Agricultural operation assistance method, agricultural operation assistance system, and program

Abstract

The invention provides an agricultural operation assistance method, an agricultural operation assistance system, and a program, which reflect the influence of the flow of irrigation water in a field when determining the input amount of an input in the field. The agricultural operation assistance method includes the steps of: generating area input information indicating input amounts of input objects for a plurality of areas of a field on the basis of access position information relating to positions of a water port and a water tail of irrigation water provided in the field filled with the irrigation water; and outputting output information related to the generated area input information. In addition, the step of generating the area input information sometimes also comprises the following steps: for each of the plurality of areas, on the basis of the relative position of the area with respect to the water gap and the water tail indicated by the access position information, determining a correction coefficient corresponding to the increase or decrease of the amount of the input object retained in the area with respect to the amount of the input object input into the area; and determining an input amount of the input to the plurality of regions on the basis of the correction coefficient and a reference input amount of the input to the plurality of regions.

Description

Technical Field

[0001] The present invention relates to an agricultural operation assistance method, an agricultural operation assistance system and a program. Background Art

[0002] Currently, agricultural informatization and automation are advancing, and systems have been developed to assist in the operation of applying inputs such as fertilizers and pesticides to fields.

[0003] For example, Patent Document 1 discloses a technique in which the amount of solid fertilizer mixed into irrigation water supplied to a field is made constant, and when input materials are input into the field, the variation in input amount within the field is reduced.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2018-117588 Summary of the invention

[0007] Generally, due to differences in conditions such as sunlight and soil properties, the growth and cultivation of crops may be uneven in a field. Uneven growth and cultivation may cause problems such as insufficient growth and cultivation of crops in a local area, excessive growth, and quality deviation. Therefore, the following technology (such as variable fertilization technology) has been developed to reduce the growth and cultivation differences by changing the input amount of input materials to multiple areas in the field.

[0008] However, the technology of Patent Document 1 cannot change the input amount of input materials for a field filled with irrigation water. However, in a field filled with irrigation water, if the input amount of input materials is changed by using the technology implemented in a field not filled with irrigation water, such as a dry paddy field or a dry field, the input materials may be moved by the water flow, resulting in an unexpected amount of input materials being retained in an unexpected area.

[0009] In view of the above situation, one of the objects of the present disclosure is to reflect the influence of the flow of irrigation water in the field when determining the amount of input materials in the field. Other objects can be understood from the following description and the description of the embodiments.

[0010] Hereinafter, the means for solving the problem will be described using the numbers / figure symbols used in the method for implementing the invention. In order to show an example of the correspondence between the description of the claims and the method for implementing the invention, the above numbers / figure symbols are added in brackets for reference. Therefore, the scope of the claims should not be interpreted in a restrictive manner based on the description in brackets.

[0011] The agricultural operation assistance method involved in the implementation method includes the following steps: generating regional input information (D4) representing the input amount of input materials for multiple areas (A) of the field (F) based on the inlet and outlet position information (D2a) related to the position of the water inlet (WI) and the water tail (DO) set in the field (F) filled with irrigation water; and outputting output information related to the generated regional input information (D4).

[0012] The agricultural operation assistance system (1) involved in the implementation method comprises: a generating unit (130) which generates regional input information (D4) indicating the input amount of input materials for multiple areas (A) of a field (F) based on inlet and outlet position information (D2a) related to the positions of an irrigation water inlet (WI) and a water tail (DO) set in a field (F) filled with irrigation water; and an information output unit (140) which outputs output information related to the regional input information (D4) generated by the generating unit (130).

[0013] The program (P1, P2) involved in the implementation method causes a computer (14, 24) to execute the following steps: based on inlet and outlet position information (D2a) related to the positions of an irrigation water inlet (WI) and a water tail (DO) set in a field (F) filled with irrigation water, generating regional input information (D4) indicating the input amount of input materials for multiple areas (A) of a field (F); and outputting output information related to the generated regional input information (D4).

[0014] Effects of the Invention

[0015] According to the embodiment, when determining the input amount of input materials in the field, the difference in growth and cultivation conditions of crops between fields and between a plurality of areas within a field can be reflected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a block diagram showing the structure of the agricultural management support system involved in the embodiment.

[0017] Figure 2 This is a conceptual diagram for explaining the area within the field involved in the embodiment.

[0018] Figure 3A This is a diagram showing an example of the first region input information according to the embodiment.

[0019] Figure 3B It is a diagram showing an example of area setting information involved in the embodiment.

[0020] Figure 3C It is a diagram showing an example of the second region input information involved in the embodiment.

[0021] Figure 4 This is a block diagram showing the structure of the agricultural management supporting device according to the embodiment.

[0022] Figure 5 This is a block diagram showing the structure of a terminal device involved in the embodiment.

[0023] Figure 6 This is a block diagram showing the functional structure of the agricultural management support system involved in the embodiment.

[0024] Figure 7 This is a diagram showing an example of field information according to the embodiment.

[0025] Figure 8 It is a diagram showing an example of correction setting information according to the embodiment.

[0026] Fig. 9 This is a flowchart showing the processing executed by the agricultural management support system according to the embodiment.

[0027] Fig.10 This is a flowchart showing the processing executed by the agricultural management support system according to the modification.

[0028] Description of Reference Numerals

[0029] 1…agricultural operation assistance system; 10…agricultural operation assistance device; 12…input / output device; 14…calculation device; 16…communication device; 18…storage device; 110…information acquisition unit; 120…determination unit; 130…generation unit; 140…information output unit; 150…information storage unit; 20…terminal device; 22…input / output device; 24…calculation device; 26…communication device; 28…storage device; 210…display unit; NT…network; S…server device; F…field; A_1~A_16…area; WI…inlet; DO…tail; P1, P2…program; M1, M2…storage medium; D1a…first area input information; D1b…area setting information; D2…field information; D2a…entrance / exit information; D2b…high / low information; D2c…soil information; D3…correction setting information; D4…second area input information DETAILED DESCRIPTION

[0030] (First Embodiment)

[0031] The agricultural management support system 1 according to the present embodiment will be described with reference to the accompanying drawings. Figure 1As shown, the agricultural operation support system 1 includes an agricultural operation support device 10 and a terminal device 20. The agricultural operation support system 1 manages information related to input amounts of input materials for multiple areas in the field F for each of more than one field F where target crops should be cultivated (for example, Figure 3A The first area input information D1a and Figure 3C The second area input information D4). The input may be, for example, fertilizer or pesticide. The agricultural operation support device 10 and the terminal device 20 can communicate with each other via the network NT. The network NT is, for example, the Internet.

[0032] The agricultural operation assistance device 10 can communicate with the server device S outside the agricultural operation assistance system 1 via the network NT. The server device S is, for example, a computer having a server function managed by a company or group that provides services for agricultural operations. The server device S sometimes provides the agricultural operation assistance device 10 with information related to the input amount of input materials in multiple areas A within the field F for multiple fields F. In addition, the function of the server device S can be provided as a cloud service on the network NT.

[0033] In this embodiment, the field F is a paddy field filled with irrigation water. Figure 2 As shown, one or more fields F each include a plurality of regions having different growth and cultivation conditions for target crops to be cultivated. Figure 2 In the example of , the field F includes a total of 16 areas A_1 to A_16 divided into a grid shape of 4 rows and 4 columns. In addition, when the plurality of areas included in the field F are not distinguished, they may be simply referred to as areas A.

[0034] For example, inputs such as fertilizers, pesticides, and herbicides may be input into each area A of the field F. In this embodiment, the case where the input is fertilizer is described. In addition, in this specification, sometimes the notation "input amount" of the input indicates any one of the input amount per unit area, the total amount of input of the input to a specific field F as a whole, and the total amount of input of the input to a specific area A in a certain field F.

[0035] The field F of this embodiment includes: a water inlet WI provided with a device (e.g., a water intake) for taking in irrigation water; and a water tail DO provided with a device (e.g., a drain outlet) for discharging irrigation water from the field F. Irrigation water sometimes moves downstream in the direction of water flow from the water inlet WI toward the water tail DO. Therefore, inputs put into a region A (e.g., region A_1 to region A_4) located more upstream in the direction of water flow among a plurality of regions A sometimes move toward a region A (e.g., region A_5 to region A_16) located more downstream due to the flow of irrigation water. The actual effect of the input is determined by the amount of input retained in the region A. Therefore, when the same amount of input is put into the region A located upstream and the region A located downstream, the more upstream the region A is, the smaller the effect of the input is, and the more downstream the region A is, the greater the effect of the input is.

[0036] Figure 2 In the figure, each area A in the field F is shown by a square, and the area A_1 with the worst growth and cultivation conditions is blackened, and the area A_2 with the second worst growth and cultivation conditions is drawn with a diagonal line. In addition, the area A_16 with the best growth and cultivation conditions is drawn with a vertical line, and the area A_15 with the second best growth and cultivation conditions is drawn with a horizontal line. Other areas A with standard growth and cultivation conditions in the field F are shown by white squares.

[0037] The growth and cultivation conditions of crops in each field F and each area A can be represented by index values ​​representing the composition of the soil, the measurement results of the amount of sunshine, the actual growth and cultivation conditions of crops, and past harvesting performance, for example. In the present embodiment, the server device S uses the presence or absence of vegetation at each location on the surface of the earth and the NDVI representing the activity of the vegetation, calculated based on multispectral satellite photos, as index values ​​for growth and cultivation conditions. For example, the server device S obtains a multispectral image of the surface of the earth including multiple fields F taken by an artificial satellite. The server device S generates a growth and cultivation correspondence map (e.g., an NDVI correspondence map) for the multiple fields F based on the multispectral image. The NDVI correspondence map is a growth and cultivation correspondence map representing the growth and cultivation degree of plants at each location, which is generated by applying the NDVI values ​​determined for each location in the field F on a map. The server device S defines multiple areas A with different cultivation conditions for crops in the field F for each of the multiple fields F based on the NDVI correspondence map, and generates information related to the recommended input amount of inputs for each area A (e.g., Figure 3A The first area input information D1a).

[0038] As an example, the server device S divides the geographical scope of the field F into a plurality of areas A. Furthermore, the server device S ranks the growth and cultivation conditions of the crops for each area A based on the NDVI correspondence map of the field F at a certain time (for example, before the specified day when the input materials are input into the field F). The level of the growth and cultivation conditions of each area A set by the server device S is also called the area level. It can be inferred that the area A with a higher growth and cultivation degree of the crops in the field F has better growth and cultivation conditions for the crops than the area A where this is not the case. Therefore, for the area A with an area level with a higher growth and cultivation degree, the recommended input amount of the input material (fertilizer in this embodiment) is less, and on the other hand, for the area A with an area level with a lower growth and cultivation degree, the input amount of the input material is more. The server device S sometimes sends the first area input information D1a to the agricultural operation assistance device 10.

[0039] For example Figure 3A As shown, the first area input information D1a sent by the server device S to the agricultural operation support device 10 stores the "area ID" indicating the identifier of each area A included in the field F, the "geographic information" indicating the geographical range of each area A, and the "area level" indicating the level of the area A in a correlated manner. When the shape of the area A is a polygon, the "geographic information" includes information on the geographical coordinates (for example, latitude and longitude) of the vertices of the boundary line of the area A. In addition, as the level of the growth and cultivation conditions of the area A, the "area level" indicates any level of five stages from level 1 with the worst growth and cultivation conditions to level 5 with the best growth and cultivation conditions.

[0040] exist Figure 3A In the first area input information D1a, for Figure 2 Among areas A_1 to A_16 of field F, areas A_3 to A_14 where growth and cultivation conditions meet standard criteria (for example, the difference between the average NDVI value within area A and the average NDVI value of field F as a whole is below the first threshold) are set to level 3 representing standard growth and cultivation conditions.

[0041] On the other hand, in the first area input information D1a, the lowest level 1 is set for area A_1 whose growth and cultivation conditions meet the criteria of level 1 (for example, the average value of NDVI in area A is lower than the average value of the entire field F by a value exceeding the second threshold). In addition, level 2 is set for area A_2 whose growth and cultivation conditions meet the criteria of level 2 in the first area input information D1a. Regarding the criteria of level 2, for example, the average value of NDVI in area A is lower than the average value of the entire field F, and the difference is greater than the first threshold but less than the second threshold.

[0042] exist Figure 3AIn the first regional input information D1a, the highest level 5 is set for the region A_16 whose growth and cultivation conditions meet the criteria of level 5 (for example, the average value of NDVI in region A is higher than the average value of the entire field F by a value exceeding the third threshold). In addition, level 4 is set for the region A_15 whose growth and cultivation conditions meet the criteria of level 4 in the first regional input information D1a. The criteria of level 4 are, for example, the average value of NDVI in region A is higher than the average value of the entire field F, and the difference is greater than the first threshold but less than the third threshold.

[0043] Regarding the plurality of area levels, the server device S may provide the agricultural management support device 10 with information on the amount of input of input materials recommended for the area A for which the area level is set (for example, Figure 3B The area setting information D1b shown. Figure 3B The area setting information D1b stores “area levels” indicating a plurality of area levels that can be set for the area A and “injection coefficients” indicating the amount of injection into the area A corresponding to the area A at the area level.

[0044] Figure 3B The "input coefficient" represents, for example, the ratio of the input amount per unit area of ​​the input recommended for the area A of the area level to the first reference input amount per unit area for the field F. The first reference input amount is, for example, the reference mass that should be input per acre recommended by the manufacturer of the input. Alternatively, the first reference input amount may be the input amount per unit area desired by the user for each field F, which is set by user input. For example, with respect to level 3 representing standard growth and cultivation conditions, the "input coefficient" of the area setting information D1b is set to 1. Therefore, when the input processing of the input is performed using the first area input information D1a and the area setting information D1b as is, the first reference input amount of the input is input for area A with an area level of level 3. In addition, when the area level (level 3 in the above example) serving as the reference is set to 1, the input coefficient can also be defined as a coefficient indicating the relative amount of input that should be input for each area level.

[0045] In the area setting information D1b, the "input coefficient" is set in such a way that the value becomes larger as the area level corresponding to the worse growth and cultivation conditions is maintained. Therefore, when the input operation is performed using the first area input information D1 and the area setting information D1b as they are, more fertilizers can be input into the area A as the growth and cultivation conditions become worse than the standard, and the better the growth and cultivation conditions are than the standard, the less fertilizers can be input into the area A. As a result, the fluctuations in the yield and quality of crops caused by the differences in the growth and cultivation conditions of the area A in the field F may be reduced. However, in the field F, fertilizers are sometimes moved due to the flow of irrigation water from the water inlet WI toward the water tail DO. For example, sometimes a part of the fertilizer input into the area A does not remain in the area A but moves to other areas A (for example, the area A located downstream of the water flow of the irrigation water).

[0046] In contrast, the agricultural management support system 1 provides information indicating the positions of the water inlet WI and the water tail DO of the field F (for example, Figure 7 The second area input information D4 is generated based on the field information D2 of the second area input information. At least a part of the input amount for each area A shown in the second area input information D4 is sometimes corrected according to the first area input information D1a in accordance with the flow direction of the irrigation water shown by the positions of the water inlet WI and the water tail DO. In addition, the first area input information D1a is also called the pre-correction input information. In addition, the agricultural operation assistance system 1 corrects the input amount to each area A shown in the first area input information D1a in consideration of the flow of irrigation water, and therefore, the input amount of the first area input information D1a is also called the second reference input amount.

[0047] and Figure 3A The first area input information D1a is the same as Figure 3C The second regional input information D4 stores the "region ID" representing the identifier of each region A included in the field F, the "geographic information" representing the geographical scope of each region A, and the "region level" representing the level of the region A in an associated manner. Furthermore, the second regional input information D4 also stores the "input amount" representing the input amount of the input recommended for each region A. For example, the "input amount" represents the input amount per unit area (mass per 1 square meter) of the input recommended for the region A corresponding to the row. The specific numerical value of the recommended input amount shown in the "input amount" is determined by the processing described later and based on the growth and cultivation conditions of the region A, and the relative position of the region A relative to the water inlet WI and the water tail DO. In addition, the second regional input information D4 is also referred to as the determined input information.

[0048] like Figure 3CAs shown, the agricultural operation support system 1 can generate the second area input information D4 reflecting the difference in the growth and cultivation conditions of the crops between the multiple areas A in the field F and the flow of the irrigation water corresponding to the positions of the water inlet WI and the water outlet DO. Thus, the agricultural operation support system 1 can provide information that can be used in the input of the amount of input adjusted in a manner to reduce the deviation of the growth and cultivation of the crops caused by the difference in the growth and cultivation conditions of the multiple areas A in the field F, based on the movement of the input caused by the irrigation water for each area A in more than one field F.

[0049] The structure of the agricultural management support system 1 is described. Figure 4 As shown, the agricultural operation assistance device 10 included in the agricultural operation assistance system 1 has an input / output device 12, a computing device 14, a communication device 16, and a storage device 18. The agricultural operation assistance device 10 is, for example, a computer having a server function. In addition, part or all of the functions of the agricultural operation assistance device 10 can be provided as a cloud service on the network NT.

[0050] Information used by the computing device 14 to perform processing is input to the input-output device 12. In addition, the input-output device 12 outputs the result of the processing performed by the computing device 14. The input-output device 12 includes various input devices and output devices, such as a keyboard, a mouse, a microphone, a display, a speaker, a touch panel, etc. The input-output device 12 may also be omitted.

[0051] The communication device 16 is connected to the network NT in a communicable manner, and communicates with devices (such as the terminal device 20 and the server device S) outside the agricultural operation support device 10 via the network NT. Sometimes the communication device 16 transmits information obtained from one or more terminal devices 20 and the server device S to the computing device 14. In addition, sometimes the information generated by the computing device 14 is transmitted to the terminal device 20 and the server device S. The communication device 16 includes various interfaces such as NIC (Network Interface Card) and USB (Universal Serial Bus).

[0052] The storage device 18 stores programs P1 and the like including various data and commands used by the agricultural operation assistance device 10 of this embodiment to perform the processing described later. For example, the storage device 18 can store information indicating the scheduled date for inputting inputs into each field F. The storage device 18 is used as a non-transitory tangible storage medium for storing the above-mentioned data and commands. The program P1 can be provided as a computer program product recorded in a computer-readable storage medium M1. Alternatively, the storage medium M1 can be a storage device of an external server that stores the program P1. In this case, the program P1 can be provided as a computer program product that can be downloaded from the server.

[0053] The computing device 14 reads out and executes a program P1 including instructions and data for executing at least a part of the processing described later from the storage device 18. For example, the computing device 14 includes a central processing unit (CPU) and the like.

[0054] The computing device 14 realizes the functional units of the agricultural management supporting device 10 described later by reading and executing the program P1.

[0055] like Figure 5 As shown, the terminal device 20 included in the agricultural operation support system 1 includes an input / output device 22, a computing device 24, a communication device 26, and a storage device 28. The terminal device 20 is, for example, a mobile device such as a tablet terminal or a smart phone. In addition, the terminal device 20 may be a desktop personal computer or a notebook computer. Alternatively, the terminal device 20 may be a computer device (such as a vehicle navigation system) installed in an operation device for inputting inputs into the field F.

[0056] Information used by the computing device 24 to perform processing is input to the input-output device 22. In addition, the input-output device 22 outputs the result of the processing performed by the computing device 24. The input-output device 22 includes various input devices and output devices, such as a speaker and a touch panel. In addition, the input-output device 22 may include a keyboard, a mouse, a microphone, a display, and the like.

[0057] The communication device 26 is connected to the network NT in a communicable manner, and communicates with a device (such as the agricultural operation assistance device 10) outside the terminal device 20 via the network NT. The communication device 26 transmits information obtained from the agricultural operation assistance device 10 to the computing device 24. In addition, sometimes information generated by the computing device 24 is transmitted to the agricultural operation assistance device 10. The communication device 26 includes, for example, various interfaces such as a transceiver, NIC, and USB for wireless communication such as a wireless LAN (Local Area Network) and a cellular network.

[0058] The storage device 28 stores the program P2 and the like including various data and commands used by the agricultural operation assistance system 1 of the present embodiment to perform the processing described later. The storage device 28 is used as a non-temporary storage medium for storing the above-mentioned data and commands. The program P2 can be provided as a computer program product recorded in a computer-readable storage medium M2. Alternatively, the storage medium M2 can be a storage device of an external server that stores the program P2. In this case, the program P2 can be provided as a computer program product that can be downloaded from the server.

[0059] The computing device 24 reads out and executes a program P2 including commands and data for executing at least a part of the processing described later from the storage device 28. For example, the computing device 24 includes a central processing unit (CPU) and the like.

[0060] The computing device 24 realizes the functional units of the terminal device 20 described later by reading and executing the program P2.

[0061] The agricultural operation support device 10 and the terminal device 20 are connected by Figure 4 and Figure 5 The physical structure shown is realized Figure 6 As an example, the computing device 14 of the agricultural management support device 10 implements the functions of the information acquisition unit 110, the determination unit 120, the generation unit 130, the information output unit 140, and the information storage unit 150 by executing the program P1.

[0062] The information storage unit 150 stores, for example, information input by a user using the input / output device 12 and information acquired from an external device (e.g., the server device S or an external server). In addition, the information storage unit 150 temporarily stores information generated or updated by the determination unit 120 and the generation unit 130. The information storage unit 150 sometimes provides the stored information to the information acquisition unit 110, the determination unit 120, the generation unit 130, and the information output unit 140. The information storage unit 150 stores, for example, field information D2 and correction setting information D3 in advance before starting the processing described later.

[0063] The field information D2 stores information indicating one or more fields F that are processing targets, such as fields F owned by the user of the agricultural management support system 1. Figure 7 As shown, the field information D2 includes a "field ID" as an identifier that uniquely indicates each field F, a "geographical range" indicating the geographical range of the field F, an "entrance and exit" indicating the positions of the water inlet WI and the water tail DO, a "height" indicating the height (e.g., altitude) of multiple locations in the field F, and a "soil" indicating the quality of the soil in each area A. In addition, the "entrance and exit" part in the field information D2 is also referred to as entrance and exit information D2a, the "height" part is also referred to as height information D2b, and the "soil" part is also referred to as soil information D2c. Among them, when each field F is a polygon, the "geographical range" indicates the geographical location (e.g., latitude and longitude) of each vertex. In this embodiment, the "geographical range" includes a map image of the following area, which includes each field F. In addition, the field information D2 can also store the working days of the input materials for each field F.

[0064] Figure 7 The inlet and outlet information D2a indicates, for example, the positions of the water inlet WI and the water tail DO set in the field F (for example, latitude and longitude).

[0065] The height information D2b includes, for example, information of an altitude correspondence diagram indicating the position and altitude of each point included in the plurality of areas A. The flow direction and flow rate of irrigation water are determined according to the relative height of area A relative to the adjacent area A. Therefore, sometimes the lower the area A is relative to the adjacent area A, the more inputs invested in an area A are retained in the area A, and the more inputs flow into the area A from the adjacent area A. Therefore, based on the height information D2b, the agricultural operation assistance system 1 of the present embodiment corrects the first area input information D1a in a manner that increases the amount of inputs invested compared to a case where this is not the case, for an area A that is located at a position higher than the adjacent area A by an amount exceeding a prescribed height reference.

[0066] The soil information D2c includes, for example, the location of each point included in the plurality of regions A, and information related to the viscosity of the soil at the point. In the present embodiment, the information related to the viscosity of the soil shown in the soil information D2c indicates whether the soil at each point in the field F is one of a plurality of soils (e.g., clay soil, sandy soil) in which the fluidity of the input is different according to the flow of irrigation water. Sometimes, the lower the viscosity of the soil, the easier it is for the input to move along the flow of irrigation water. Therefore, with respect to the agricultural operation assistance system 1 of the present embodiment, when correcting the input amount to the region A shown in the first region input information D1a, the first region input information D1a is corrected in such a manner that the input amount of the input is increased compared to a case where this is not the case, for the region A where the viscosity of the soil shown in the soil information D2c is reduced by an amount exceeding a prescribed viscosity reference.

[0067] For example Figure 8 As shown, the correction setting information D3 stores setting information indicating a reference for generating the second area input information D4 according to the positions of the water inlet WI and the water tail DO. In this embodiment, the agricultural operation support system 1 ranks the multiple areas A included in a field F according to the relative positions of the areas A relative to the water inlet WI and the water tail DO. Figure 8 In the example, the correction setting information D3 stores a “position level” that ranks the degree to which each area A is located upstream, a “relative position” that represents the position range of area A corresponding to the position level, and a “coefficient” that represents the coefficient used to determine the input amount for area A corresponding to the position level.

[0068] As the correction level that can be assigned to each area A in the field F, Figure 8 The "position level" represents any one of the four levels from position level 1 located at the most upstream side to position level 4 located at the most downstream side. In this embodiment, the "relative position" uses the ratio of the distance from the representative position (e.g., center) of area A to the water inlet WI to the distance from the representative position to the water tail DO as an evaluation value to represent the range of evaluation values ​​included in area A of the position level. Figure 8 In the example of "Relative position", the value is taken when the distance between the representative position and the water outlet WI is the numerator and the distance from the representative position to the water tail DO is the denominator.

[0069] In this embodiment, the "coefficient" stores a correction coefficient for correcting the input amount of each area A of each level of field F according to the influence of water flow when generating the second area input information D4. The coefficient can also be called an indicator value of the increase or decrease in the amount of input retained in the area A due to the water flow from the water inlet WI to the water tail DO relative to the amount of input into the area A of the position level. How to use the correction coefficient to generate the second area input information D4 is described later. Figure 8 The correction coefficient is set as follows: the relative position of area A is located closer to the upstream side of the irrigation water flow, so that the amount of input into area A is greater than the second reference input amount shown in the first area input information D1a.

[0070] Figure 6 The information acquisition unit 110 acquires information necessary for the agricultural management support device 10 to execute the following processing from the information storage unit 150, the terminal device 20 or the server device S. The information acquisition unit 110 provides the acquired information to the determination unit 120, the generation unit 130, the information output unit 140 or the information storage unit 150.

[0071] As described later, for a plurality of areas A included in one or more fields F, the determination unit 120 determines a correction coefficient for determining an input amount taking into account the influence of the flow of irrigation water based on the input amount of the first area input information D1a.

[0072] As will be described later, the generator 130 generates the second region input information D4 based on the correction coefficient determined by the determiner 120 .

[0073] The information output unit 140 outputs the output information related to the second region input information D4 generated by the generating unit 130 .

[0074] like Figure 6 As shown, the computing device 24 of the terminal device 20 implements the function of the display unit 210 by executing the program P2.

[0075] As described later, the display unit 210 displays information indicating the input amount for each field F indicated by the second area input information D4 in a user-visible manner based on the output information output by the information output unit 140 using the input / output device 22 .

[0076] (Operation of the agricultural management support system)

[0077] According to the above functional structure, the agricultural operation support system 1 performs Fig. 9The processing shown in the figure generates second area input information D4 indicating the input amount of the input material for the area A in one or more fields F, and displays the generated second area input information D4. For example, the agricultural management support device 10 of the agricultural management support system 1 starts the operation of displaying the input material input amount to the field F indicated by the field information D2 on a predetermined date (for example, one week before). Fig. 9 Processing shown.

[0078] exist Fig. 9 In the process of, first, in step S1002, the information acquisition unit 110 acquires the field information D2. For example, the information acquisition unit 110 acquires the field information D2 from the information storage unit 150. Alternatively, the information acquisition unit 110 may acquire the field information D2 from an external server (e.g., a server provided by a manufacturer of a working device working in the field F). The field information D2 acquired by the information acquisition unit 110 may include an image of a map of a geographical range, and the geographical range includes each field F.

[0079] Next, in step S1004, the information acquisition unit 110 acquires first area input information D1a indicating the input amount of the input object for each area A included in one or more fields F indicated by the field information D2. For example, the information acquisition unit 110 transmits information requesting the first area input information D1a for one or more fields F to the server device S using the communication device 16, thereby acquiring the first area input information D1a for each field F. In addition, the information acquisition unit 110 further acquires the area setting information D1b from the server device S in step S1004.

[0080] Next, in step S1006, the determination unit 120 determines the correction coefficient for the region A. First, the determination unit 120 determines the correction coefficient based on Figure 7 The correction coefficient corresponding to the relative position of each area A with respect to the water inlet WI and the water tail DO is determined based on the inlet and outlet information D2a in the field information D2. As an example, the determination unit 120 calculates the ratio of the distance from the representative position (e.g., the center) of each area A to the water inlet WI to the distance from the representative position to the water tail DO. Figure 8The position level of each area A is determined by comparing the numerical range of each position level indicated in the "Relative Position" of the correction setting information D3. The decision unit 120 can select an increased or decreased position level for the area A whose evaluation value matches the lower limit threshold of a specific position level and the upper limit threshold of a field level that is one level lower than the level. Here, the decreased position level is selected. The decision unit 120 determines the value stored in the "Coefficient" of the row corresponding to the determined position level in the correction setting information D3 as a correction coefficient (also referred to as a first correction coefficient) corresponding to the relative position of each area A with respect to the water inlet WI and the water tail DO.

[0081] In this embodiment, the determination unit 120 further determines the correction coefficient for each area A based on the height of the soil surface in each area A. For example, the determination unit 120 determines the correction coefficient for each area A based on Figure 7 The height information D2b in the field information D2 corrects the first correction coefficient determined for the area A whose soil surface is higher than the prescribed height reference compared to the adjacent area A in such a manner that the input amount increases. As an example, the determination unit 120 distinguishes information on the altitudes of the various locations in the field F shown in the height information D2b from information on the altitudes of the locations included in each area A. Furthermore, when each area A includes information on the altitude of one location, the altitude is determined as the height of the area A, and when there is information on multiple locations, their representative value (such as a median value or an average value) is determined as the height of the area A, thereby determining the height difference of each area A. Figure 2 As shown, when each area A is a square, the determination unit 120 may perform the above correction on each area A when there is an area A among the four adjacent areas A where the soil surface is lower than the height reference relative to the area A.

[0082] In addition, the determination unit 120 may correct the first correction coefficient determined for the area A whose soil surface is lower than the predetermined height reference compared to the adjacent area A so as to reduce the input amount. As an example, the determination unit 120 may increase the first correction coefficient determined for the area A whose soil surface is higher than the predetermined height reference compared to the adjacent area A by a ratio or an absolute value specified by setting, and may reduce the first correction coefficient determined for the lower area A by a ratio or an absolute value specified by setting. The correction coefficient corrected based on the height difference is also referred to as the second correction coefficient.

[0083] In the present embodiment, the determination unit 120 further determines the correction coefficient for each area A based on the quality of the soil in each area A. For example, the determination unit 120 corrects the second correction coefficient determined for the area A where the viscosity of the soil decreases by an amount exceeding the prescribed viscosity reference in a manner that increases the input amount based on the soil information D2c in the field information D2. As an example, the determination unit 120 extracts information related to the viscosity of the soil at the location included in each area A from the viscosity of the soil at each location of the field F shown in the soil information D2c. Moreover, in the case where each area A includes information about the viscosity of the soil at one location, the viscosity is determined as the viscosity of the area A, and in the case where there is information about a plurality of locations, the representative value (for example, the median value or the average value) thereof is determined as the viscosity of the area A. Furthermore, the determination unit 120 may increase the second correction coefficient determined for the area A where the viscosity of the soil decreases by an amount exceeding the prescribed viscosity reference by a ratio or an absolute value specified by setting. The correction coefficient that corrects the second correction coefficient based on the quality of the soil is also referred to as a third correction coefficient. The determination unit 120 determines the third correction coefficient as a correction coefficient (also referred to as a determined correction coefficient) for correcting the first region input information D1a to generate the second region input information D4.

[0084] Next, in Fig. 9 In step S1008, the generator 130 determines the pre-correction input amount of the input material for each area A of the field F for the plurality of fields F. The pre-correction input amount represents the input amount per unit area for each area A before correction considering the influence of the flow of irrigation water, which is determined based on the first area input information D1a and the area setting information D1b. For example, the generator 130 calculates the second reference input amount set for the field F multiplied by Figure 3B The value obtained by using the coefficient indicated by the "injection coefficient" of the area setting information D1b is used as the pre-correction injection amount per unit area of ​​the area A for the area level. Furthermore, for each area A indicated by the "area ID" of the first area injection information D1a, the pre-correction injection amount calculated for the area level defined by the "area level" is determined as the pre-correction injection amount for the area A.

[0085] Next, in Fig. 9In step S1010, the generation unit 130 generates second area input information D4 for each of more than one field F. For example, the generation unit 130 calculates the input amount obtained by correcting the pre-correction input amount (second reference input amount) for each area A of each field F determined in step S1008 using the correction coefficient determined in step S1006. For example, the generation unit 130 determines the corrected input amount as the value obtained by multiplying the pre-correction input amount determined for each field F by the correction coefficient determined for the area A in step S1006. Furthermore, the generation unit 130 calculates the corrected input amount by multiplying the pre-correction input amount determined for the field F by the correction coefficient determined for the area A in step S1006. Figure 3C The column "input amount" of the row corresponding to the region A in the second region input information D4 shown in FIG. 1 stores the value of the corrected input amount determined for the region A to generate the second region input information D4. Figure 3C The "region ID", "geographic information" and "region level" in the second region input information D4 shown in the figure locally store the corresponding information of the first region input information D1a.

[0086] Next, in step S1012, the information output unit 140 outputs output information. For example, the information output unit 140 outputs output information including the second area input information D4 generated in step S1010 and the image of the map including the geographical range of the field F acquired in step S1002 to the terminal device 20 using the communication device 16.

[0087] Next, in step S1014, the display unit 210 of the terminal device 20 displays the output information outputted in step S1012. For example, the display unit 210 may display the information indicating each area A and the information indicating the input amount set in the second area input information D4 for the area A on the screen of the display device of the input / output device 22 of the terminal device 20 in a manner overlapping with the image of the map indicating each field F.

[0088] The agricultural management support system 1 of this embodiment can provide the second area input information D4 indicating the input amount of the input material taking into account the growth and cultivation conditions of the area A and the flow of irrigation water in the field F for the plurality of areas A in the field F. Therefore, the agricultural management support system 1 can easily reduce the deviation in the quality of the crops cultivated in the field F.

[0089] (Variation Example)

[0090] The structure described in the embodiment is an example, and the structure can be changed within the range that does not hinder the function. For example, the agricultural operation assistance system 1 can replace the method of generating the second area input information D4 for correcting the second reference input amount representing the input amount corresponding to the growth and cultivation conditions of each area A, and generate the third area input information for correcting the above-mentioned first reference input amount based on the determination correction coefficient. In this case, the third area input information is set as follows: corresponding to the lower degree of retention of the input material input into each area A in the area A, the higher the value of the determination correction coefficient, the greater the input amount for the area A.

[0091] For example, the agricultural management support device 10 of the agricultural management support system 1 according to this modification starts the operation of the agricultural management support device 10 on a predetermined date before (for example, one week before) the scheduled date for inputting the input material into one or more fields F. Fig.10 Processing shown.

[0092] exist Fig.10 In the process of, first, in step S2002, Fig. 9 Similar to step S1002, the information acquisition unit 110 acquires the field information D2.

[0093] Next, in step S2004, the decision unit 120 divides the one or more fields F into a plurality of areas A. As an example, the decision unit 120 may divide the geographical range of the one or more fields F indicated by the field information D2 acquired in step S2002 into grid units at intervals specified by setting. Alternatively, the decision unit 120 may receive a user input for dividing the field F into a plurality of areas A using the input / output device 12 and determine the plurality of areas A based on the user input.

[0094] Next, in step S2006, Fig. 9 The determination unit 120 determines the correction coefficient for each area A in the same manner as step S1006.

[0095] Next, in step S2008, the generator 130 determines the pre-correction input amount for each area A. For example, the generator 130 may determine the standard input amount per unit area indicated by the manufacturer of the input material (first standard input amount) as the pre-correction input amount for each area A. Alternatively, the generator 130 may accept user input indicating the desired total input amount for the field F using the input-output device 12 and determine the pre-correction input amount based on the user input. In this case, the generator 130 may determine the pre-correction input amount per unit area as the value obtained by dividing the total input amount indicated by the accepted user input by the area of ​​the field F.

[0096] Next, in step S2010, the generator 130 generates the third area input information. For example, the generator 130 may set the input amount before correction determined in step S2008 as the reference amount, and determine the value obtained by multiplying the reference amount by the correction coefficient determined in step S2006 as the input amount to each area A shown in the third area input information. In addition, the third area input information may include Figure 3C The information including the column of “region ID”, the column of “geographic information” and the column of “input amount” in the second region input information D4.

[0097] Next, in Fig.10 In step S2012, Fig. 9 The same as step S2010, the information output unit 140 outputs the output information.

[0098] Next, in Fig.10 In step S2014, Fig. 9 Similar to step S1014, the display unit 210 of the terminal device 20 displays the output information output in step S2010.

[0099] Even when the basic first area input information D1a cannot be acquired, the agricultural management support system 1 of this modification can provide the third area input information indicating the input amount taking into account the influence of the flow of irrigation water.

[0100] In addition, the device structure of the agricultural operation support system 1 may be different from the above example. For example, in the above embodiment, the agricultural operation support device 10 and the terminal device 20 share the responsibility of performing Fig. 9 or Fig.10 However, this is not limited to this, and the processing may also be performed by a device (such as the agricultural operation assistance device 10). Fig. 9 or Fig.10 In this case, the agricultural management assistance device 10 may have a functional unit corresponding to the display unit 210. In this case, the agricultural management assistance system 1 outputs the output information to the outside by displaying the output information to the user using the display unit 210.

[0101] Alternatively, the agricultural management support device 10 of the agricultural management support system 1 of the first embodiment may have the function of the server device S. For example, when information indicating the NDVI correspondence map is obtained from an external server, Fig. 9 In step S1004, the agricultural operation assistance device 10 can refer to Figure 2 and Figure 3A The described method generates the first region input information D1a based on the growth and development correspondence map.

[0102] In addition, in the first region input information D1a, any one of five levels of region levels is set for each region A. However, the number of region levels may be more than or less than 5. Alternatively, the first region input information D1a may store a region index value representing the growth and cultivation conditions of the region A instead of the region level. In this case, the generation unit 130 may store the region index value representing the growth and cultivation conditions of the region A. Fig. 9 In step S1008, the area index value is set to x and the pre-correction input amount of each area A is calculated by using a function f(x)=ax+b using constants (a, b) determined by experiments. The function f(x) is not limited to a linear function, and can be a quadratic function or a function of other forms such as f(x)=a / x+b. In this case, the input amount for each area A can take a continuous value.

[0103] In addition, in the above embodiment, Fig. 9 In step S1008, the determination unit 120 determines the position level of 4 stages for each area A, and in step S1010, the generation unit 130 generates the second area input information D4 using any coefficient of the correction coefficient of the 5 stages corresponding to the position level. However, the number of position levels may be more than 4 or less than 4. Alternatively, the correction coefficient may be determined independently of the position level by using a function that sets the index value representing the relative position of the area A (for example, the ratio of the distance relative to the water inlet WI and the water tail DO) as a variable. For example, the determination unit 120 may set the index value representing the relative position of the area A to x in step S1010 and calculate the correction coefficient by using the function f(x)=ax+b using constants (a, b) obtained through experiments. The function f(x) is not limited to a linear function, but may be a quadratic function or a function of other forms such as f(x)=a / x+b. In this case, the correction coefficient for each area A may take a continuous value.

[0104] In addition, Fig. 9 In step S1006, the decision unit 120 determines the correction coefficient based on the relative position of each area A relative to the water inlet WI and the water tail DO, and the height of the soil surface and the quality of the soil in each area A. However, the decision unit 120 may determine the correction coefficient based only on the relative position of each area A relative to the water inlet WI and the water tail DO. Alternatively, the decision unit 120 may determine the correction coefficient based on one of the relative position of each area A relative to the water inlet WI and the water tail DO, and the height of the soil surface and the quality of the soil in each area A.

[0105] If the soil quality of a certain field F is uniform, the decision unit 120 may Fig. 9In step S1006, the first correction coefficient or the second correction coefficient is corrected based on the viscosity of the soil of the field F as a whole. For example, it can be imagined that even in the presence of the same water flow, the higher the viscosity of the soil of the field F as a whole, the lower the proportion of the inputs moved to each area A. Therefore, in a case where the viscosity of the soil of the field F as a whole is higher than a prescribed benchmark, the correction amount of the correction coefficient based on the first correction coefficient (or the second correction coefficient) can be changed to be reduced. As an example, the determination unit 120 can reduce the value of the first correction coefficient (or the second correction coefficient) that is greater than the benchmark value (for example, 1) in a manner close to 1, and increase the value that is less than the benchmark value in a manner close to 1 for each area A of the field F where the viscosity of the soil is higher than the prescribed benchmark.

[0106] Furthermore, in step S1006, the decision unit 120 may calculate the degree of retention of inputs in each region A through physical simulation based on the positions of the water inlet WI and the water tail DO indicated by the inlet and outlet information D2a, the slope of the soil surface of the field F indicated by the height information D2b, the quality of the soil indicated by the soil information D2c, and the information indicating the physical properties of the inputs. Furthermore, the decision unit 120 may determine the correction coefficient for each region A in such a manner that the amount of inputs retained in each region A per unit area becomes uniform. Alternatively, the decision unit 120 may determine the correction coefficient for each region A in such a manner that the input amount indicated by the first region input information D1a is retained in each region A.

[0107] In addition, Fig. 9 In step S1012, the information output unit 140 outputs the output information to the terminal device 20. However, the information output unit 140 may also output the output information including the second area input information D4 to other devices such as an operating device that performs operations in the field F and an external server that manages the contents of agricultural operations. For example, a case where an operating device having a positioning function based on a GNSS (Global Navigation Satellite System) and a function of automatically controlling the input amount and inputting input materials is used is described. In this case, the information output unit 140 may output the output information including the second area input information D4 corresponding to the field F to the operating device that performs operations in the specific field F.

[0108] In addition, when the agricultural operation support system 1 includes a working device, if the working device that has received the second area input information D4 is determined to be located within each area A indicated by the second area input information D4 through GNSS positioning, the input material of the input amount specified by the second area input information D4 can be input into the surface of the area A. In addition, the working device can determine its own position by estimating its own position using a quantum compass instead of positioning based on GNSS.

[0109] In addition, when the agricultural operation support system 1 includes an operation device having a function of locating the height (e.g., altitude) during operation by GNSS positioning or the like and outputting positioning information indicating the height, the information acquisition unit 110 can generate the height information D2b about each area A of the field F based on the positioning information indicating the height. Fig. 9 In step S1002, the information acquisition unit 110 acquires positioning information of one or more points in each area A from a working device performing work in the field F. Furthermore, the information acquisition unit 110 may determine a statistic (e.g., a median value or an average value) of the height in each area A as the height of the soil surface in the area A.

[0110] (Note)

[0111] The agricultural management assistance method, agricultural management assistance system, and program described in each embodiment can be described as follows.

[0112] The agricultural operation assistance method involved in the first method includes the following steps:

[0113] generating regional input information indicating input amounts of input materials for a plurality of regions of the field based on inlet and outlet position information related to positions of an inlet and an outlet of the irrigation water provided in the field filled with the irrigation water; and

[0114] Output information related to the generated regional input information is output.

[0115] The agricultural management assistance method according to the second aspect is based on the agricultural management assistance method according to the first aspect.

[0116] The step of generating the regional input information also includes the following steps:

[0117] Determining, for each of the plurality of regions, a correction coefficient corresponding to an increase or decrease in the amount of input material retained in the region relative to the amount input into the region based on the relative position of the region relative to the water inlet and the water tail indicated by the inlet and outlet position information; and

[0118] The input amounts of the input objects for the plurality of regions are determined based on the correction coefficient and the reference input amounts of the input objects for the plurality of regions.

[0119] The agricultural management assistance method according to the third aspect is based on the agricultural management assistance method according to the second aspect.

[0120] The step of determining the correction coefficient comprises the following steps: determining a first correction coefficient for a first area based on the positions of the water inlet and the water tail, and determining a second correction coefficient for a second area located downstream of the first area in the flow direction of the irrigation water.

[0121] When the same reference input amount is corrected, when the input amount of the input object is determined using the first correction coefficient, the determined input amount is increased compared to the case where the second correction coefficient is used.

[0122] The agricultural management assistance method according to the fourth aspect is based on the agricultural management assistance method according to the second or third aspect.

[0123] The step of determining the correction coefficient further includes the step of determining the correction coefficient based on height information indicating the height of the soil surface of the plurality of regions.

[0124] The agricultural management assistance method according to the fifth aspect is based on the agricultural management assistance method according to any one of the second to fourth aspects.

[0125] The step of determining the correction coefficient includes the following steps: for a third area among the multiple areas, which is lower than the soil surface adjacent to the height information by an amount exceeding the prescribed height reference, the correction coefficient is determined in such a manner that the input amount of the input material shown in the input information of the area is increased compared to a case where the input amount is not lowered by an amount exceeding the height reference.

[0126] The agricultural management assistance method according to the sixth aspect is in addition to the agricultural management assistance method according to the fourth or fifth aspect.

[0127] The method further includes the step of generating the height information based on positioning information indicating the height of a working device that performs work in the field and outputted from the working device.

[0128] The agricultural management assistance method according to the seventh aspect is based on the agricultural management assistance method according to any one of the second to sixth aspects.

[0129] The step of determining the correction coefficient further includes the step of determining the correction coefficient further based on soil information related to the viscosity of the soil in the plurality of regions.

[0130] The agricultural management assistance method according to the eighth aspect is based on the agricultural management assistance method according to the seventh aspect.

[0131] Regarding the step of determining the correction coefficient, for a fourth area among the multiple areas where the viscosity of the soil indicated by the soil information is reduced by an amount exceeding a prescribed viscosity benchmark, the correction coefficient is determined in a manner such that the input amount of the input material indicated by the input information of the area is increased compared to a case where the viscosity of the soil is not reduced by an amount exceeding the viscosity benchmark.

[0132] The agricultural management assistance method according to the ninth aspect is based on the agricultural management assistance method according to any one of the second to eighth aspects.

[0133] The reference input amounts for the plurality of areas are determined based on pre-correction area input information indicating input amounts for the plurality of areas before correction based on an influence of a flow of the irrigation water.

[0134] The agricultural management assistance method according to the tenth aspect is based on the agricultural management assistance method according to any one of the second to eighth aspects.

[0135] The reference input amount for the plurality of areas indicates an input amount per unit area of ​​the input object for the entire field.

[0136] The agricultural management assistance method according to the eleventh aspect is based on the agricultural management assistance method according to any one of the first to tenth aspects.

[0137] The method further includes the step of displaying the input amounts for the plurality of areas based on the output information.

[0138] The agricultural management assistance method according to the twelfth aspect is based on the agricultural management assistance method according to any one of the first to tenth aspects.

[0139] The method further includes the step of: injecting the input objects into the plurality of areas based on the output information.

[0140] The agricultural operation assistance system referred to in the thirteenth method shall have:

[0141] a generating unit for generating regional input information indicating input amounts of input materials for a plurality of regions of the field based on inlet and outlet position information related to positions of an inlet and an outlet of the irrigation water provided in the field filled with the irrigation water; and

[0142] An information output unit outputs output information related to the area input information generated by the generation unit.

[0143] The program according to the fourteenth aspect causes a computer to execute the following steps:

[0144] generating regional input information indicating input amounts of input materials for a plurality of regions of the field based on inlet and outlet position information related to positions of an inlet and an outlet of the irrigation water provided in the field filled with the irrigation water; and

[0145] Output information related to the generated regional input information is output.

Claims

1. A method of assisting agricultural operations, wherein: The agricultural operation assistance method comprises the following steps: generating regional input information indicating input amounts of input materials for a plurality of regions of the field based on inlet and outlet position information related to positions of an inlet and an outlet of the irrigation water provided in the field filled with the irrigation water; and Output information related to the generated regional input information is output.

2. The agricultural operation assistance method according to claim 1, wherein: The step of generating the regional input information also includes the following steps: Determining, for each of the plurality of regions, a correction coefficient corresponding to an increase or decrease in the amount of input material retained in the region relative to the amount input into the region based on the relative position of the region relative to the water inlet and the water tail indicated by the inlet and outlet position information; and The input amounts of the input objects for the plurality of regions are determined based on the correction coefficient and the reference input amounts of the input objects for the plurality of regions.

3. The agricultural operation assistance method according to claim 2, wherein: The step of determining the correction coefficient comprises the following steps: determining a first correction coefficient for a first area based on the positions of the water inlet and the water tail, and determining a second correction coefficient for a second area located downstream of the first area in the flow direction of the irrigation water. When the same reference input amount is corrected, when the input amount of the input object is determined using the first correction coefficient, the determined input amount is increased compared to the case where the second correction coefficient is used.

4. The agricultural operation assistance method according to claim 2 or 3, wherein: The step of determining the correction coefficient further includes the step of determining the correction coefficient based on height information indicating the height of the soil surface of the plurality of regions.

5. The agricultural operation assistance method according to claim 4, wherein: The step of determining the correction coefficient includes the following steps: for a third area among the multiple areas, which is lower than the soil surface adjacent to the height information by an amount exceeding the prescribed height reference, the correction coefficient is determined in such a manner that the input amount of the input material shown in the input information of the area is increased compared to a case where the input amount is not lowered by an amount exceeding the height reference.

6. The agricultural operation assistance method according to claim 4, wherein: The agricultural operation support method further includes the step of generating the height information based on positioning information indicating a height of a working device that performs work in the field and outputted by the working device.

7. The agricultural operation assistance method according to claim 2, wherein: The step of determining the correction coefficient further includes the step of determining the correction coefficient based on soil information related to the viscosity of the soil in the plurality of regions.

8. The agricultural operation assistance method according to claim 7, wherein: Regarding the step of determining the correction coefficient, for a fourth area among the multiple areas where the viscosity of the soil indicated by the soil information is reduced by an amount exceeding a prescribed viscosity benchmark, the correction coefficient is determined in a manner such that the input amount of the input material indicated by the input information of the area is increased compared to a case where the viscosity of the soil is not reduced by an amount exceeding the viscosity benchmark.

9. The agricultural operation assistance method according to claim 2, wherein: The reference input amounts for the plurality of areas are determined based on pre-correction area input information indicating input amounts for the plurality of areas before correction based on an influence of a flow of the irrigation water.

10. The agricultural operation assistance method according to claim 2, wherein: The reference input amount for the plurality of areas indicates an input amount per unit area of ​​the input object for the entire field.

11. The agricultural operation assistance method according to claim 1, wherein: The agricultural operation assistance method further includes the step of displaying input amounts for the plurality of areas based on the output information.

12. The agricultural operation assistance method according to claim 1, wherein: The agricultural operation support method further includes the step of: inputting the inputs into the plurality of areas based on the output information.

13. An agricultural operation assistance system, wherein: The agricultural operation assistance system comprises: a generating unit for generating regional input information indicating input amounts of input materials for a plurality of regions of the field based on inlet and outlet position information related to positions of an inlet and an outlet of the irrigation water provided in the field filled with the irrigation water; as well as An information output unit outputs output information related to the area input information generated by the generation unit.

14. A program, wherein: The program is used to make the computer execute the following steps: generating regional input information indicating input amounts of input materials for a plurality of regions of the field based on inlet and outlet position information related to positions of an inlet and an outlet of the irrigation water provided in the field filled with the irrigation water; and Output information related to the generated regional input information is output.

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