Harvest management method, harvest management system, and harvest management program

Abstract

To provide a harvesting management method, system and program which can accurately estimate information about a planting quantity of crops grown in a farm field before planting the crops.SOLUTION: In a harvesting management system, a harvesting management device 100 comprises: a data storage unit 150 which calculates a locus of a work device 30 on the basis of operation information of the acquired work device 30; a work determination unit 160 which extracts a work locus of the work device 30 from the locus; a ridge detection unit 170 which detects a ridge length of the ridge based on the extracted work locus; a notification unit 250 which displays an image of the work locus indicating the ridge and receives a selection operation of a target ridge; a ridge selection unit 180 which specifies the target ridge selected by the notification unit 250; and a planting quantity estimation unit 190 which estimates the number of stubs of planting crops of the target ridge based on an inter-rootstock length and the ridge length, estimates an expected planting quantity of crops and an expected yield based on the number of stubs of crops planted in the target ridge, and outputs information on the expected planting quantity to the notification unit 250 of a terminal 200.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] In recent years, there has been research into the analysis of cultivation management using information on work carried out in farm fields.

[0003] Patent Document 1 discloses a technology that estimates the expected crop yield from various information about each ridge, such as ridge length and planting amount, based on operational information when a work machine plants crops in the ridges formed in a field. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-18542 Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, contract farming has been on the rise, and farmers are required to calculate target yields based on the field area, furrow spacing, plant spacing, planting amount per unit area, etc., and to deliver crops with the calculated target yield. However, the yield of crops that are actually cultivated and harvested cannot be calculated simply from the field area, due to the influence of specific cultivation methods, such as the shape of the field and the shape of the headland. In addition, the expected yield needs to be calculated before the contract is signed, and so the expected yield needs to be calculated before the crops are planted.

[0006] In contract cultivation, the planting amount may be used instead of the target yield. This planting amount is also calculated based on the area of ​​the field, the furrow spacing, the spacing between plants, the planting amount per unit area, etc., but the planting amount that is actually planted cannot be calculated simply from the area of ​​the field due to the influence of the specific cultivation method, for example, the shape of the field and the shape of the headland. In addition, since the expected planting amount to be planted needs to be calculated before the contract is made, the expected planting amount needs to be calculated before the crop is planted.

[0007] In view of the above circumstances, one of the objects of the present disclosure is to accurately estimate information regarding the planting amount of a crop to be cultivated in a field before the crop is planted, such as an expected planting amount, an expected yield, etc. Other objects can be understood from the following description and the explanation of the embodiment. [Means for solving the problem]

[0008] 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.

[0009] To achieve the above object, a harvest management method according to one embodiment includes detecting a length of a ridge (420) in a field (400) based on position information representing a path (410) traveled by a working implement (30) that performed work in the field (400). The harvest management method also includes estimating information regarding a planting amount of a crop to be cultivated in the field (400) based on the ridge (420) and a spacing (431) of a crop to be planted in the ridge (420). The harvest management method also includes outputting the information regarding the planting amount.

[0010] A harvest management system (1000) according to one embodiment for achieving the above object includes a ridge detection unit (170) and a planting amount estimation unit (190). The ridge detection unit (170) detects the length of a ridge (420) in the field (400) based on position information indicating a path (410) traveled by a work implement (30) performing work in the field (400). The planting amount estimation unit (190) estimates information regarding the planting amount of a crop to be cultivated in the field (400) based on the length of the ridge (420) and the spacing (431) of a crop to be planted in the ridge (420), and outputs the information regarding the estimated planting amount.

[0011] To achieve the above object, a harvest management program (310) according to one embodiment causes the calculation device (120) to detect the length of a ridge (420) in a field (400) based on position information indicating a path (410) traveled by a working implement (30) that performed work in the field (400). The harvest management program (310) also causes the calculation device (120) to estimate information related to the planting amount of a crop to be cultivated in the field (400) based on the ridge (420) and a spacing (431) of a crop to be planted in the ridge (420). The harvest management program (310) also causes the calculation device (120) to output information related to the planting amount. Effect of the Invention

[0012] According to the above aspect, it is possible to accurately estimate information regarding the planting amount of a crop to be harvested in a farm field before the crop is planted. [Brief description of the drawings]

[0013] [Figure 1] 1 is a configuration diagram of a harvest management system in one embodiment. [Diagram 2] 5A and 5B are diagrams for explaining a trajectory and ridges of a working device in one embodiment. [Diagram 3] FIG. 2 is a diagram showing functional blocks executed by a harvest management system in one embodiment. [Figure 4]1 is a flowchart illustrating processing by a harvest management system in one embodiment. [Diagram 5] A figure for explaining the operation of a user selecting a target ridge in one embodiment. [Figure 6] FIG. 2 is a diagram for explaining ridges in one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] (Embodiment) A harvest 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, harvest management system 1000 includes harvest management apparatus 100 and terminal 200. Harvest management apparatus 100 is communicatively connected to terminal 200 and working apparatus 30 via network 20, for example the Internet. Working apparatus 30 is, for example, a tractor equipped with a ridge-making implement.

[0015] The working device 30 includes a positioning device, for example, a GNSS (Global Navigation Satellite System) receiver, and acquires position information that indicates the position at each time. Therefore, the position information indicates a trajectory 410 that the working device 30 has moved in a farm field 400, as shown in FIG. 2. When the working device 30 moves along a ridge 420 before planting a crop, for example, when performing ridge formation work, the working device 30 moves in a straight line to perform the ridge formation work. Furthermore, when the working device 30 reaches the edge of the farm field 400, it stops the ridge formation work once, changes its direction of travel, and then moves in a straight line to perform the ridge formation work. Therefore, the trajectory 410 includes, for example, one or more straight trajectories 411 formed in a straight line and one or more turning trajectories 412 formed by a curve.

[0016] The harvest management system 1000 estimates information about the planting amount in the field 400, such as the expected planting amount and expected yield, based on a work trajectory, such as a straight trajectory 411, that the work device 30 moves along while working in the field 400 out of the trajectory 410. For example, the harvest management system 1000 detects ridges 420 based on the straight trajectory 411, and estimates information about the planting amount based on ridge length 421 indicating the length of the detected ridges 420 and the spacing between plants of the crop to be planted in the ridges 420.

[0017] In this way, the harvest management system 1000 estimates information about the planting amount before performing the planting work of planting the crop. For example, a worker who cultivates in the farm field 400 can determine whether or not a set amount such as the planting amount of the crop and the target yield can be achieved by estimating information about the planting amount before the planting work.

[0018] (Harvest management system configuration) The configuration of the harvest management apparatus 100 will be described. As shown in FIG. 1, the harvest management apparatus 100 includes an input / output device 110, a calculation device 120, a communication device 130, and a storage device 140. The harvest management apparatus 100 is, for example, a computer. Information for the calculation device 120 to execute processing is input to the input / output device 110. The input / output device 110 also 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.

[0019] The communication device 130 is electrically connected to the network 20 and communicates with each device via the network 20. The communication device 130 transfers position information acquired from the operation device 30 to the arithmetic device 120. The communication device 130 also transfers a signal generated by the arithmetic device 120 to the terminal 200. The communication device 130 includes various interfaces, such as a network interface card (NIC) and a universal serial bus (USB).

[0020] The storage device 140 stores various data for estimating information related to the planting amount of a crop to be planted, such as operation data 300, and a harvest management program 310. The storage device 140 is used as a non-transitory tangible storage medium for storing the harvest management program 310. The harvest management program 310 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.

[0021] The operation data 300 stores various information, such as position information, that indicates the operating state of the working device 30. The operation data 300 includes information that indicates, for example, the speed, steering angle, engine speed, ON / OFF status of various clutches, position information of the working device 30 at each time, and working period of the working device 30. When the working device 30 is a vehicle that pulls a working machine, such as a tractor, the operation information may include information such as a PTO (power take-off) speed when transmitting power to the working machine, and a hitch height and a lift arm angle that indicate the attitude of the working machine. The operation data 300 may include operation information acquired from the working device 30, such as position information of the working device 30, and may include various information calculated from the operation information.

[0022] The arithmetic device 120 reads out and executes the harvest management program 310 from the storage device 140, and performs various data processing to estimate information regarding the planting amount of the crop to be planted. For example, the arithmetic device 120 includes a central processing unit (CPU) and the like.

[0023] The arithmetic device 120 reads and executes the harvest management program 310, thereby implementing a data storage unit 150, a work determination unit 160, a ridge detection unit 170, a ridge selection unit 180, and a planting amount estimation unit 190, as shown in FIG. 3. The data storage unit 150 acquires operation information from the work device 30 and stores various information in the operation data 300. The work determination unit 160 determines the position where the work device 30 is performing the work, for example, the work trajectory that the work device 30 moved while performing the work, among the trajectory 410 that the work device 30 moved. For example, the work trajectory represents the path that the work device 30 moved along the ridge 420, and corresponds to the ridge 420. The ridge detection unit 170 detects information about the ridge 420 of the field 400, for example, the ridge length 421, based on the work trajectory. The ridge selection unit 180 acquires ridge information representing a target ridge for which information on the planting amount of a crop is to be estimated from among the detected ridges 420. The planting amount estimation unit 190 estimates information on the planting amount of a crop to be cultivated in the target ridge, for example, an expected planting amount.

[0024] Next, the configuration of the terminal 200 will be described. As shown in FIG. 1, 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 electrically connected to the network 20 and communicates with each device via the network 20. The communication device 230 transfers signals acquired from the harvest management device 100 to the calculation device 220. The communication device 230 also transfers signals generated by the calculation device 220 to the harvest management device 100. 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 (Universal Serial Bus).

[0026] The storage device 240 stores various data for reporting information related to the estimated crop planting amount, for example, a reporting program 320. The storage device 240 is used as a non-transitory tangible storage medium for storing the reporting program 320. The reporting program 320 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 device 220 reads and executes the notification program 320, thereby implementing a notification unit 250 in cooperation with the input / output device 210, as shown in Fig. 3. The notification unit 250 acquires information relating to the planting amount of the crop from the harvest management apparatus 100, and displays the acquired crop information on the input / output device 210.

[0028] (Operation of harvest management system) When the working device 30 shown in Fig. 1 works in the field 400, it transmits operation information to the arithmetic device 120 of the harvest management apparatus 100. For example, when the engine is stopped, the working device 30 transmits operation information from when the engine is started to when it is stopped to the arithmetic device 120 of the harvest management apparatus 100. When the arithmetic device 120 receives the operation information of the working device 30, it reads and executes a harvest management program 310. When the harvest management program 310 is read and executed, the arithmetic device 120 starts the process shown in Fig. 4, which is part of the harvest management method.

[0029] In step S110, the data storage unit 150 realized by the calculation device 120 acquires operation information of the working device 30. Furthermore, the data storage unit 150 calculates a trajectory 410 of the working device 30 based on the acquired operation information. The calculated trajectory 410 is stored in the operation data 300.

[0030] In step S120, the work determination unit 160 extracts a work trajectory along which the working device 30 performed work from the trajectory 410. For example, as shown in FIG. 2, the work determination unit 160 extracts, from the trajectory 410, a straight trajectory 411 along which the working device 30 moved in a straight line as the work trajectory. Furthermore, the work determination unit 160 may extract, from the straight trajectory 411, a trajectory along which the speed of the working device 30 is equal to or lower than a threshold as the work trajectory. Furthermore, the work determination unit 160 may extract, based on the operation information of the working device 30, a trajectory during a period in which work is being performed as the work trajectory. For example, the work determination unit 160 determines that a period in which the working machine towed by the working device 30 is lowered is a period in which the working device 30 is performing work. The work determination unit 160 extracts, from the trajectory 410, a trajectory corresponding to a period in which it is determined that work is being performed as the work trajectory. Note that the straight trajectory 411 along which the working device 30 moved in a straight line may represent, for example, a trajectory in which the change in the traveling direction of the working device 30 is within 5 degrees in a predetermined period.

[0031] In step S130 shown in FIG. 4, the ridge detection unit 170 detects the ridge length 421 of the ridge 420 based on the extracted work trajectory. For example, the ridge detection unit 170 detects the ridge 420 based on the extracted work trajectory, as shown in FIG. 2. For example, the ridge 420 is detected as an area along the straight-line trajectory 411, which is the work trajectory. The ridge detection unit 170 calculates the ridge length 421 of the detected ridge 420, for example, the length in the direction in which the straight-line trajectory 411 extends. The ridge detection unit 170 may detect the length of the work trajectory, for example the length of the straight-line trajectory 411, as the ridge length 421. The ridge detection unit 170 may also calculate the smallest rectangle that includes the work trajectory, and detect the length of the long side of the calculated rectangle as the ridge length 421.

[0032] The ridge detection unit 170 outputs information representing the detected ridge 420 to the notification unit 250 of the terminal 200. The information representing the ridge 420 may include the track 410.

[0033] In step S140 shown in FIG. 4, the notification unit 250 of the terminal 200 displays information representing the ridge 420, for example, an image representing a work track, and accepts a selection operation of a target ridge by the user. The notification unit 250 displays an image representing a track 410 on the input / output device 210 as shown in FIG. 5. The user performs an operation to select a target ridge representing a target for which an expected yield of a crop is to be estimated from the ridges 420 in the image displayed on the input / output device 210. For example, the user inputs into the input / output device 210 an input line 500 that intersects with a work track corresponding to the target ridge for which an expected yield of a crop is to be estimated, for example, a straight track 411. The notification unit 250 transmits input information representing the input input line 500 to the ridge selection unit 180 of the harvest management device 100.

[0034] In step S150 shown in FIG. 4, the ridge selection unit 180 of the harvest management apparatus 100 identifies the selected target ridge based on the input information acquired from the notification unit 250. For example, the ridge selection unit 180 extracts a work trajectory, such as the straight trajectory 411, that intersects with the input line 500. In the example of FIG. 5, the ridge selection unit 180 extracts the first straight trajectory 411-1, the second straight trajectory 411-2, the third straight trajectory 411-3, and the fourth straight trajectory 411-4 that intersect with the input line 500 as target trajectories. The ridge selection unit 180 determines that the ridge 420 corresponding to the extracted target trajectory has been selected. In the example of FIG. 5, since the fifth straight trajectory 411-5 does not intersect with the input line 500, the ridge selection unit 180 determines that the fifth straight trajectory 411-5 has not been selected.

[0035] In step S160 shown in FIG. 4, the planting amount estimation unit 190 estimates information on the planting amount in the selected target ridge, such as the expected planting amount and expected yield, based on the ridge length 421. First, the planting amount estimation unit 190 acquires the spacing 431 of the crop to be planted in the ridge 420. The spacing 431 represents the distance between two adjacent crops 430 when planted in the ridge 420, as shown in FIG. 6. The spacing 431 is stored in advance in, for example, the data storage unit 150. The spacing 431 may also be input to the notification unit 250 of the terminal 200 along with the input line 500.

[0036] Next, the planting amount estimation unit 190 estimates the number of plants of the crop 430 to be planted in the target ridge based on the spacing 431 and the ridge length 421. The planting amount estimation unit 190 estimates the number of plants of the crop 430 to be planted in the target ridge by dividing the ridge length 421 by the spacing 431. The planting amount estimation unit 190 may also estimate the number of plants of the crop 430 to be planted in the target ridge based on the spacing 431, the ridge length 421, and an edge distance 432 from the end of the ridge 420 to the crop 430 to be planted at the edge. For example, the planting amount estimation unit 190 calculates the planting distance at which the crop 430 is planted by subtracting the edge distance 432 from the ridge length 421. The planting amount estimation unit 190 estimates the number of plants of the crop 430 to be planted in the target furrow by dividing the calculated planting distance by the plant spacing 431.

[0037] Next, the planting amount estimation unit 190 estimates the expected planting amount of the crop 430 based on the number of plants of the crop 430 to be planted in the target ridge. For example, the planting amount estimation unit 190 estimates the number of plants of the crop 430 to be planted in the target ridge as the expected planting amount. Furthermore, when multiple crops 430 are planted in one plant, the planting amount estimation unit 190 estimates the expected planting amount of the crop 430 by integrating the number of plants of the crop 430 and the planting amount per plant. In this case, the planting amount per plant is stored in advance in, for example, the data storage unit 150. Furthermore, the planting amount per plant may be input to the notification unit 250 of the terminal 200 along with the input line 500.

[0038] Next, the planting amount estimation unit 190 estimates the expected yield of the crop 430 to be harvested in the target ridge based on the number of plants of the crop 430 planted in the target ridge. For example, the planting amount estimation unit 190 estimates the expected yield of the crop 430 by multiplying the number of plants of the crop 430 and the average yield per plant. The average yield per plant is stored in advance, for example, in the data storage unit 150. The average yield per plant may also be input to the notification unit 250 of the terminal 200 along with the input line 500.

[0039] The planting amount estimation unit 190 outputs information on the estimated planting amount, such as information indicating the number of plants to be planted in the target furrow, the expected planting amount, the expected yield, etc., to the notification unit 250 of the terminal 200. The information on the planting amount indicates, for example, information corresponding to set amounts such as the planting amount and yield set in the cultivation contract.

[0040] In step S170, the notification unit 250 of the terminal 200 notifies information regarding the planting amount of the crop to be planted in the target ridge based on the information regarding the planting amount. For example, the notification unit 250 displays the expected planting amount of the crop to be planted in the target ridge on the input / output device 210. The notification unit 250 may also display the expected yield of the crop to be planted in the target ridge on the input / output device 210. The notification unit 250 may also display the number of plants of the crop to be planted in the target ridge on the input / output device 210.

[0041] The notification unit 250 may also notify the result of comparing information on the planting amount, such as the expected planting amount and expected yield, with a set amount set in a cultivation contract, such as the planting amount and target yield. When information on the estimated planting amount, such as the expected yield, is less than a set amount, such as a target yield, the notification unit 250 notifies that the set amount has not been reached. For example, when information on the estimated planting amount, such as the expected yield, is less than a set amount, such as a target yield, the notification unit 250 displays the information on the planting amount in red. The set amount indicates a target amount when cultivating a crop, such as a yield, planting amount, number of plants, etc. set in a cultivation contract.

[0042] In this way, the harvest management system 1000 estimates information regarding the planting amount based on the position information of the work implement 30 that performed the work before planting the crop.

[0043] (Modification) The configuration described in the embodiment is an example, and the configuration can be changed as long as the function is not impaired. For example, the position information of the operating device 30 included in the operation data 300 shown in Fig. 1 may be acquired by any method as long as it can represent the position of the operating device 30. The position information of the operating device 30 may be acquired from a mobile terminal that moves together with the operating device 30, such as a mobile phone of the worker.

[0044] In step S140 shown in FIG. 4, the notification unit 250 of the terminal 200 may accept a selection operation of a target ridge for which information on the planting amount is to be estimated, in any manner. For example, the notification unit 250 may accept an operation in which the user selects one or more work trajectories corresponding to the target ridges. The notification unit 250 may also display only a work trajectory, for example, a straight trajectory 411, without displaying the trajectory 410 shown in FIG. 5. The notification unit 250 may display information representing the detected ridge 420, for example, the area of ​​the ridge 420.

[0045] 5 is not limited to a straight line segment, but may include any line, for example a curved line. The input line 500 may include a plurality of lines.

[0046] The above-described embodiment and modified examples are merely examples, and the configurations described in each embodiment and modified example may be arbitrarily modified and / or arbitrarily combined as long as the functions are not impaired. Furthermore, some of the functions described in the embodiment and modified examples may be omitted as long as the necessary functions can be realized. For example, the harvest management system 1000 may estimate information regarding the planting amount cultivated in all ridges 420 included in the field 400 without the user selecting the target ridge. In this case, step S140 shown in FIG. 4 is omitted, and in step S150, the ridge selection unit 180 identifies all ridges 420 included in the field 400 as target ridges.

[0047] Furthermore, the ridge selection unit 180 shown in Fig. 3 may be realized by the terminal 200. In this case, in step S140 shown in Fig. 4, the notification unit 250 of the terminal 200 outputs input information representing the input line 500 to the ridge selection unit 180 realized by the terminal 200. In step S150, the ridge selection unit 180 identifies a target ridge based on the input information, and outputs ridge information representing the identified target ridge to the planting amount estimation unit 190 of the harvest management device 100. The ridge information may represent a work trajectory corresponding to the target ridge.

[0048] 3, for example, part of the processing in step S170, may be executed by the planting amount estimating unit 190 of the harvest management apparatus 100. For example, the planting amount estimating unit 190 may compare information relating to the estimated planting amount with a set amount. In this case, the planting amount estimating unit 190 outputs comparison information indicating the result of comparing the information relating to the estimated planting amount with the set amount to the reporting unit 250 of the terminal 200.

[0049] The notification unit 250 may notify only one piece of information, for example, only the expected planting amount, as the information on the planting amount. In this case, the planting amount estimation unit 190 may calculate only the expected planting amount and output information representing the calculated planting amount. The piece of information may be the number of plants or the expected yield.

[0050] 1 does not need to include terminal 200. All or a part of the processing of harvest management apparatus 100 may be executed by terminal 200. All or a part of the processing of terminal 200 may be executed by harvest management apparatus 100. Terminal 200 may be incorporated in work apparatus 30. Harvest management program 310 may include notification program 320. [Explanation of symbols]

[0051] 1, 2: Storage medium 20: Network 30: Work equipment 100: Harvest management device 110: Input / Output device 120: Arithmetic device 130: Communication equipment 140: Storage device 150: Data storage unit 160: Work judgment section 170: Ridge detection unit 180: Ridge selection section 190: Planting amount estimation section 200: Terminal 210: Input / Output device 220: Arithmetic device 230:Communication equipment 240: Storage device 250: Information Department 300: Operational data 310: Harvest Management Program 320: Information Program 400: Field 410: Orbit 411: Straight track (work track) 412: Circling Orbit 420: ridge 421: Ridge length 430: Crops 431: Interplant length 432: Edge distance 500: Input line (input information) 1000: Harvest Management System

Claims

1. A method for detecting a length of a ridge in a farm field based on position information representing a trajectory of a working implement that has performed work in the farm field; estimating information regarding the planting amount of the crop to be cultivated in the field based on the length of the ridge and the spacing between plants of the crop to be planted in the ridge; Outputting information regarding the planting amount; acquiring ridge information representing a target ridge among the ridges in the farm field; Including, Estimating information about the planting amount of the crop includes: Estimating information regarding the planting amount of the crop cultivated in the target furrow. Including, The acquiring of the ridge information includes: obtaining input information representing an input line to be input to an image representing the trajectory; Extracting a work trajectory along which the work device moves while performing work from the trajectories; Extracting a target trajectory that intersects with the input line from the work trajectory; acquiring the ridge information representing a ridge corresponding to the target trajectory; Harvest management methods including:

2. The harvest management method according to claim 1 , further comprising outputting comparison information representing a result of comparing the information regarding the planting amount with a set amount.

3. a ridge detection unit that detects the length of a ridge in a field based on position information that represents a trajectory of movement of a working device that has performed work in the field; a planting amount estimation unit that estimates information regarding the planting amount of the crop to be cultivated in the field based on the length of the ridge and the spacing between plants of the crop to be planted in the ridge, and outputs the information regarding the estimated planting amount; a notification unit that displays an image representing the trajectory and receives input information representing an input line to be input to the image; a ridge selection unit that extracts a target trajectory that intersects with the input line from among the work trajectories traveled by the working device while performing work, and acquires ridge information that represents a ridge corresponding to the target trajectory; Equipped with The notification unit displays the ridge information. Harvest management system.

4. Detecting the length of a ridge in a farm field based on position information representing a trajectory of a working implement that has performed work in the farm field; estimating information regarding the planting amount of the crop to be cultivated in the field based on the length of the ridge and the spacing between plants of the crop to be planted in the ridge; Outputting information regarding the planting amount; acquiring ridge information representing a target ridge among the ridges in the farm field; and causing a computing device to execute the following: Estimating information about the planting amount of the crop includes: Estimating information regarding the planting amount of the crop cultivated in the target furrow. Including, The acquiring of the ridge information includes: obtaining input information representing an input line to be input to an image representing the trajectory; Extracting a work trajectory along which the work device moves while performing work from the trajectories; Extracting a target trajectory that intersects with the input line from the work trajectory; obtaining the ridge information indicative of ridges relative to the target trajectory; Harvest management programs, including:

Images