management device 100 is communicably connected to the terminal 200 via a network 20, for example, the Internet.

[0013] The green manure management system 1000 extracts a blank period during which no crops are cultivated in the cultivation plan of one or more fields, and determines a cultivation period during the extracted blank period during which a green manure crop is cultivated. For example, a cultivation plan for cultivating a commercial crop is set in one or more fields. For example, as shown in FIG. 2, the cultivation plan includes a commercial cultivation period 510 during which a commercial crop is cultivated in one or more fields, such as field A, field B, field C, etc. For example, the cultivation plan includes two or more commercial cultivation periods 510 in one or more fields.

[0014] In the example shown in FIG. 2, in "field A", it is planned to cultivate "wheat" in two commercial cultivation periods 510, including a first commercial cultivation period 510-1 from April 2023 to August 2023 and a second commercial cultivation period 510-2 from April 2024 to August 2024. In "field B", two commercial cultivation periods 510 are planned, including a third commercial cultivation period 510-3 in which "wheat" is cultivated from April 2023 to August 2023, and a fourth commercial cultivation period 510-4 in which "cabbage" is cultivated from October 2023 to April 2024. In "field C", two commercial cultivation periods 510 are planned, in which "rice" is cultivated in a fifth commercial cultivation period 510-5 from May 2023 to October 2023, and "black soybeans" are cultivated in a sixth commercial cultivation period 510-6 from June 2024 to November 2024. In "field D", two commercial cultivation periods 510 are planned, in which "black soybeans" are cultivated in a seventh commercial cultivation period 510-7 from June 2023 to November 2023 and an eighth commercial cultivation period 510-8 from June 2024 to November 2024.

[0015] The green manure management device 100 extracts a blank period 520 in which commercial crops are not cultivated in one or more fields, and determines a green manure cultivation period 530 in which a green manure crop is cultivated according to the extracted blank period 520. For example, in "field A", the green manure management device 100 extracts a first blank period 520-1 between a first commercial cultivation period 510-1 and a second commercial cultivation period 510-2. The green manure management device 100 determines a first green manure cultivation period 530-1 in which a green manure crop is cultivated from the extracted first blank period 520-1. In "field B", the period in which commercial crops are not cultivated is short, so the green manure management device 100 does not determine a green manure cultivation period 530. Similarly, in "field C", the green manure management device 100 extracts a fifth blank period 520-5 and determines a fifth green manure cultivation period 530-5 from the extracted fifth blank period 520-5. Similarly, in "field D", the green manure management device 100 extracts a seventh blank period 520-7 and determines a seventh green manure cultivation period 530-7.

[0016] The green manure management device 100 outputs display information indicating, in association with each other, a target field in which a green manure crop is cultivated and a green manure cultivation period 530 in the target field to the terminal 200. By displaying the display information, the terminal 200 notifies a user, for example, a manager or worker of one or more fields, of the green manure cultivation period 530 in which a green manure crop can be cultivated. This allows the user to easily understand the green manure cultivation period of the green manure crop and easily determine whether or not to cultivate green manure.

[0017] (Configuration of green manure management system) The configuration of the green manure management device 100 included in the green manure management system 1000 shown in FIG. 1 will be described. As shown in FIG. 3, the green manure management device 100 includes an input / output device 110, a calculation device 120, a communication device 130, and a storage device 140. The green manure management device 100 is a computer including, for example, a cloud server. Information for the calculation device 120 to execute processing is input to the input / output device 110. The input / output device 110 outputs the results of the processing executed by the calculation device 120. The input / output device 110 includes various input devices and output devices, including, for example, a keyboard, a mouse, a microphone, a display, a speaker, a touch panel, and the like. The input / output device 110 may be omitted.

[0018] The communication device 130 is connected to the network 20 and communicates with each device via the network 20. For example, the communication device 130 transfers information acquired from the terminal 200 to the arithmetic device 120. Also, the communication device 130 transfers a signal generated by the arithmetic device 120 to the terminal 200. Also, the communication device 130 may acquire information from another device that is not connected via the network 20. For example, the communication device 130 may acquire information from another device via any storage medium, such as a memory card or a Universal Serial Bus (USB) memory. Also, the communication device 130 may acquire information from another device that is directly connected via a USB or the like. The communication device 130 includes various interfaces, such as a Network Interface Card (NIC) and a USB.

[0019] The storage device 140 stores various data for determining a green manure cultivation period 530 for cultivating green manure crops in one or more farm fields, such as the cultivation plan data 400, the cultivation calendar data 410, and the green manure management program 420. The storage device 140 is used as a non-transitory tangible storage medium for storing the green manure management program 420. The green manure management program 420 may be provided as a computer program product recorded in a computer-readable storage medium 1, or may be provided as a computer program product downloadable from a server.

[0020] The cultivation plan data 400 stores a cultivation plan representing a commercial cultivation period 510 in which a commercial crop is cultivated in one or more fields, as shown in Fig. 2. The cultivation plan represents, for example, the type of crop, such as rice, black soybeans, wheat, etc., cultivated in one or more fields. The cultivation plan also represents two or more commercial cultivation periods 510 in at least a part of the one or more fields. The cultivation plan representing the commercial cultivation period 510 is registered in advance by a user.

[0021] The cultivation calendar data 410 stores cultivation calendar information that represents the cultivation calendar of green manure crops in an area including one or more fields. For example, the cultivation calendar information represents a cultivation calendar according to the type of green manure crop, such as oats, mustard, rye, hairy vetch, etc. For example, the cultivation calendar information represents the type of green manure crop in association with the cultivation period of the green manure crop. The cultivation calendar information is registered in any manner, for example, registered in advance by a user. The cultivation calendar information represents the timing of work performed when cultivating a green manure crop, such as sowing, tamping, chopping, and plowing.

[0022] The arithmetic device 120 reads out and executes the green manure management program 420 from the storage device 140, and performs various data processing for determining the green manure cultivation period 530 in one or more farm fields. For example, the arithmetic device 120 includes a central processing unit (CPU) and the like.

[0023] The arithmetic device 120 reads and executes the green manure management program 420, and cooperates with the storage device 140 to realize a data storage unit 150, a blank period extraction unit 160, a cultivation period determination unit 170, and an output unit 180, as shown in FIG. 4. The data storage unit 150 stores cultivation plan data 400 and cultivation calendar data 410. The blank period extraction unit 160 extracts a blank period 520 in which no crops are cultivated in one or more fields. The cultivation period determination unit 170 determines a green manure cultivation period 530 in which a green manure crop is cultivated. The output unit 180 outputs display information representing the green manure cultivation period 530 in association with the target field in which the green manure crop is cultivated to the terminal 200.

[0024] Next, the configuration of the terminal 200 shown in Fig. 1 will be described. As shown in Fig. 5, the terminal 200 includes an input / output device 210, a calculation device 220, a communication device 230, and a storage device 240. The terminal 200 includes, for example, a computer, a tablet, a mobile phone, and the like. Information for the calculation device 220 to execute processing is input to the input / output device 210. In addition, the input / output device 210 outputs the result of the calculation device 220 executing the processing. The input / output device 210 includes various input devices and output devices, and includes, for example, a keyboard, a mouse, a microphone, a display, a speaker, a touch panel, and the like.

[0025] The communication device 230 is connected to the network 20 and communicates with each device via the network 20. The communication device 230 transfers, for example, display information acquired from the green manure management device 100 to the arithmetic device 220. The communication device 230 may also acquire information from other devices that are not connected via the network 20. For example, the communication device 230 may acquire information from other devices via any storage medium, such as a memory card or a Universal Serial Bus (USB) memory. The communication device 230 may also acquire information from other devices that are directly connected via a USB or the like. The communication device 230 includes various interfaces, such as a transceiver used for wireless communication such as a wireless LAN (Local Area Network) or a cellular network, a NIC (Network Interface Card), and a USB.

[0026] The storage device 240 stores various data for displaying display information acquired from the green manure management device 100, for example, the display program 430. The storage device 240 is used as a non-transitory tangible storage medium for storing the display program 430. The display program 430 may be provided as a computer program product recorded in a computer-readable storage medium 2, or may be provided as a computer program product downloadable from a server.

[0027] The arithmetic unit 220 reads out and executes the display program 430 from the storage device 240, and performs various data processing for displaying display information. For example, the arithmetic unit 220 includes a central processing unit (CPU) and the like.

[0028] 4, the arithmetic device 220 reads and executes the display program 430 to implement the display unit 250 in cooperation with the storage device 240. The display unit 250 cooperates with the input / output device 210 to display display information.

[0029] (Operation of green manure management system) The operation of the green manure management system 1000 will be described. The arithmetic device 120 of the green manure management device 100 reads and executes the green manure management program 420 when a predetermined time, for example, a preset time every day, is reached. The arithmetic device 120 may read and execute the green manure management program 420 when it receives a request signal for displaying display information from the terminal 200. The arithmetic device 120 may also read and execute the green manure management program 420 when the period until the time to harvest a crop cultivated in any one of one or more farm fields becomes shorter than a threshold value. When the arithmetic device 120 reads and executes the green manure management program 420, it starts the process shown in FIG. 6, which is a part of the green manure management method.

[0030] In step S110, the blank period extraction unit 160 realized by the calculation device 120 extracts a candidate blank period 525 representing a period during which no crops are cultivated in one or more fields. For example, the blank period extraction unit 160 extracts, for each field, a period sandwiched between commercial cultivation periods 510 as the candidate blank period 525 during which no crops are cultivated. For example, the blank period extraction unit 160 extracts, for each field, a period from the end of a commercial cultivation period 510 to the start of the next commercial cultivation period 510 as the candidate blank period 525.

[0031] For example, in the example shown in FIG. 2, the blank period extraction unit 160 extracts the period between the first commercial cultivation period 510-1 and the second commercial cultivation period 510-2 in "field A" as the first blank candidate period 525-1. More specifically, the first blank candidate period 525-1 represents the period from the end of the first commercial cultivation period 510-1 to the start of the second commercial cultivation period 510-2. Similarly, in "field B", the period between the third commercial cultivation period 510-3 and the fourth commercial cultivation period 510-4 is extracted as the third blank candidate period 525-3. Similarly, in "field C" and "field D", the fifth blank candidate period 525-5 and the seventh blank candidate period 525-7 are extracted, respectively.

[0032] 6, the blank period extraction unit 160 extracts a blank period 520 representing a period during which a green manure crop can be cultivated from the candidate blank period 525. For example, the blank period extraction unit 160 determines a minimum period representing the minimum period during which a green manure crop can be cultivated, and extracts a candidate blank period 525 greater than the minimum period as the blank period 520. The minimum period represents, for example, a period equal to or greater than the cultivation period from sowing to plowing of a green manure crop.

[0033] For example, the blank period extraction unit 160 first determines the minimum period based on at least one of the time of the blank candidate period 525 and the area including the field. For example, the blank period extraction unit 160 determines the minimum period based on the start time of the blank candidate period 525. For example, the green manure cultivation period 530 from sowing to plowing may differ depending on the time. For example, the green manure cultivation period 530 when sowing is performed in spring may be shorter than the green manure cultivation period 530 when sowing is performed in autumn. For example, the blank period extraction unit 160 may hold information representing the minimum period associated with the start time of cultivation, for example, the start month, and extract the minimum period associated with the start time of the blank candidate period 525 from this information. The minimum period may be determined based on any time within the blank candidate period 525, for example, a time representing an intermediate point between the start time and the end time, the end time, etc. In this case, the blank period extraction unit 160 may hold information representing the minimum period associated with the corresponding time within the blank candidate period 525.

[0034] Furthermore, the blank period extraction unit 160 may determine the minimum period based on the region including the field. For example, the green manure cultivation period 530 for green manure crops may differ depending on the region, such as a warm region or a cold region. For this reason, the blank period extraction unit 160 may hold information indicating the minimum period associated with the region, and extract from this information the minimum period associated with the region including the target field indicating the field corresponding to the candidate blank period 525.

[0035] Furthermore, the blank period extraction unit 160 may determine the minimum period based on both the time of the candidate blank period 525 and the area including the field. For example, the blank period extraction unit 160 may hold information indicating a minimum period associated with a time and an area, and extract from this information the time of the candidate blank period 525 and the minimum period associated with the area including the target field. Furthermore, the blank period extraction unit 160 may determine the minimum period using the cultivation calendar data 410 shown in FIG. 3. For example, the blank period extraction unit 160 may extract green manure crops that can be grown within the candidate blank period 525 in the area including the target field from the cultivation calendar data 410, and determine the minimum period among the cultivation periods of the extracted green manure crops as the minimum period.

[0036] Next, the blank period extraction unit 160 extracts blank periods 520 from the candidate blank periods 525 based on the determined minimum period. For example, the blank period extraction unit 160 extracts the candidate blank periods 525 during which no commercial crops are cultivated for a continuous period equal to or longer than the corresponding minimum period as the blank period 520. For example, the blank period extraction unit 160 extracts the candidate blank periods 525 that are longer than the corresponding minimum period as the blank period 520.

[0037] In step S130 of FIG. 6, the cultivation period determination unit 170 determines a candidate cultivation period representing a candidate for a period for cultivating a green manure crop based on the blank period 520. For example, the cultivation period determination unit 170 determines one or more candidate cultivation periods for one blank period 520. For example, as shown in FIG. 7, the cultivation period determination unit 170 determines a candidate cultivation period 535 for cultivating multiple types of green manure crops that can be cultivated in one blank period 520, such as oats, mustard, rye, and hairy vetch. For example, the cultivation period determination unit 170 determines the candidate cultivation period 535 based on the cultivation calendar data 410 that stores the cultivation calendar of the green manure crop. For example, the cultivation period determination unit 170 determines a green manure crop that can be cultivated in the blank period 520 based on the cultivation calendar data 410, extracts a cultivation period corresponding to the determined green manure crop from the cultivation calendar data 410, and determines the extracted cultivation period as the candidate cultivation period 535.

[0038] For example, in the first blank period 520-1 of "field A", the cultivation period determination unit 170 extracts a cultivable green manure crop from the cultivation calendar data 410. For example, the cultivation period determination unit 170 determines the cultivation period of the extracted "oats" as the first candidate cultivation period 535-1. Similarly, the cultivation period determination unit 170 determines the cultivation period of the extracted "rye" as the second candidate cultivation period 535-2, and determines the cultivation period of the extracted "hairy vetch" as the third candidate cultivation period 535-3. The cultivation period determination unit 170 similarly determines the cultivation periods of the cultivable green manure crops as the candidate cultivation periods 535 for the other blank periods 520, for example, the fifth blank period 520-5 of "field C" and the seventh blank period 520-7 of "field D" shown in FIG. 2.

[0039] In step S140 shown in Fig. 6, the cultivation period determination unit 170 determines a commercial work volume for a work period representing a period during which work is performed on green manure. The commercial work volume represents the amount of work performed according to a cultivation plan for one or more farm fields.

[0040] For example, as shown in FIG. 7, the cultivation period determination unit 170 determines a first sowing time 550-1 for sowing "oats" when cultivating "oats" as a green manure crop in "field A" based on the cultivation calendar data 410. For example, the cultivation calendar information of the cultivation calendar data 410 includes information indicating a calendar work period that is a period during which each task should be performed when cultivating "oats". The cultivation period determination unit 170 extracts a calendar work period during which sowing should be performed when cultivating "oats" as a green manure crop from the cultivation calendar information of the cultivation calendar data 410, and determines the extracted calendar work period as the first sowing time 550-1. The cultivation period determination unit 170 calculates the amount of work in one or more fields when cultivating a commercial crop according to the cultivation plan in the determined first sowing time 550-1 as a commercial work amount. The amount of work is determined based on, for example, the area of ​​the field in which the work is performed and the amount of work per unit area. The amount of work per unit area represents a fixed value that is set in advance depending on the work, and is determined, for example, from the history of work performed in the past. The amount of work per unit area may differ depending on the work machine used.

[0041] Similarly, the cultivation period determination unit 170 determines a first suppression time 560-1 in which suppression is performed to stabilize germination and early growth when cultivating "oats" as a green manure crop in "field A". The cultivation period determination unit 170 determines the commercial workload in the first suppression time 560-1. In addition, the cultivation period determination unit 170 determines the commercial workload in a first chopping time 570-1 in which the grown green manure crop, for example, "oats", is chopped, and the commercial workload in a first plowing time 580-1 in which the chopped green manure crop is plowed.

[0042] Similarly, the cultivation period determination unit 170 determines the amount of commercial work for the timing of each task, such as the sowing time 550, the compaction time 560, the chopping time 570, and the plowing time 580, when cultivating other green manure crops in "Field A." The cultivation period determination unit 170 also determines the amount of commercial work for the timing of each task, such as the sowing time 550, the compaction time 560, the chopping time 570, and the plowing time 580, when cultivating green manure crops in other fields, such as "Field C" and "Field D."

[0043] In step S150 of FIG. 6, the cultivation period determination unit 170 determines the green manure cultivation period 530 based on the determined commercial work volume. For example, the cultivation period determination unit 170 selects a candidate cultivation period 535 so that the total work volume does not exceed a threshold, and determines the selected candidate cultivation period 535 as the green manure cultivation period 530. Here, the total work volume represents the sum of the commercial work volume of work performed according to the cultivation plan during the work period and the green manure work volume of work performed in the cultivation of green manure crops. In this case, the green manure work volume represents the sum of the work volume of work performed on green manure in the target field during the work period and the work volume of work performed on green manure corresponding to the determined green manure cultivation period 530. The threshold represents the work volume that all workers performing work in one or more fields can perform during a given period, for example, in one day.

[0044] For example, the cultivation period determination unit 170 first determines the green manure cultivation period 530 in the blank period 520 that starts earliest. In the example shown in FIG. 2, for example, the cultivation period determination unit 170 determines the green manure cultivation period 530 for the first blank period 520-1 of "Field A". For example, the cultivation period determination unit 170 selects the candidate cultivation period 535 having the earliest end time among the candidate cultivation periods 535 determined in the first blank period 520-1. For example, in the example shown in FIG. 7, the cultivation period determination unit 170 selects the first candidate cultivation period 535-1 of "oats."

[0045] The cultivation period determination unit 170 extracts, from the selected candidate cultivation period 535, work periods in which work is performed in the target field, "field A", such as the first sowing period 550-1, the first compacting period 560-1, the first chopping period 570-1, and the first plowing period 580-1. The cultivation period determination unit 170 compares the total amount of work in the extracted work periods with a threshold value that represents the amount of work that the entire worker can perform. The total amount of work when the green manure cultivation period 530 is first determined represents the sum of the commercial work amount and the work amount of work performed with green manure in the target field, since there is no determined green manure cultivation period 530. For example, the total amount of work in the first sowing period 550-1 represents the sum of the commercial work amount in the first sowing period 550-1 and the work amount of sowing "oats" in "field A". When the total amount of work in each work period is equal to or less than a threshold, the cultivation period determination unit 170 determines the selected proposed cultivation period 535 as the green manure cultivation period 530.

[0046] When a first candidate cultivation period 535-1 has a total amount of work greater than the threshold, a second candidate cultivation period 535-2 with the second earliest end time is selected. The cultivation period determination unit 170 selects the candidate cultivation periods 535 in order of earliest end time, and searches for a candidate cultivation period 535 in which the total amount of work for each work period is equal to or less than the threshold. When there is no candidate cultivation period 535 in which the total amount of work for each work period is equal to or less than the threshold, the cultivation period determination unit 170 determines that there is no green manure cultivation period 530 for the blank period 520.

[0047] Next, the cultivation period determination unit 170 determines the green manure cultivation period 530 in the blank period 520 that starts second earliest. In the example shown in FIG. 2, for example, the cultivation period determination unit 170 determines the green manure cultivation period 530 for the fifth blank period 520-5 of "field C" in the same manner as the determination of the green manure cultivation period 530 for the first blank period 520-1 of "field A". In this case, the total amount of work in the work period of the fifth blank period 520-5 represents the sum of the amount of work performed on the green manure of "field C", the amount of work performed on the green manure of the determined "field A", and the amount of commercial work in the work period. For example, the total amount of work in the work period in which green manure crops are sown in "field C" represents the sum of the amount of work performed on the green manure crops in "field C", the amount of commercial work in this work period, and the amount of work on the green manure performed in "field A" in this work period. The cultivation period determination unit 170 determines, as the green manure cultivation period 530, a proposed cultivation period 535 in which the total amount of work in each work period is equal to or less than a threshold value that represents the amount of work that the workers as a whole can perform.

[0048] In this way, the cultivation period determination unit 170 determines the green manure cultivation period 530 in order of the earliest start time of the blank period 520. In this way, the cultivation period determination unit 170 determines the green manure cultivation period 530 in which the green manure work is performed without exceeding the workload of the entire workers.

[0049] In step S160 shown in Fig. 6, the output unit 180 outputs display information representing the green manure cultivation period 530 and the target farm field in association with each other to the terminal 200. The display information may represent an image representing one or more farm fields in association with the green manure cultivation period 530, as shown in Fig. 2, for example. The display information may further represent one or more farm fields in association with a commercial cultivation period 510 for work carried out according to the cultivation plan. The display information may represent green manure crops cultivated in each green manure cultivation period 530 in association with the corresponding green manure cultivation period 530.

[0050] 6, the display unit 250 of the terminal 200 displays the display information on the input / output device 210. A user, for example, a manager who manages work in one or more farm fields, can easily plan green manure by checking the display information.

[0051] (Modification) The above-described embodiments and modifications are merely examples, and the configurations described in each embodiment and modification may be arbitrarily modified and / or combined as long as the functions are not impaired. Furthermore, some of the functions described in the embodiments and modifications may be omitted as long as the necessary functions can be realized.

[0052] For example, in step S120 shown in Fig. 6, the minimum period determined by the blank period extraction unit 160 of the green manure management apparatus 100 may represent a possible period for green manure that can be determined by any method. For example, the minimum period may include a composting period during which sufficient decomposition of green manure occurs after the green manure crop is plowed in. The minimum period may also represent a fixed value, for example, three months, regardless of the time of the candidate blank period 525 and the area including the field.

[0053] Also, a green manure crop may be determined prior to step S120, and the blank period extraction unit 160 may determine the determined period during which green manure is possible as the minimum period. For example, a green manure crop may be determined by a user for each field. In this case, the blank period extraction unit 160 determines the period during which green manure is possible determined by the user as the minimum period in step S120, and extracts the blank period 520. Also, the cultivation period determination unit 170 determines the period during which the green manure crop determined by the user is cultivated as the green manure cultivation period 530 in step S150.

[0054] The effect of soil improvement varies depending on the type of green manure crop. For example, the Gramineae such as "oats" and "rye" increase the potassium and organic matter in the soil. The Brassicaceae such as "mustard" increase the nitrogen and organic matter in the soil. Furthermore, since "mustard" contains a substance that shows a bactericidal effect, it can suppress the occurrence of pests. The Legumes such as "hairy vetch" increase the nitrogen in the soil. The Gramineae and some Legumes suppress nematodes (pests). The Asteraceae improve the availability of phosphorus. For this reason, the user may select the effect of soil improvement caused by the green manure, and the blank period extraction unit 160 may determine the possible period of green manure that causes the selected effect of soil improvement as the minimum period in step S120. In this case, the cultivation period determination unit 170 determines the period for cultivating the green manure crop that causes the selected effect of soil improvement as the green manure cultivation period 530 in step S150. In addition, information relating the effect of soil improvement to the green manure crop that produces this effect may be stored in the memory device 140 of the green manure management device 100, for example, in the cultivation calendar data 410, or may be obtained from another device.

[0055] The effect of soil improvement caused by green manure may be determined based on the type of crop cultivated in the field corresponding to the blank period 520. For example, the blank period extraction unit 160 may determine based on the type of crop cultivated in the commercial cultivation period 510 that sandwiches the blank period 520. For example, the main contents of soil improvement, such as increasing nitrogen, increasing potassium, increasing organic matter in the soil, improving phosphorus availability, decreasing soil hardness, improving permeability, improving the microflora, and pest control, may differ depending on the cultivated crop. For this reason, for example, the blank period extraction unit 160 may determine the effect of soil improvement caused by green manure in the blank period 520 based on the type of crop cultivated in the commercial cultivation period 510 immediately after the blank period 520. In addition, since the nutrients of the soil consumed by the cultivation of the crop also differ depending on the crop, the blank period extraction unit 160 may determine the effect of soil improvement caused by green manure in the blank period 520 based on the type of crop cultivated in the commercial cultivation period 510 immediately before the blank period 520. In addition, the blank period extraction unit 160 may determine the effect of soil improvement caused by green manure using not only the type of crop cultivated during the commercial cultivation period 510 that sandwiches the blank period 520, but also the type of crop cultivated in the corresponding field.

[0056] The effect of soil improvement caused by green manure may also be determined based on information representing the soil condition measured in the field, such as the nitrogen content of the soil, the acidity of the soil, etc. For example, the blank period extraction unit 160 may acquire information representing the soil condition from a sensor installed in the field, and determine the effect of soil improvement caused by green manure based on the acquired information. In this case, the blank period extraction unit 160 determines the effect of soil improvement caused by green manure based on the difference between the ideal soil condition and the acquired information.

[0057] In step S150 of FIG. 6, the cultivation period determination unit 170 of the green manure management apparatus 100 may determine the green manure cultivation period 530 according to the priority set for the field. For example, the cultivation period determination unit 170 determines the green manure cultivation period 530 in the order of the blank period 520 in the field with the highest priority. The priority may be set in advance by the user. The priority of the field may also be determined based on the commercial crop cultivated in the field in the cultivation plan. For example, the user sets the priority of growing green manure for commercial crops, and the cultivation period determination unit 170 extracts the fields in which the crops with the priority set are cultivated from the cultivation plan stored in the cultivation plan data 400, and determines the priority of the extracted fields. The cultivation period determination unit 170 may also determine the priority of the fields in which green manure is grown according to the area of ​​the field. For example, the cultivation period determination unit 170 may set the priority so that the larger the area of ​​the field, the higher the priority. The cultivation period determination unit 170 may set a higher priority for a field having a smaller area. The cultivation period determination unit 170 may determine the priority for a field by combining a plurality of methods described in the embodiment and the modified examples.

[0058] For example, the cultivation period determination unit 170 may determine the priority order of fields for green manure based on the crops cultivated in the fields in the cultivation plan and the area of ​​the fields. In this case, in step S150 of FIG. 6, the cultivation period determination unit 170 classifies fields into one or more priority field groups according to the types of crops cultivated in the fields in the cultivation plan. For example, the cultivation period determination unit 170 may classify fields into priority field groups according to the types of crops cultivated immediately after the blank period 520. For example, in the example shown in FIG. 2, the cultivation period determination unit 170 classifies "field C" and "field D", which cultivate "black soybeans" immediately after the blank period 520, into the same priority field group. Also, "field A" is classified into the priority field group for cultivating "wheat" immediately after the blank period 520. Here, if the user sets the priority of the fields cultivating "black soybeans" higher than the priority of the fields cultivating "wheat", the cultivation period determination unit 170 prioritizes "field C" and "field D" included in the group of priority fields cultivating "black soybeans" when determining the green manure cultivation period 530. Furthermore, when the area of ​​"field D" is larger than the area of ​​"field C", the cultivation period determination unit 170 prioritizes "field D" when determining the green manure cultivation period 530.

[0059] In step S150 shown in Fig. 6, an example has been shown in which the cultivation period determination unit 170 selects the candidate cultivation period 535 according to the end time of the candidate cultivation period 535, but one candidate cultivation period 535 may be selected by any method. For example, the cultivation period determination unit 170 may select one candidate cultivation period 535 from the candidate cultivation periods 535 determined in the blank period 520 in accordance with the priority order of green manure crops to determine the green manure cultivation period 530. For example, the priority order of green manure crops is set in advance by a user, and the cultivation period determination unit 170 selects the candidate cultivation period 535 corresponding to a green manure crop with a high priority order to determine the green manure cultivation period 530.

[0060] In step S150 shown in FIG. 6, the cultivation period determination unit 170 may determine the work period of the work to be performed in the field during the green manure cultivation period 530, such as the sowing time 550 and the plowing time 580. For example, in the cultivation calendar information stored in the cultivation calendar data 410, the calendar work period is set to be longer than the period of the work actually performed in the field. For this reason, the cultivation period determination unit 170 determines the work period that represents the period during which the work should be performed in the target field among the calendar work periods represented in the cultivation calendar information. For example, the cultivation period determination unit 170 determines the work period according to the area of ​​the target field in which the green manure is to be grown. For example, the cultivation period determination unit 170 determines the work period based on the amount of work per unit area, such as the work time, and the area of ​​the target field. For example, the cultivation period determination unit 170 determines the work period based on the amount of work per unit area, such as the work time, and the area of ​​the target field. For example, the cultivation period determination unit 170 determines the period of the work to be performed when the work starts in the target field from the start point of the calendar work period as the work period. When the total amount of work in the determined work period is greater than the threshold, the cultivation period determination unit 170 corrects the work period to one with a shifted start time, and compares the total amount of work in the work period with the threshold. When the total amount of work in the work period does not become equal to or less than the threshold even after correcting the end time of the work period to reach the end time of the calendar work period, the cultivation period determination unit 170 determines that green manure cannot be grown in the corresponding proposed cultivation period 535.

[0061] Furthermore, the cultivation period determination unit 170 may use any method to determine the work period and the green manure cultivation period 530. For example, the cultivation period determination unit 170 may select, from among all combinations of the green manure cultivation period 530 and the work period, a combination that maximizes the area in which green manure is grown, and determine the green manure cultivation period 530 and the work period for the selected combination.

[0062] The cultivation period determination unit 170 may also determine the green manure cultivation period 530 without using the total amount of work in the work period. In this case, the cultivation period determination unit 170 selects one candidate cultivation period 535 for one blank period 520 by any method, and determines the selected candidate cultivation period 535 as the green manure cultivation period 530. For example, the cultivation period determination unit 170 determines the candidate cultivation period 535 having the earliest end time among one or more candidate cultivation periods 535 as the green manure cultivation period 530. In addition, the cultivation period determination unit 170 may select one candidate cultivation period 535 from the candidate cultivation periods 535 determined for the blank period 520 according to the priority order of green manure crops, and determine the selected candidate cultivation period 535 as the green manure cultivation period 530. In this case, the processing of step S140 may be omitted.

[0063] For example, a part or all of the processing of the green manure management device 100 may be executed by the terminal 200. Also, a part or all of the processing of the terminal 200 may be executed by the green manure management device 100. The green manure management program 420 may include a display program 430. The green manure management system 1000 does not include the terminal 200, and may cause an external terminal not included in the green manure management system 1000 to display display information.

[0064] (Additional Note) The green manure management method, green manure management system, and green manure management program described in each embodiment can be described as follows.

[0065] The green manure management method according to the first aspect includes: Extracting a blank period during which no crop is cultivated in one or more farm fields based on a cultivation plan for the one or more farm fields; Determining a green manure cultivation period in which a green manure crop is cultivated based on the extracted blank period; Includes.

[0066] The green manure management method according to the second aspect is the green manure management method according to the first aspect, Extracting the blank period includes: determining a minimum duration based on at least one of a timing of the blank period and an area of ​​the one or more fields; extracting, as the blank period, a period during which no crop is cultivated in the one or more farm fields for a continuous period equal to or longer than the minimum period; Includes.

[0067] A green manure management method according to a third aspect is a green manure management method according to the second aspect, The minimum period represents a period equal to or greater than the cultivation period from sowing to plowing in of the green manure crop.

[0068] A green manure management method according to a fourth aspect is a green manure management method according to any one of the first to third aspects, Determining the green manure cultivation period Determining a period during which work will be carried out in the one or more fields in the cultivation of the green manure crop. Includes.

[0069] A green manure management method according to a fifth aspect is a green manure management method according to the fourth aspect, Determining the work period includes: Based on the amount of commercial work carried out in accordance with the cultivation plan in the one or more farm fields and the amount of work carried out in the cultivation of the green manure crop in the target farm field corresponding to the blank period, the work period is determined so that the total amount of work in the work period does not exceed a threshold value. Includes.

[0070] A green manure management method according to a sixth aspect is a green manure management method according to the fifth aspect, Determining the work period includes: When the total amount of work exceeds a threshold, the work period is determined by giving priority to a field having a high priority for cultivating the green manure crop in the target field. Includes.

[0071] A green manure management method according to a seventh aspect is a green manure management method according to the sixth aspect, Determining the priority order based on the type of crop cultivated in the target field. Further includes:

[0072] A green manure management method according to an eighth aspect is a green manure management method according to any one of the first to seventh aspects, Determining the green manure cultivation period In the target field having the blank period, the green manure crop to be cultivated in the target field is determined according to the effect of soil improvement caused by the green manure. Includes.

[0073] A green manure management method according to a ninth aspect is a green manure management method according to any one of the first to eighth aspects, Displaying a display image showing the green manure cultivation period of the green manure crop in association with a farm field in which the green manure crop is cultivated. Further includes:

[0074] The green manure management system according to the tenth aspect is a blank period extraction unit that extracts a blank period during which no crop is cultivated in one or more fields based on a cultivation plan for the one or more fields; A cultivation period determination unit that determines a green manure cultivation period for cultivating a green manure crop based on the extracted blank period; Equipped with.

[0075] A green manure management program according to an eleventh aspect, Extracting a blank period during which no crop is cultivated in one or more farm fields based on a cultivation plan for the one or more farm fields; Determining a green manure cultivation period in which a green manure crop is cultivated based on the extracted blank period; The calculation device executes the following. [Explanation of symbols]

[0076] 1, 2: Storage medium 20: Network 100: Green manure management device 110: Input / Output device 120: Arithmetic device 130: Communication equipment 140: Storage device 150: Data storage unit 160: Blank period extraction section 170: Cultivation Period Decision Unit 180: Output section 200: Terminal 210: Input / Output device 220: Arithmetic device 230:Communication equipment 240: Storage device 250:Display section 400: Cultivation plan data 410: Cultivation calendar data 420: Green manure management program 430: Display program 510: Commercial cultivation period 520: Blank Period 525: Blank Candidate Period 530: Green manure cultivation period 535: Cultivation candidate period 550: Sowing time 560: Time of suppression 570: Shredding time 580: Plowing period 1000: Green manure management system

Claims

1. Extracting a blank period during which no crop is cultivated in one or more fields based on a cultivation plan for the one or more fields; Determining a green manure cultivation period in which a green manure crop is cultivated based on the extracted blank period; Green manure management methods including:

2. Extracting the blank period includes: determining a minimum period based on at least one of a timing of the blank period and an area of ​​the one or more fields; extracting, as the blank period, a period during which no crop is cultivated in the one or more farm fields for a continuous period equal to or longer than the minimum period; The method for managing green manure according to claim 1, comprising:

3. The minimum period represents a period equal to or longer than the cultivation period from sowing to plowing of the green manure crop. The method for managing green manure according to claim 2.

4. Determining the green manure cultivation period Determining a work period for cultivating the green manure crop in the one or more fields. The method for managing green manure according to claim 1, comprising:

5. Determining the work period includes: Based on the amount of commercial work carried out in accordance with the cultivation plan in the one or more farm fields and the amount of work carried out in the cultivation of the green manure crop in the target farm field corresponding to the blank period, the work period is determined so that the total amount of work in the work period does not exceed a threshold value. The method for managing green manure according to claim 4, comprising:

6. Determining the work period includes: When the total amount of work exceeds a threshold, the work period is determined by giving priority to a field having a high priority for cultivating the green manure crop in the target field. The method for managing green manure according to claim 5, comprising:

7. Determining the priority order based on the type of crop cultivated in the target field. The method for managing green manure according to claim 6, further comprising:

8. Determining the green manure cultivation period In the target field having the blank period, the green manure crop to be cultivated in the target field is determined according to the effect of soil improvement caused by the green manure. The method for managing green manure according to any one of claims 1 to 7, comprising:

9. Displaying a display image showing the green manure cultivation period of the green manure crop in association with a farm field in which the green manure crop is cultivated. The method for managing green manure according to any one of claims 1 to 7, further comprising:

10. a blank period extraction unit that extracts a blank period during which no crop is cultivated in one or more fields based on a cultivation plan for the one or more fields; A cultivation period determination unit that determines a green manure cultivation period for cultivating a green manure crop based on the extracted blank period; A green manure management system equipped with

11. Extracting a blank period during which no crop is cultivated in one or more fields based on a cultivation plan for the one or more fields; Determining a green manure cultivation period in which a green manure crop is cultivated based on the extracted blank period; A green manure management program that causes a computing device to execute the above.

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