Method and device for adjusting water and fertilizer irrigation

Abstract

The application provides a water and fertilizer irrigation adjusting method and device, the water and fertilizer irrigation adjusting method comprises the following steps: obtaining irrigation data and return liquid data of water and fertilizer irrigation work; in the case that the ratio of the irrigation data and the return liquid data does not belong to a target ratio range and the return liquid generated by the water and fertilizer irrigation work stops generating, obtaining the irrigation time length of the water and fertilizer irrigation work based on an irrigation time length adjusting formula, and automatically adjusting the irrigation parameters according to the operation mode, or sending the irrigation time length, the setting parameters provided by the water and fertilizer irrigation equipment and the parameter modification opinions to the terminal corresponding to the grower, so that the grower adjusts the irrigation parameters by using the terminal. The method provided by the application is suitable for water and fertilizer irrigation work in various greenhouse environments, reduces the difficulty and cost of transformation, is diversified in use, and has a certain automatic adjustment capability.

Description

Technical Field

[0001] This invention relates to the field of irrigation technology, and in particular to a method and apparatus for adjusting water and fertilizer irrigation. Background Technology

[0002] Currently, the amount of liquid return generated by multi-span greenhouses varies at different times due to factors such as crop cultivation techniques, climate conditions, irrigation duration, and manual labor. Controlling the amount of liquid return is of great significance for supporting crop growth.

[0003] In related technologies, irrigation volume in multi-span greenhouses is usually controlled by manually adjusting irrigation parameters. This is not only time-consuming and labor-intensive, but also requires a high level of management experience from growers, resulting in a low degree of automation in regulating crop growth. In addition, current automated regulation methods are based on weighing systems for irrigation auxiliary decision-making. However, the sample size of a single sampling by a weighing system is small, and the calculation results are prone to bias, leading to inappropriate irrigation strategies and production losses. Summary of the Invention

[0004] This invention provides a water and fertilizer irrigation adjustment method and apparatus to solve the problems of existing technologies that rely on manual adjustment of irrigation parameters to control the irrigation amount in multi-span greenhouses, which increases labor costs and results in inappropriate irrigation strategies due to the limited sampling of existing weighing systems. This invention improves the automation level of irrigation for crops in multi-span greenhouses.

[0005] This invention provides a water and fertilizer irrigation adjustment method, applied to water and fertilizer irrigation equipment, comprising:

[0006] Obtain irrigation data and return liquid data for water and fertilizer irrigation operations;

[0007] If the ratio of the irrigation data and the return liquid data is not within the target ratio range, and the return liquid generated by the water and fertilizer irrigation operation stops being generated, the irrigation duration of the water and fertilizer irrigation operation is obtained based on the irrigation duration adjustment formula, and the irrigation parameters are automatically adjusted according to the operation mode, or the irrigation duration, the setting parameters provided by the water and fertilizer irrigation equipment, and the parameter modification suggestions are sent to the grower's corresponding terminal so that the grower can use the terminal to adjust the irrigation parameters.

[0008] The irrigation duration adjustment formula is determined based on the return liquid data, the irrigation data, the return liquid ratio, the irrigation volume per unit time of the water and fertilizer irrigation operation, the single irrigation duration of the water and fertilizer irrigation operation, and the single irrigation volume of the water and fertilizer irrigation operation.

[0009] According to a water and fertilizer irrigation adjustment method provided by the present invention, the return liquid data includes the conductivity EC and the liquid hydrogen ion concentration pH in the return liquid; after obtaining the irrigation duration of the water and fertilizer irrigation operation, the method further includes:

[0010] Based on the ratio of the average value of EC on the day to the preset value of EC, and the first fertilizer absorption duration, the second fertilizer absorption duration of the water and fertilizer irrigation operation on the next day is obtained.

[0011] Based on the ratio of the average pH value during the first time period to the preset pH value, and the first acid absorption duration, the second acid absorption duration of the water and fertilizer irrigation operation on the following day is obtained.

[0012] According to the water and fertilizer irrigation adjustment method provided by the present invention, the irrigation duration adjustment formula is as follows:

[0013]

[0014] Where T is the irrigation duration, W r W represents the amount of return liquid generated during a single irrigation of the aforementioned water and fertilizer irrigation operation. i W represents the amount of water and fertilizer applied in a single irrigation operation. t W is the gain coefficient for the irrigation operation of the fertigation machine, and W is the set value of the return liquid ratio. ut The unit time irrigation volume is defined as follows, where W is the maximum value within the range of real-time liquid return ratio. t When the real-time return ratio is less than 1, W... t When the real-time return ratio is greater than 1, W is within the range of values ​​for W. t It equals 1.

[0015] According to a water and fertilizer irrigation adjustment method provided by the present invention, the water and fertilizer irrigation operation includes artificially assisted water and fertilizer irrigation operation. Before acquiring irrigation data and return liquid data of the water and fertilizer irrigation operation, the method further includes:

[0016] Acquire irrigation data and return liquid data for artificial assisted water and fertilizer irrigation operations, wherein the return liquid data includes the actual value of the return liquid ratio;

[0017] If the ratio of irrigation data to return liquid data is not within the target ratio range, the irrigation data, setting parameters, and parameter modification suggestions will be provided to the grower's corresponding terminal so that the grower can use the terminal to adjust the irrigation parameters.

[0018] Based on the preset value of the liquid return ratio and the actual value of the liquid return ratio, comparison information is obtained and sent to the management center. The comparison information is used to adjust the acid absorption time and fertilizer absorption time of the artificial assisted water and fertilizer irrigation operation.

[0019] According to a water and fertilizer irrigation adjustment method provided by the present invention, after obtaining the irrigation duration of the water and fertilizer irrigation operation, the method further includes:

[0020] If the water and fertilizer irrigation operation is completed within the day, the fertilizer and acid solution absorption parameters for the next day are adjusted according to the EC / pH adjustment formula, wherein the EC / pH adjustment formula is determined based on the preset EC / pH value, the EC / pH value of the returned liquid, the single irrigation duration of the water and fertilizer irrigation operation, and the single irrigation volume of the water and fertilizer irrigation operation.

[0021] This invention provides a water and fertilizer irrigation adjustment device, comprising:

[0022] The acquisition module is used to acquire irrigation data and return liquid data for water and fertilizer irrigation operations;

[0023] The first processing module is used to, when the ratio of the irrigation data and the return liquid data is not within the target ratio range, and the return liquid generated by the water and fertilizer irrigation operation stops being generated again, obtain the irrigation duration of the water and fertilizer irrigation operation based on the irrigation duration adjustment formula, and automatically adjust the irrigation parameters according to the operating mode, or send the irrigation duration, the setting parameters provided by the water and fertilizer irrigation equipment, and parameter modification suggestions to the grower's corresponding terminal, so that the grower can use the terminal to adjust the irrigation parameters; wherein, the irrigation duration adjustment formula is determined based on the return liquid data, the irrigation data, the return liquid ratio, the irrigation volume per unit time of the water and fertilizer irrigation operation, the single irrigation duration of the water and fertilizer irrigation operation, and the single irrigation volume of the water and fertilizer irrigation operation.

[0024] According to the present invention, a water and fertilizer irrigation adjustment device is provided, wherein the return liquid data includes the conductivity EC and the liquid hydrogen ion concentration pH in the return liquid, and the device further includes:

[0025] The second processing module is used to, after obtaining the irrigation duration of the water and fertilizer irrigation operation, obtain the second fertilizer absorption duration of the water and fertilizer irrigation operation on the next day based on the ratio of the average value of EC on the day to the preset value of EC and the first fertilizer absorption duration; and to obtain the second acid absorption duration of the water and fertilizer irrigation operation on the next day based on the ratio of the average value of pH on the day to the preset value of pH and the first acid absorption duration.

[0026] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the water and fertilizer irrigation adjustment method as described above.

[0027] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the water and fertilizer irrigation adjustment method as described above.

[0028] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the water and fertilizer irrigation adjustment method as described above.

[0029] The water and fertilizer irrigation adjustment method and device provided by this invention compares the ratio of irrigation data and return liquid data of water and fertilizer irrigation operations within the day with a target ratio range. When it is determined that the ratio of irrigation data and return liquid data is abnormal, the irrigation duration is calculated based on the irrigation duration adjustment formula. The irrigation data is automatically adjusted according to the equipment's operating mode, or the irrigation data is automatically sent to the grower. It is applicable to water and fertilizer irrigation operations in various greenhouse environments, reduces the difficulty and cost of modification, has diversified usage methods, and has a certain degree of automated adjustment capability. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is one of the flowcharts of the water and fertilizer irrigation adjustment method provided by the present invention;

[0032] Figure 2 This is a schematic diagram of the concave liquid return collection tank provided by the present invention;

[0033] Figure 3 This is the second flowchart of the water and fertilizer irrigation adjustment method provided by the present invention;

[0034] Figure 4 This is a schematic diagram of the water and fertilizer irrigation adjustment device provided by the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0037] The following is combined with Figures 1-4 The present invention describes a water and fertilizer irrigation adjustment method and apparatus.

[0038] Figure 1 This is one of the flowcharts illustrating the water and fertilizer irrigation adjustment method provided by the present invention, such as... Figure 1 As shown, this water and fertilizer irrigation adjustment method, applied to water and fertilizer irrigation equipment, includes the following steps:

[0039] Step 110: Obtain irrigation data and return liquid data for water and fertilizer irrigation operations.

[0040] In this step, irrigation data and return liquid data for the day's irrigation operations can be obtained through the water and fertilizer irrigation equipment.

[0041] In this embodiment, the time range within a day can be customized according to actual needs, for example, it can be any time period in the early morning, morning or night of a day.

[0042] In this step, the irrigation data can be the total amount of irrigation carried out by water and fertilizer irrigation operations within the day.

[0043] In this embodiment, irrigation data can be acquired using a first flow sensor for measuring irrigation flow rate.

[0044] In this step, the return liquid data can be the total return liquid volume of the water and fertilizer irrigation operation within the day.

[0045] In this embodiment, the return liquid data can be obtained through a second flow sensor used to measure the return liquid flow rate.

[0046] Step 120: If the ratio of irrigation data to return liquid data is not within the target ratio range, and the return liquid generated by the water and fertilizer irrigation operation stops being generated, the irrigation duration of the water and fertilizer irrigation operation is obtained based on the irrigation duration adjustment formula. The irrigation parameters are then automatically adjusted according to the operation mode, or the irrigation duration, the setting parameters provided by the water and fertilizer irrigation equipment, and the parameter modification suggestions are sent to the grower's corresponding terminal so that the grower can use the terminal to adjust the irrigation parameters.

[0047] In this step, when irrigating crops in the multi-span greenhouse, the ratio of real-time irrigation data and return liquid data can be compared and analyzed with a preset ratio to adjust the irrigation duration for the next irrigation of the day.

[0048] In this step, the target ratio range can be customized according to actual needs. The target ratio range is the normal setting range for the irrigation and return liquid ratio.

[0049] In this embodiment, the irrigation amount is adjusted only for the current day. After the return liquid is generated again and stops being generated, the irrigation duration is adjusted for the next day, and then reset the next day. Only the EC and pH adjustments will affect the next day.

[0050] In some embodiments, the water and fertilizer irrigation equipment may include a manual mode and an automatic mode during water and fertilizer irrigation operations. In the manual mode, the user needs to manually input parameters for setting, while in the automatic mode, the irrigation data can be automatically adjusted according to a preset program or instructions.

[0051] In this embodiment, in the automatic mode of the device, the irrigation volume (i.e., single irrigation volume) of the irrigation pipeline can be automatically measured according to instructions before the seedlings are planted.

[0052] In this embodiment, the first flow sensor and the second flow sensor are used to measure the real-time total irrigation volume and total return liquid volume of crops in the multi-span greenhouse on the same day, respectively, and the ratio of the total irrigation volume to the total return liquid volume is calculated. Then, the ratio of the total irrigation volume to the total return liquid volume is compared and analyzed with the target ratio range to automatically obtain the irrigation time required for the next irrigation.

[0053] The water and fertilizer irrigation adjustment method provided by this invention compares the ratio of irrigation data and return liquid data of water and fertilizer irrigation operations within the day with a target ratio range. When it is determined that the ratio of irrigation data and return liquid data is abnormal, the irrigation duration is calculated based on the irrigation duration adjustment formula. The irrigation data is automatically adjusted according to the equipment's operating mode, or the irrigation data is automatically sent to the grower. It is suitable for water and fertilizer irrigation operations in greenhouse environments, reduces the difficulty and cost of modification, has diversified usage methods, and has a certain degree of automated adjustment capability.

[0054] In some embodiments, the return liquid data includes the electrical conductivity (EC) and the liquid hydrogen ion concentration (pH) in the return liquid; after obtaining the irrigation duration of the fertigation operation, the method further includes: obtaining a second fertilizer absorption duration of the fertigation operation on the next day based on the ratio of the average value of EC within the day to a preset value of EC and the first fertilizer absorption duration; and obtaining a second acid absorption duration of the fertigation operation on the next day based on the ratio of the average value of pH within the day to a preset value of pH and the first acid absorption duration.

[0055] It should be noted that the main components of the backflow solution generated during irrigation are EC and pH. The backflow solution has a flushing effect on the substrate itself. Too little backflow solution will lead to the accumulation of fertilizer elements in the substrate, inhibiting crop root growth. Too much backflow solution will lead to insufficient fertilizer elements in the substrate, slowing down crop growth. Since crops need more fertilizer elements to grow at night, the amount of backflow solution generated should decrease from more to less towards the end of irrigation. Furthermore, the EC and pH of the backflow solution are different at different irrigation times. Therefore, properly controlling the EC and pH in the backflow solution helps regulate crop elongation.

[0056] In this embodiment, the EC and pH in the returned liquid generated on the same day can be measured in real time using sensors for detecting EC and pH in the returned liquid. For example, EC data and pH data in the returned liquid can be collected in real time using EC sensors and pH sensors respectively.

[0057] Figure 2 This is a schematic diagram of the concave return liquid collection tank provided by the present invention. Figure 2 In the illustrated embodiment, a valve 5, an EC sensor 6, a pH sensor 7, and a water pump 8 are sequentially installed on a pipe at the bottom of the concave return liquid collection tank. A return liquid tank 14 is located on the side of the valve facing away from the EC sensor to collect the return liquid transported from the return liquid collection pipe 13. An upper level switch 3 is located near the top of the return liquid tank, and a lower level switch 4 is located at the bottom of the return liquid tank. The upper and lower level switches can be used to control the flow rate of the return liquid stored in the return liquid tank. A return liquid flow sensor 9 is installed on the pipe between the return liquid collection pipe 13 and the return liquid tank 14 to measure the flow rate of the return liquid in the return liquid collection pipe 13. Additionally, the concave return liquid collection tank also includes multiple substrate planting strips 10 and multiple... The substrate planting area 11 contains multiple crop planting areas 11, which can be used to grow various types of crops. The two ends of the substrate planting area 10 are connected to the irrigation pipe 12 and the return liquid collection pipe 13 respectively through pipes. The irrigation pipe is used to transport the water and fertilizer required for irrigation. An irrigation flow sensor 1 is also installed on the irrigation pipe to measure the water and fertilizer flow data during irrigation. When the high liquid level sensor is triggered or the real time reaches sunset, the valve 5 and water pump 8 on the pipe are opened, and the EC sensor 6 and pH sensor 7 acquire data in real time. When the low liquid level switch of the return liquid tank is triggered, the valve 5 and water pump 8 on the pipe are closed, and the EC sensor 6 and pH sensor 7 stop collecting data.

[0058] In some embodiments, the average EC and average pH of the day can be calculated based on the sampling time and data accumulation of the EC and pH data of the return liquid. By comparing with the set values, the running time of fertilizer and acid absorption on the next day can be adjusted proportionally.

[0059] In this embodiment, the first fertilizer absorption time is the periodic fertilizer absorption time during water and fertilizer irrigation, and the first acid absorption time is the periodic acid absorption time during water and fertilizer irrigation. Both the first fertilizer absorption time and the first acid absorption time can be customized according to actual needs.

[0060] In this embodiment, when the water pump on the pipe of the concave return liquid collection tank is running, the EC value and pH value are read once per second, and the readings are continuously accumulated. The accumulated number divided by the water pump running time (seconds) can be used to obtain the average EC value and the average pH value, respectively. Assuming that the average EC value is 8000, the set EC value is 6000, and the cycle fertilizer absorption time is 5 seconds, then the fertilizer absorption time on the next day = set EC value / average EC value * cycle fertilizer absorption time = 6000 / 8000 * 5 = 3.75 seconds; similarly, the acid absorption time on the next day = set pH value / average pH value * cycle acid absorption time.

[0061] In this embodiment, the preset values ​​of EC and pH can be customized according to actual needs.

[0062] The water and fertilizer irrigation adjustment method provided by this invention obtains the average value of EC and the average value of pH in the return liquid generated by real-time water and fertilizer irrigation operations, compares them with the corresponding preset values, and then calculates the fertilizer absorption time and acid absorption time for the next day. It can realize automatic control of water and fertilizer irrigation operations in combination with the physiological needs of crops, without the need for manual parameter adjustment, thus reducing the interference of manual operations.

[0063] In some embodiments, the irrigation duration adjustment formula is as follows:

[0064]

[0065] Where T is the irrigation duration, W r W represents the amount of return liquid generated during a single irrigation in a water and fertilizer irrigation operation. i W represents the amount of water and fertilizer applied in a single irrigation operation. t W is the gain coefficient for the fertigation operation, and W is the set value for the return liquid ratio. ut W represents the irrigation volume per unit time in water and fertilizer irrigation operations. When the real-time liquid return ratio exceeds the maximum value within the range of W, W... t When the real-time return ratio is less than 1, W... t When the real-time return ratio is greater than 1, W is within the range of values ​​for W. t It equals 1.

[0066] In this embodiment, the return liquid data generated by the water and fertilizer irrigation operation can be the return liquid volume of the water and fertilizer irrigation operation, while the irrigation data of the water and fertilizer irrigation operation can be the irrigation volume of the water and fertilizer irrigation operation.

[0067] In this embodiment, when the ratio of irrigation data to return liquid data is greater than the target ratio range, it indicates that the amount of return liquid generated is too small. Insufficient return liquid will lead to the enrichment of fertilizer elements in the substrate and inhibit the growth of crop roots.

[0068] In this embodiment, W and W are pre-set in the water and fertilizer irrigation equipment.t and W ut The value is determined, and based on the acquired irrigation and return liquid data, when the ratio of irrigation data to return liquid data is greater than the preset ratio, the water and fertilizer irrigation equipment automatically calculates the irrigation duration for the next water and fertilizer irrigation operation according to the irrigation duration adjustment formula when the return liquid production stops.

[0069] In this embodiment, when the return ratio is greater than a reasonable range for W, W t When the return ratio is less than 1, W should be less than the reasonable range for W. t When the return ratio is within a reasonable range for W, W should be greater than 1. The reasonable range for W can be set according to user requirements.

[0070] The water and fertilizer irrigation adjustment method provided by this invention obtains parameters such as irrigation duration, return liquid volume generated by a single irrigation operation, single irrigation volume gain coefficient, return liquid ratio, and irrigation volume per unit time. When the ratio of irrigation data and return liquid data differs from the target ratio range, the irrigation duration of the next irrigation operation is adjusted based on the irrigation duration. This achieves automated control of water and fertilizer irrigation operations without the need for manual parameter adjustment.

[0071] In some embodiments, the water and fertilizer irrigation operation includes artificial assisted water and fertilizer irrigation operation. Before acquiring the irrigation data and return liquid data of the water and fertilizer irrigation operation, the process includes: acquiring the irrigation data and return liquid data of the artificial assisted water and fertilizer irrigation operation, wherein the return liquid data includes the actual value of the return liquid ratio; if the ratio of the irrigation data and the return liquid data is not within the target ratio range, providing the irrigation data, setting parameters, and parameter modification suggestions to the grower's corresponding terminal so that the grower can use the terminal to adjust the irrigation parameters; obtaining comparison information based on the preset value and the actual value of the return liquid ratio, and sending the comparison information to the management center, wherein the comparison information is used to adjust the acid absorption duration and fertilizer absorption duration of the artificial assisted water and fertilizer irrigation operation on the following day.

[0072] In this embodiment, the water and fertilizer irrigation equipment can include a manual mode and an automatic mode during water and fertilizer irrigation operations. When the water and fertilizer irrigation equipment receives a user instruction to select the manual mode, the management personnel compare the actual value of the return liquid ratio collected during the water and fertilizer irrigation operation on the same day with the preset value of the return liquid ratio. The management center obtains the average value of the EC data and the average value of the pH data by using EC sensor and pH sensor to collect EC data and pH data on the same day. Combined with the periodic fertilizer absorption time or periodic acid absorption time, the fertilizer absorption time or acid absorption time of the water and fertilizer irrigation operation on the next day is manually calculated. The water and fertilizer irrigation equipment is then controlled to absorb fertilizer or acid according to the fertilizer absorption time or acid absorption time on the next day.

[0073] In some implementation examples, the duration of acid uptake and fertilizer uptake on the following day is obtained manually, and the real-time data for calculating the duration of acid uptake and fertilizer uptake can be obtained in real time through the corresponding sensors.

[0074] The water and fertilizer irrigation adjustment method provided by this invention enables the manual acquisition of acid absorption and fertilizer absorption durations for the next day's water and fertilizer irrigation operations by setting up manual assisted water and fertilizer irrigation operations, and improves the flexibility of water and fertilizer irrigation operations by combining them with automated control of water and fertilizer irrigation operations.

[0075] In some embodiments, after obtaining the irrigation duration of the water and fertilizer irrigation operation, the method further includes: if the water and fertilizer irrigation operation is completed within the day, adjusting the fertilizer and acid solution absorption parameters for the next day according to the EC / pH adjustment formula, wherein the EC / pH adjustment formula is determined based on the EC / pH preset value and the EC / pH value of the return solution.

[0076] In this embodiment, the return liquid data generated by the water and fertilizer irrigation operation can be the return liquid volume of the water and fertilizer irrigation operation, while the irrigation data of the water and fertilizer irrigation operation can be the irrigation volume of the water and fertilizer irrigation operation.

[0077] In this embodiment, when the ratio of irrigation data to return liquid data is less than the target ratio range, it indicates that too much return liquid is generated. Excessive return liquid will lead to insufficient fertilizer elements in the substrate strip, thereby slowing down crop growth.

[0078] In this embodiment, the EC / pH preset value can be customized according to actual needs.

[0079] The water and fertilizer irrigation adjustment method provided by this invention reduces the amount of manual parameter setting and realizes automated water and fertilizer irrigation operations by adjusting the fertilizer and acid solution absorption parameters for the next day according to the EC / pH formula after the water and fertilizer irrigation operation is completed on the same day.

[0080] Figure 3 This is the second flowchart illustrating the water and fertilizer irrigation adjustment method provided by the present invention. Figure 3 In the illustrated embodiment, when only the irrigation volume and return volume are available, the total return volume ratio is adjusted. When adjusting irrigation parameters, the EC and pH adjustments remain consistent with the previous one. After return volume is generated, the transpiration rate between two consecutive irrigations is not significant when the single irrigation time is short (within 5 minutes). Therefore, for each irrigation process after return volume is generated, the transpiration rate can be calculated by calculating the difference between the single irrigation volume and the return volume. This is used to estimate the return volume to be generated in the next irrigation, thereby adjusting the irrigation volume and controlling the return volume ratio. This can be achieved through the following steps:

[0081] Step 1: When the first liquid return occurs, it can be determined that every subsequent irrigation will produce liquid return. It should be noted that the first few irrigations each day will replenish the evaporation at night. When liquid return occurs, it indicates that the substrate is saturated with liquid.

[0082] Step 2: After the return liquid is generated, subtract the return liquid volume n1 generated during this irrigation from the single irrigation volume m1 to obtain the transpiration volume k1 between this irrigation and the previous irrigation.

[0083] Step 3. Multiply the single irrigation volume m1 by the return liquid ratio L to obtain the minimum return liquid volume n2 that should be generated per irrigation (for example, set the target value to 20%. Since no return liquid will be generated during the first few irrigations of the day, the single irrigation volume should be greater than k1+n2). k1+n2 is the minimum value of a single irrigation. Appropriately changing this value can optimize the return liquid ratio. Where n1>n2, the irrigation volume can be reduced according to the needs, and vice versa, thereby adjusting the single irrigation volume, and continuously repeating the process of steps 2 and 3.

[0084] Step 4: When the real-time return liquid ratio is close to the set value of the return liquid ratio, the single irrigation volume can be set to k1+n2.

[0085] The water and fertilizer irrigation adjustment device provided by the present invention is described below. The water and fertilizer irrigation adjustment device described below can be referred to in correspondence with the water and fertilizer irrigation adjustment method described above.

[0086] Figure 4 This is a schematic diagram of the water and fertilizer irrigation adjustment device provided by the present invention, as shown below. Figure 4 As shown, the water and fertilizer irrigation adjustment device includes: an acquisition module 410 and a first processing module 420.

[0087] The acquisition module 410 is used to acquire irrigation data and return liquid data of water and fertilizer irrigation operations;

[0088] The first processing module 420 is used to obtain the irrigation duration of the water and fertilizer irrigation operation based on the irrigation duration adjustment formula when the ratio of irrigation data and return liquid data is not within the target ratio range and the return liquid generated by the water and fertilizer irrigation operation stops being generated. It also automatically adjusts the irrigation parameters according to the operating mode, or sends the irrigation duration, the setting parameters provided by the water and fertilizer irrigation equipment, and parameter modification suggestions to the grower's corresponding terminal so that the grower can adjust the irrigation parameters using the terminal. The irrigation duration adjustment formula is determined based on the return liquid data, irrigation data, return liquid ratio, irrigation volume per unit time of the water and fertilizer irrigation operation, the single irrigation duration of the water and fertilizer irrigation operation, and the single irrigation volume of the water and fertilizer irrigation operation.

[0089] The water and fertilizer irrigation adjustment device provided by this invention compares the ratio of irrigation data and return liquid data of water and fertilizer irrigation operations within the day with a target ratio range. When it is determined that the ratio of irrigation data and return liquid data is abnormal, the irrigation duration is calculated based on the irrigation duration adjustment formula. The irrigation data is automatically adjusted according to the equipment's operating mode, or the irrigation data is automatically sent to the grower. It is suitable for water and fertilizer irrigation operations in greenhouse environments, reduces the difficulty and cost of modification, has diversified usage methods, and has a certain degree of automated adjustment capability.

[0090] In some embodiments, the return liquid data includes the electrical conductivity EC and the liquid hydrogen ion concentration pH in the return liquid, and the water and fertilizer irrigation adjustment device further includes:

[0091] The second processing module is used to, after obtaining the irrigation duration of the water and fertilizer irrigation operation, obtain the second fertilizer absorption duration of the water and fertilizer irrigation operation on the next day based on the ratio of the average value of EC on the day to the preset value of EC and the first fertilizer absorption duration; and to obtain the second acid absorption duration of the water and fertilizer irrigation operation on the next day based on the ratio of the average value of pH on the day to the preset value of pH and the first acid absorption duration.

[0092] The water and fertilizer irrigation adjustment device provided by the present invention obtains the average value of EC and the average value of pH in the return liquid generated by water and fertilizer irrigation operations on the same day, compares them with the corresponding preset values, and then calculates the fertilizer absorption time and acid absorption time for the next day. It can realize automatic control of water and fertilizer irrigation operations in combination with the physiological needs of crops, without the need for manual parameter adjustment, thus reducing the interference of manual operations.

[0093] Figure 5 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 5As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530, and a communication bus 540, wherein the processor 510, the communication interface 520, and the memory 530 communicate with each other through the communication bus 540. The processor 510 can call logic instructions in the memory 530 to execute a water and fertilizer irrigation adjustment method. This method includes: acquiring irrigation data and return liquid data of water and fertilizer irrigation operations; when the ratio of irrigation data and return liquid data is not within the target ratio range, and the return liquid generated by the water and fertilizer irrigation operation stops being generated, obtaining the irrigation duration of the water and fertilizer irrigation operation based on the irrigation duration adjustment formula, and automatically adjusting the irrigation parameters according to the operating mode, or sending the irrigation duration, the setting parameters provided by the water and fertilizer irrigation equipment, and parameter modification suggestions to the grower's corresponding terminal so that the grower can adjust the irrigation parameters using the terminal; wherein, the irrigation duration adjustment formula is determined based on return liquid data, irrigation data, return liquid ratio, irrigation volume per unit time of water and fertilizer irrigation operation, single irrigation duration of water and fertilizer irrigation operation, and single irrigation volume of water and fertilizer irrigation operation.

[0094] Furthermore, the logical instructions in the aforementioned memory 530 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0095] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the water and fertilizer irrigation adjustment method provided by the above methods. The method includes: acquiring irrigation data and return liquid data of water and fertilizer irrigation operations; when the ratio of irrigation data and return liquid data is not within the target ratio range, and the return liquid generated by the water and fertilizer irrigation operation stops being generated, obtaining the irrigation duration of the water and fertilizer irrigation operation based on the irrigation duration adjustment formula, and automatically adjusting the irrigation parameters according to the operating mode, or sending the irrigation duration, the setting parameters provided by the water and fertilizer irrigation equipment, and parameter modification opinions to the grower's corresponding terminal so that the grower can adjust the irrigation parameters using the terminal; wherein, the irrigation duration adjustment formula is determined based on return liquid data, irrigation data, return liquid ratio, irrigation volume per unit time of water and fertilizer irrigation operation, single irrigation duration of water and fertilizer irrigation operation, and single irrigation volume of water and fertilizer irrigation operation.

[0096] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program implements the water and fertilizer irrigation adjustment method provided by the above methods. The method includes: acquiring irrigation data and return liquid data of water and fertilizer irrigation operations; when the ratio of irrigation data and return liquid data is not within a target ratio range, and the return liquid generated by the water and fertilizer irrigation operation stops being generated, obtaining the irrigation duration of the water and fertilizer irrigation operation based on the irrigation duration adjustment formula, and automatically adjusting the irrigation parameters according to the operating mode, or sending the irrigation duration, the setting parameters provided by the water and fertilizer irrigation equipment, and parameter modification suggestions to the grower's corresponding terminal, so that the grower can use the terminal to adjust the irrigation parameters; wherein, the irrigation duration adjustment formula is determined based on return liquid data, irrigation data, return liquid ratio, irrigation volume per unit time of water and fertilizer irrigation operation, single irrigation duration of water and fertilizer irrigation operation, and single irrigation volume of water and fertilizer irrigation operation.

[0097] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0098] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for adjusting water and fertilizer irrigation, applied to water and fertilizer irrigation equipment, characterized in that, include: Irrigation data and return liquid data of water and fertilizer irrigation operations are obtained by using a concave return liquid collection tank. The concave return liquid collection tank is connected to multiple substrate planting zones and crop planting areas through a return liquid collection pipe. A valve, EC sensor, pH sensor and water pump are installed in sequence on the pipe at the bottom of the concave return liquid collection tank. A return liquid flow sensor for measuring the return liquid flow rate of the entire area is installed on the pipe between the return liquid collection pipe and the concave return liquid collection tank. If the ratio of the irrigation data and the return liquid data is not within the target ratio range, and the return liquid generated by the water and fertilizer irrigation operation stops being generated, the irrigation duration of the water and fertilizer irrigation operation is obtained based on the irrigation duration adjustment formula, and the irrigation parameters are automatically adjusted according to the operation mode, or the irrigation duration, the setting parameters provided by the water and fertilizer irrigation equipment, and the parameter modification suggestions are sent to the grower's corresponding terminal so that the grower can use the terminal to adjust the irrigation parameters. The irrigation duration adjustment formula is determined based on the return liquid data, the irrigation data, the return liquid ratio, the irrigation volume per unit time of the fertigation operation, the single irrigation duration of the fertigation operation, and the single irrigation volume of the fertigation operation; the return liquid data includes the conductivity EC and the liquid hydrogen ion concentration pH in the return liquid; after obtaining the irrigation duration of the fertigation operation, the method further includes: Based on the ratio of the average value of EC on the day to the preset value of EC, and the first fertilizer absorption time, the second fertilizer absorption time of the water and fertilizer irrigation operation on the next day is obtained. Based on the ratio of the average pH value for the day to the preset pH value, and the first acid absorption duration, the second acid absorption duration for the irrigation operation on the following day is obtained; the irrigation duration adjustment formula is: ， Where T is the irrigation duration, W r W represents the amount of return liquid generated during a single irrigation in the aforementioned water and fertilizer irrigation operation. i W represents the amount of water and fertilizer applied in a single irrigation operation. t W is the gain coefficient of the water and fertilizer irrigation operation, and W is the set value of the liquid return ratio. ut The unit time irrigation volume is defined as follows, where W is the maximum value within the range of real-time liquid return ratio. t When the real-time return ratio is less than 1, W... t When the real-time return ratio is greater than 1, W is within the range of values ​​for W. t It equals 1; After obtaining the irrigation duration of the water and fertilizer irrigation operation, the method further includes: If the water and fertilizer irrigation operation is completed within the day, the fertilizer and acid solution absorption parameters for the next day are adjusted according to the EC / pH adjustment formula, wherein the EC / pH adjustment formula is determined based on the preset EC / pH value, the EC / pH value of the returned liquid, the single irrigation duration of the water and fertilizer irrigation operation, and the single irrigation volume of the water and fertilizer irrigation operation.

2. The water and fertilizer irrigation adjustment method according to claim 1, characterized in that, The water and fertilizer irrigation operation includes manually assisted water and fertilizer irrigation operation. Before acquiring irrigation data and return liquid data of the water and fertilizer irrigation operation, the method further includes: Acquire irrigation data and return liquid data for artificial assisted water and fertilizer irrigation operations, wherein the return liquid data includes the actual value of the return liquid ratio; If the ratio of irrigation data to return liquid data is not within the target ratio range, the irrigation data, setting parameters, and parameter modification suggestions will be provided to the grower's corresponding terminal so that the grower can use the terminal to adjust the irrigation parameters. Based on the preset value of the liquid return ratio and the actual value of the liquid return ratio, comparison information is obtained and sent to the management center. The comparison information is used to adjust the acid absorption time and fertilizer absorption time of the artificial assisted water and fertilizer irrigation operation.

3. A water and fertilizer irrigation adjustment device, employing the water and fertilizer irrigation adjustment method as described in claim 1, characterized in that, include: The acquisition module is used to acquire irrigation data and return liquid data of water and fertilizer irrigation operations using a concave return liquid collection tank. The concave return liquid collection tank is connected to multiple substrate planting zones and crop planting areas through a return liquid collection pipe. A valve, EC sensor, pH sensor and water pump are installed in sequence on the pipe at the bottom of the concave return liquid collection tank. A return liquid flow sensor for measuring the return liquid flow rate of the entire area is installed on the pipe between the return liquid collection pipe and the concave return liquid collection tank. The first processing module is used to obtain the irrigation duration of the water and fertilizer irrigation operation based on the irrigation duration adjustment formula when the ratio of the irrigation data and the return liquid data is not within the target ratio range and the return liquid generated by the water and fertilizer irrigation operation stops being generated again. The module can also automatically adjust the irrigation parameters according to the operation mode, or send the irrigation duration, the setting parameters provided by the water and fertilizer irrigation equipment and the parameter modification suggestions to the grower's corresponding terminal so that the grower can use the terminal to adjust the irrigation parameters. The irrigation duration adjustment formula is determined based on the return liquid data, the irrigation data, the return liquid ratio, the irrigation volume per unit time of the water and fertilizer irrigation operation, the single irrigation duration of the water and fertilizer irrigation operation, and the single irrigation volume of the water and fertilizer irrigation operation.

4. The water and fertilizer irrigation adjustment device according to claim 3, characterized in that, The water and fertilizer irrigation operation includes manually assisted water and fertilizer irrigation operation, and the acquisition module is further used for: Before acquiring irrigation data and return liquid data for water and fertilizer irrigation operations, acquire irrigation data and return liquid data for artificially assisted water and fertilizer irrigation operations, wherein the return liquid data includes the actual value of the return liquid ratio; If the ratio of irrigation data to return liquid data is not within the target ratio range, the irrigation data, setting parameters, and parameter modification suggestions will be provided to the grower's corresponding terminal so that the grower can use the terminal to adjust the irrigation parameters. Based on the preset value of the liquid return ratio and the actual value of the liquid return ratio, comparison information is obtained and sent to the management center. The comparison information is used to adjust the acid absorption time and fertilizer absorption time of the artificial assisted water and fertilizer irrigation operation.

5. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the water and fertilizer irrigation adjustment method as described in any one of claims 1 to 2.

6. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the water and fertilizer irrigation adjustment method as described in any one of claims 1 to 2.

7. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the water and fertilizer irrigation adjustment method as described in any one of claims 1 to 2.

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