Uniform mixing equipment based on rice field water and fertilizer monitoring and pesticide and fertilizer proportioning and use method

Abstract

The invention discloses uniform mixing equipment based on rice field water and fertilizer monitoring and pesticide-fertilizer proportioning and a use method, relates to the technical field of pesticide-fertilizer uniform mixing, and aims to solve the problem that an existing uniform mixing device cannot adjust the proportion of various elements in pesticide-fertilizer in real time according to components of rice field water quality. The first water quality detection head and the second water quality detection head are used for detecting data of water quality at different depths in a paddy field, the content of nitrogen and phosphorus in the water quality is analyzed through the water quality analyzer, and the monitored water is transmitted out through the remote data transmission module. The remote data transmission module controls the electric valve group to be opened; the flow meter monitors the input proportion of each raw material and transmits the input proportion to the control module through a data line; when the input raw material reaches a preset volume, the electric valve is controlled to be closed; and starting the stirring motor to stir and mix uniformly.

Description

Technical Field

[0001] The present invention relates to the technical field of drug-fertilizer mixing, and in particular to a device for mixing drug-fertilizer ratios based on paddy field water and fertilizer monitoring and a method for using the device. Background Art

[0002] In the field of rice cultivation, integrated water and fertilizer management is crucial to improving yield and quality, but existing fertilizer mixing devices have significant technical defects: traditional devices rely on fixed formulas or empirical values for proportioning, lack dynamic adaptability, and cannot monitor the content of nitrogen, phosphorus and other nutrients in water at different depths in rice fields in real time, resulting in a disconnect between fertilization plans and actual field needs.

[0003] Single-point sampling or shallow detection methods are difficult to capture the compositional differences in the vertical profile of the water body, and the lag and errors of manual sampling, offline analysis and manual control further reduce management accuracy, which can easily lead to nutrient excess, resource waste and water pollution problems.

[0004] In response to the above-mentioned shortcomings, the present invention proposes an intelligent pesticide-fertilizer mixing device, which realizes the precise collection of paddy field water stratification parameters through multi-level water quality detection heads, combines water quality analyzers with remote data transmission modules to build an intelligent closed-loop control system, calculates and dynamically adjusts the pesticide-fertilizer ratio in real time, and utilizes the linkage control of electric valve groups, flow meters and stirring motors to automatically complete efficient mixing after reaching the preset input amount, thereby solving the problems of extensive and lagging traditional management and providing technical support for precise fertilization in paddy fields.

[0005] The existing fertilizer mixing device has the following shortcomings: Lack of real-time monitoring capabilities for various components within rice paddies leads to delayed adjustments to the ratios of fertilizers and pesticides: Traditional fertilizer-mixing devices often lack integrated water quality detection capabilities or are equipped with only simple detection modules, making it impossible to accurately and accurately obtain data on the specific composition of water bodies at different depths in paddy fields in real time. This results in fertilization decisions relying on empirical judgment or fixed formulas, making it difficult to dynamically adjust the fertilizer-mixing ratio based on the actual growth needs of rice and changes in water quality. This can easily lead to resource waste and nutrient imbalances. Therefore, there is an urgent need for fertilizer-mixing equipment that can adjust the raw material ratio based on the content of various components in farmland water quality. Summary of the Invention

[0006] The main purpose of the present invention is to provide a device based on paddy field water and fertilizer monitoring and fertilizer ratio mixing that can effectively solve the problems in the background technology.

[0007] To achieve the above object, the technical solution adopted by the present invention is: A device for monitoring water and fertilizer in rice fields and mixing pesticide and fertilizer ratios, comprising a mixing tank body, a water quality monitoring component, and a data cable. A raw material input pipeline is fixedly connected to the top of the mixing tank body, an electric valve group is disposed in the middle of the raw material input pipeline, a flow meter is disposed at the front end of the electric valve group, a control module is disposed at the top end of the electric valve group, and the rear end of the flow meter is connected to the control module via a data cable passing through the electric valve group. The flow meter transmits data on the raw material volume passing through the control module via the data cable, and the control module controls the opening and closing of the electric valve group. The water quality monitoring assembly includes a collection device body, a water quality analyzer, a first water quality detection head, a second water quality detection head, a fixed support column is provided at the lower end of the collection device body, the water quality analyzer is provided at the bottom end inside the fixed support column, the data line is connected to the upper end of the water quality analyzer, the first water quality detection head and the second water quality detection head are respectively provided at the lower end of the water quality analyzer, and the first water quality detection head and the second water quality detection head pass through the collection device body, and a remote data transmission module is provided on the side of the inner wall of the collection device body; The water quality analyzer transmits the analyzed data to the remote data transmission module via a data line provided at the upper end.

[0008] As a further solution of the present invention, a motor load-bearing frame is installed on the upper end of the stirring tank body, a stirring motor is installed on the upper end of the motor load-bearing frame, the output shaft of the stirring motor is connected to a transmission rod, and stirring blades are installed on the side of the transmission rod. A rotating base is installed at the bottom of the stirring tank body, and the bottom end of the transmission rod is inserted into the rotating base.

[0009] As a further solution of the present invention, a battery pack is arranged at the upper end of the main body of the collection device, a connecting column is arranged at the upper end of the main body of the collection device, a solar panel is arranged at the upper end of the connecting column, and the lower end of the solar panel is connected to the battery pack through a data line passing through the connecting column.

[0010] As a further solution of the present invention, the rotating base is waterproofed, the stirring blades are provided with upper and lower double layers, and the number of the raw material input pipes can be increased as the types of raw materials increase.

[0011] As a further solution of the present invention, the stirring motor, the electric valve group and the flow meter are all provided with power connectors on the side, and the power connectors are connected to an external power supply. As a further solution of the present invention, a water and fertilizer output pipe is provided at the lower end of the side surface of the mixing tank body, and a ball valve is provided at the front end of the water and fertilizer output pipe.

[0012] As a further solution of the present invention, a data line is provided at the lower end of the battery pack to connect to the water quality analyzer, and the battery pack supplies energy to the water quality analyzer through the data line. A partition layer is provided between the battery pack and the water quality analyzer.

[0013] As a further solution of the present invention, the first water quality detection head is inserted into the shallow water layer of the rice field, and the second water quality detection head is inserted into the deep water layer of the rice field.

[0014] A method for monitoring water and fertilizer in rice fields and adjusting the ratio of pesticides and fertilizers, comprising the following steps: S1: The water quality analyzer is started. The water quality analyzer uses water quality probes 1 and 2 to collect nitrogen and phosphorus content and water quality information at different depths in the rice field. The water quality analyzer analyzes the collected data and transmits the processed data to the remote data transmission module. S2: The remote data transmission module converts the processed data into digital signals and transmits them back to the staff; S3: The staff analyzes the collected data and determines the amount of each raw material to be added; S4: The staff inputs the proportions of each component into the control module. The control module sets the addition amount of each raw material as a threshold value. The control module controls the electric valve group to open, and the raw materials flow into the mixing tank body along the raw material input pipeline. The flow meter starts to measure the volume of the raw materials flowing into each pipeline and transmits it to the control module via the data line; S5: When the inflow volume of a certain raw material input pipeline reaches a set threshold, the control module controls the electric valve group to close the valve of the corresponding pipeline; S6: When all raw materials reach the threshold, the control module controls the electric valve group to close all valves; S7: Start the stirring motor to stir and mix the raw materials; S8: After stirring is completed, stop the stirring motor and open the ball valve to take out the fertilizer; S9: Clean the inside of the mixing tank, fill and transport the fertilizer.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention sets a collection device body, uses water quality detection head 1 and water quality detection head 2 to detect water quality data at different depths in the rice field, analyzes the nitrogen and phosphorus content in the water through a water quality analyzer, transmits the monitored data through a remote data transmission module, analyzes the returned data to determine the required proportion of each component in the fertilizer water, converts the digital signal into a digital signal and transmits it to the remote data transmission module, the remote data transmission module controls the electric valve group to open, the flow meter monitors the input ratio of each raw material and transmits it to the control module through a data line, when the input raw material reaches a preset volume, controls the electric valve to close, starts the stirring motor to stir and mix, thereby achieving real-time mixing of the fertilizer according to the changes in water quality in the rice field. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the stirring device of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the stirring device of the present invention is shown in FIG. Figure 2 ; Figure 3 Schematic diagram of the cross-sectional structure of the stirring device of the present invention; Figure 4 A schematic structural diagram of the rice field information collection device of the present invention; Figure 5 A schematic side cross-sectional view of the structure of the rice field information collection device of the present invention; Figure 6 A schematic diagram of the rear cross-sectional structure of the rice field information collection device of the present invention; In the figure: 1. Mixing tank body; 2. Mixing motor; 3. Motor bearing frame; 4. Water and fertilizer output pipe; 5. Ball valve; 6. Raw material input pipeline; 7. Control module; 8. Data cable; 9. Electric valve group; 10. Flow meter; 11. Power connector; 12. Drive rod; 13. Mixing fan blade; 14. Rotating base; 15. Collection device body; 16. Fixed support column; 17. Water quality detection head 1; 18. Water quality detection head 2; 19. Solar panel; 20. Water quality analyzer; 21. Battery pack; 22. Remote data transmission module; 23. Connecting column. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances. Example

[0020] See also Figure 1-6, the present invention provides a technical solution: A device for monitoring water and fertilizer in rice fields and mixing pesticide and fertilizer ratios, comprising a mixing tank body 1, a water quality monitoring component, and a data line 8. A raw material input pipeline 6 is fixedly connected to the top of the mixing tank body 1. An electric valve group 9 is provided in the middle of the raw material input pipeline 6. A flow meter 10 is provided at the front end of the electric valve group 9. A control module 7 is provided at the upper end of the electric valve group 9. The rear end of the flow meter 10 is connected to the control module 7 through the electric valve group 9 via the data line 8. The flow meter 10 transmits data on the volume of raw materials passing through the control module 7 via the data line 8. The control module 7 controls the opening and closing of the electric valve group 9. The water quality monitoring assembly includes a collection device body 15, a water quality analyzer 20, a water quality probe head 17, and a water quality probe head 2 18. A fixed support column 16 is provided at the lower end of the collection device body 15. The water quality analyzer 20 is provided at the bottom end inside the fixed support column 16. The data line 8 is connected to the upper end of the water quality analyzer 20. The water quality probe head 17 and the water quality probe head 2 18 are respectively provided at the lower end of the water quality analyzer 20, and the water quality probe head 17 and the water quality probe head 2 18 pass through the collection device body 15. A remote data transmission module 22 is provided on the side of the inner wall of the collection device body 15. The water quality analyzer 20 transmits the analyzed data to the remote data transmission module 22 via a data line 8 provided at the upper end.

[0021] In the present invention, a motor load-bearing frame 3 is installed on the upper end of the stirring tank body 1, a stirring motor 2 is installed on the upper end of the motor load-bearing frame 3, the output shaft of the stirring motor 2 is connected to a transmission rod 12, a stirring fan blade 13 is installed on the side of the transmission rod 12, and a rotating base 14 is installed at the bottom of the stirring tank body 1, and the bottom end of the transmission rod 12 is inserted into the rotating base 14.

[0022] In the present invention, a battery pack 21 is provided at the upper end of the main body 15 of the collection device, a connecting column 23 is provided at the upper end of the main body 15 of the collection device, a solar panel 19 is provided at the upper end of the connecting column 23, and the lower end of the solar panel 19 is connected to the battery pack 21 through the data line 8 passing through the connecting column 23.

[0023] In the present invention, the rotating base 14 is waterproofed, the stirring blades 13 are provided with upper and lower double layers, and the number of the raw material input pipes 6 can be increased according to the increase in the types of raw materials.

[0024] In the present invention, the sides of the stirring motor 2, the electric valve group 9 and the flow meter 10 are all provided with a power connector 11, which is connected to an external power source. In the present invention, a water and fertilizer output pipe 4 is provided at the lower end of the side surface of the mixing tank body 1 , and a ball valve 5 is provided at the front end of the water and fertilizer output pipe 4 .

[0025] In the present invention, a data line 8 is provided at the lower end of the battery pack 21 to connect to the water quality analyzer 20. The battery pack 21 supplies energy to the water quality analyzer 20 through the data line 8. A separation layer is provided between the battery pack 21 and the water quality analyzer 20.

[0026] In the present invention, the first water quality detection head 17 is inserted into the shallow water layer of the rice field, and the second water quality detection head 18 is inserted into the deep water layer of the rice field.

[0027] A method for monitoring water and fertilizer in rice fields and adjusting the ratio of pesticides and fertilizers, comprising the following steps: S1: The water quality analyzer 20 is started. The water quality analyzer 20 uses the water quality detection head 17 and the water quality detection head 2 18 to collect nitrogen and phosphorus content and water quality information at different depths in the rice field. The water quality analyzer 20 analyzes the collected data and transmits the processed data to the remote data transmission module 22; S2: The remote data transmission module 22 converts the processed data into digital signals and transmits them back to the staff; S3: The staff analyzes the collected data and determines the amount of each raw material to be added; S4: The staff inputs the proportions of each component into the control module 7. The control module 7 sets the addition amount of each raw material as a threshold value. The control module 7 controls the electric valve group 9 to open, and the raw materials flow into the mixing tank body 1 along the raw material input pipe 6. The flow meter 10 starts to measure the volume of the raw materials flowing into each pipe and transmits it to the control module 7 through the data line 8; S5: When the inflow volume of a certain raw material input pipeline 6 reaches a set threshold, the control module 7 controls the electric valve group 9 to close the valve of the corresponding pipeline; S6: When all raw materials reach the threshold, the control module 7 controls the electric valve group 9 to close all valves; S7: Start the stirring motor 2 to stir and mix the raw materials; S8: After stirring is completed, the stirring motor 2 is stopped and the ball valve 5 is opened to take out the fertilizer; S9: Clean the interior of the mixing tank body 1, and fill and transport the fertilizer.

[0028] Specific implementation process Device structure and component functions The device mainly consists of four parts: a stirring tank body 1, a collection device body 15, a control module 7 and a remote data transmission module 22. The components work together to achieve precise mixing and intelligent management of pesticides and fertilizers.

[0029] Mixing tank body 1: like Figure 1 The water and fertilizer output pipe 4 and the ball valve 5 are located at the lower end of the side of the mixing tank body 1, and are used to discharge the fertilizer after mixing. The ball valve 5 controls the opening and closing of the discharge port.

[0030] Stirring motor 2 and transmission system: Figure 3 The stirring motor 2 is fixed on the motor bearing frame 3 at the upper end of the tank body, and drives the stirring blade 13 to rotate through the transmission rod 12. The stirring blade 13 adopts a double-layer design to improve the mixing efficiency. The rotating base 14 is waterproof to prevent fertilizer water from entering and corroding the internal structure.

[0031] The raw material input pipeline 6 and the electric valve group 9, the raw material input pipeline 6 runs through the upper end of the tank body, the electric valve group 9 controls the inflow of raw materials, and a flow meter 10 is installed at the front end of the electric valve group 9 to monitor the volume of the input raw materials in real time.

[0032] The water quality detection head 17 and the water quality detection head 2 18 on the main body 15 of the collection device are respectively inserted into the shallow water layer and the deep water layer of the rice field to collect water quality data (such as nitrogen and phosphorus content) at different depths in real time. The electrochemical sensor of the detection head adopts electrochemical sensing for measurement.

[0033] The water quality analyzer 20 is located at the bottom of the collection device, receives and analyzes the data from the detection head, and transmits the results to the remote module; Principle: When the water quality detection head is inserted into the rice field, its built-in electrochemical sensor completes the detection and data collection of elements such as nitrogen and phosphorus through the following steps: Sensor contact and potential establishment After the electrochemical sensor (such as ammonium ion selective electrode, phosphate reduction electrode) is immersed in water, its sensitive membrane contacts the target ions (NH4⁺, PO4³⁻) in the water, forming an electrochemical reaction interface. A potential difference is generated between the reference electrode inside the electrode and the solution to be tested. The difference is linearly related to the logarithm of the ammonium ion activity in the solution.

[0034] Electrochemical reaction and signal conversion: Ammonium ion detection: Ammonium ions enter the electrode through the ion carrier in the sensitive membrane and exchange with ions in the internal solution, resulting in charge transfer and generating a potential signal proportional to the concentration.

[0035] Phosphorus detection: An electrochemical sensor using phosphomolybdenum blue spectrophotometry reduces phosphate to phosphine by applying a reduction potential. The current intensity generated by the oxidation process is positively correlated with the phosphate concentration.

[0036] Original signal transmission: The weak current / voltage signal output by the sensor is transmitted to the water quality analyzer 20 through the internal shielded cable; Power supply system: Figure 5 The solar panel 19 is connected to the battery pack 21 in the main body 15 of the collection device through the connecting column 23 to provide power for the water quality analyzer 20 and the remote data transmission module 22, ensuring that the device can operate stably outdoors for a long time.

[0037] Control module 7: Figure 2Accept the volume that should flow into each raw material input pipeline 6 set by external personnel, and set this value as the threshold, receive the raw material input volume data monitored by the flow meter 10, compare the monitored raw material input volume data with the preset threshold, control the switch of the electric valve group 9, and achieve precise measurement.

[0038] The remote data transmission module 22 transmits the water quality analysis results to the staff end, and at the same time receives the pesticide and fertilizer ratio instructions input by the staff to achieve remote control and data feedback.

[0039] Complete production process and component coordination logic S1: Installation of water quality probes: Insert water quality probe 17 (shallow water layer, depth 5-10 cm) and water quality probe 2 18 (deep water layer, depth 20-30 cm) into the designated positions of the rice field, ensuring that the sensor sensitive membrane is in full contact with the water.

[0040] The power supply system is started: the solar panel 19 charges the battery pack 21 in the collection device body 15 through the connecting column 23. The battery pack 21 supplies power to the water quality analyzer 20, the remote data transmission module 22, the water quality detection head 1 17 and the water quality detection head 2 18, ensuring continuous operation for more than 7 days.

[0041] Initialization of control module 7: The operator sets the initial parameters (rice growth stage, basic fertilizer and pesticide ratio) through the remote terminal, and the control module 7 loads the preset threshold database; Electrochemical sensor response: Ammonium ion detection: The ammonium ion selective electrode sensitive membrane in the detection head undergoes ion exchange with NH4⁺ in water, generating a linear potential difference with the logarithm of the concentration.

[0042] Phosphorus detection: A -0.5V reduction potential is applied to the phosphate reduction electrode to reduce PO4³⁻ to PH3. The current intensity (nA level) generated by the oxidation process is positively correlated with the phosphate concentration after logarithmic transformation.

[0043] Original signal transmission: The μV-level potential difference or nA-level current output by the sensor is transmitted to the water quality analyzer 20 through a shielded cable.

[0044] S2: Remote data transmission: The processed analysis data is converted into digital signal packets through the remote data transmission module 22.

[0045] The data is transmitted to the cloud server using the AES encryption protocol, and a visual report is generated for terminal access.

[0046] S3: Intelligent formula generation: The staff obtains multi-dimensional data from the rice field through the remote data transmission module 22, combines the crop growth model with the soil test value, and calculates the precise nutrient ratio plan. The system automatically generates a raw material addition threshold table (including a safety redundancy factor).

[0047] S4: The recipe parameters are input into the control module 7, and the control module 7 sets the addition amount of each raw material as a threshold value. The control module 7 triggers the initialization of the electric valve group 9, and the raw materials flow into the mixing tank body 1 along the raw material input pipe 6. The flow meter 10 starts to measure the volume of the raw materials flowing into each raw material input pipe 6 and transmits it to the control module 7 through the data line 8.

[0048] S5: Precise metering and valve control: When the raw material input volume of a certain raw material input pipeline 6 reaches the preset threshold, the control module 7 immediately closes the corresponding electric valve to ensure the accurate proportion of each component. After all raw materials are input, the control module 7 closes all valves and prepares for mixing. The PID algorithm is used to control the flow of each channel. When the cumulative amount of a single channel reaches the threshold ±0.5%, the pulse signal is triggered to close the corresponding solenoid valve.

[0049] S6: End of raw material input: When the volume of all raw materials transmitted back by the flow meter reaches the threshold and is transmitted back to the control module 7, the control module 7 controls the trigger pulse signal to close all valves of the electric valve group 9, and transmits the electrical signal that all raw materials in the valve have reached the threshold through the power connector on the side.

[0050] S7: Stirring and mixing: After the staff knows that all the raw material inputs have reached the threshold, they start the stirring motor by inputting an electrical signal to the power connector on the side of the stirring motor 2. The stirring motor 8 runs according to the preset speed curve: initial 300 rpm → working 600 rpm → ending 400 rpm (which can be adjusted according to the different raw material ratios). The stirring motor 8 starts its transmission shaft, and the transmission shaft drives the transmission rod 12 to rotate, and the transmission rod 12 drives the double-layer stirring fan blades 13 to rotate.

[0051] The double-layer stirring blades 13 can fully mix the raw materials in the upper and lower layers at the same time, and the double-layer stirring structure ensures the uniform mixing of the raw materials of the fertilizer.

[0052] S8: After the discharge and cleaning of the mixing is completed: After the mixing of the fertilizer reaches the set time, turn off the stirring motor 2. After the stirring motor 2 stops, open the ball valve 5 after a delay of 30 seconds. During the output process, the packaging line preheating program is started synchronously to open the ball valve 5, discharge the mixed fertilizer, clean the inside of the mixing tank, and prepare for the mixing operation of the next batch of fertilizer.

[0053] S9: Filling and transporting pesticides and fertilizers: Fill the discharged pesticides and fertilizers and transport them to the rice fields for application.

[0054] Through the above structure and process, the device can monitor the water quality of rice fields in real time, dynamically adjust the ratio of medicine and fertilizer, achieve precise fertilization, improve rice yield and quality, and reduce resource waste and environmental pollution.

[0055] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

[0056] In this application, the structures and connection relationships that are not described in detail are all prior art, and their structures and principles are well-known technologies and will not be described in detail here.

Claims

1. A device for monitoring water and fertilizer in rice fields and mixing fertilizer and pesticide ratio, comprising a stirring tank body (1), a water quality monitoring component, and a data line (8), characterized in that: The top of the mixing tank body (1) is fixedly connected to a raw material input pipeline (6), an electric valve group (9) is arranged in the middle of the raw material input pipeline (6), a flow meter (10) is arranged at the front end of the electric valve group (9), a control module (7) is arranged at the upper end of the electric valve group (9), and the rear end of the flow meter (10) is connected to the control module (7) through the electric valve group (9) via a data line (8). The flow meter (10) transmits data on the volume of raw materials passing through to the control module (7) via the data line (8), and the control module (7) controls the switch of the electric valve group (9); The water quality monitoring assembly includes a collection device body (15), a water quality analyzer (20), a water quality detection head 1 (17), a water quality detection head 2 (18), a fixed support column (16) is provided at the lower end of the collection device body 15, the water quality analyzer (20) is provided at the bottom end inside the fixed support column (16), the data line (8) is connected to the upper end of the water quality analyzer (20), the water quality detection head 1 (17) and the water quality detection head 2 (18) are respectively provided at the lower end of the water quality analyzer (20), and the water quality detection head 1 (17) and the water quality detection head 2 (18) pass through the collection device body (15), and a remote data transmission module (22) is provided on the side of the inner wall of the collection device body (15); The water quality analyzer (20) transmits analyzed data to a remote data transmission module (22) via a data line (8) provided at the upper end.

2. The device for monitoring water and fertilizer in paddy fields and mixing fertilizer and pesticide ratio according to claim 1 is characterized in that: A motor bearing frame (3) is mounted on the upper end of the stirring tank body (1), a stirring motor (2) is mounted on the upper end of the motor bearing frame (3), an output shaft of the stirring motor (2) is connected to a transmission rod (12), a stirring fan blade (13) is mounted on the side of the transmission rod (12), a rotating base 14 is mounted on the bottom of the stirring tank body (1), and the bottom end of the transmission rod (12) is inserted into the rotating base (14).

3. The device for monitoring water and fertilizer in paddy fields and mixing fertilizer and pesticide ratio according to claim 1 is characterized in that: A battery pack (21) is provided at the upper end of the collection device body (15), a connecting column (23) is provided at the upper end of the collection device body (15), a solar panel (19) is provided at the upper end of the connecting column (23), and a lower end of the solar panel (19) is connected to the battery pack (21) via a data line (8) passing through the connecting column (23).

4. The device for monitoring water and fertilizer in paddy fields and mixing fertilizer and pesticide ratio according to claim 2, characterized in that: The rotating base (14) is waterproofed, the stirring blades (13) are provided with upper and lower double layers, and the number of the raw material input pipes (6) can be increased according to the increase in the types of raw materials.

5. The device for monitoring water and fertilizer in paddy fields and mixing fertilizer and pesticide ratio according to claim 2, characterized in that: Power connectors (11) are provided on the sides of the stirring motor (2), the electric valve group (9) and the flow meter (10), and the power connectors (11) are connected to an external power source.

6. The device for monitoring water and fertilizer in paddy fields and mixing fertilizer and pesticide ratio according to claim 1 is characterized in that: A water and fertilizer output pipe (4) is provided at the lower end of the side of the mixing tank body (1), and a ball valve (5) is provided at the front end of the water and fertilizer output pipe (4).

7. The device for monitoring water and fertilizer in paddy fields and mixing fertilizer and pesticide ratio according to claim 3 is characterized in that: A data line (8) is provided at the lower end of the battery pack (21) for connection to the water quality analyzer (20). The battery pack (21) supplies energy to the water quality analyzer (20) via the data line (8). A separation layer is provided between the battery pack (21) and the water quality analyzer (20).

8. The device for monitoring water and fertilizer in paddy fields and mixing fertilizer and pesticide ratio according to claim 1 is characterized in that: The water quality detection head 1 (17) is inserted into the shallow water layer of the rice field, and the water quality detection head 2 (18) is inserted into the deep water layer of the rice field.

9. A method for monitoring water and fertilizer in paddy fields and adjusting the ratio of pesticides and fertilizers according to any one of claims 1 to 8, characterized in that: Here are the steps: S1: The water quality analyzer (20) is started, and the water quality analyzer (20) uses the water quality detection head 1 (17) and the water quality detection head 2 (18) to collect nitrogen and phosphorus content and water quality information at various depths in the rice field. The water quality analyzer (20) analyzes the collected data, and the processed data is transmitted to the remote data transmission module (22); S2: The remote data transmission module (22) converts the processed data into digital signals and transmits them back to the staff; S3: The staff analyzes the collected data and determines the amount of each raw material to be added; S4: The staff inputs the proportions of each component into the control module (7), the control module (7) sets the addition amount of each raw material as a threshold value, the control module (7) controls the electric valve group (9) to open, and the raw materials flow into the mixing tank body (1) along the raw material input pipeline (6), and the flow meter (10) starts to measure the volume of the raw materials flowing into each pipeline and transmits it to the control module (7) through the data line (8); S5: When the inflow volume of a certain raw material input pipeline (6) reaches a set threshold, the control module (7) controls the electric valve group (9) to close the valve of the corresponding pipeline; S6: When all raw materials reach the threshold, the control module (7) controls the electric valve group (9) to close all valves; S7: Start the stirring motor (2) to stir and mix the raw materials; S8: After stirring is completed, the stirring motor (2) is stopped and the ball valve (5) is opened to take out the fertilizer; S9: Clean the interior of the mixing tank body (1), and fill and transport the fertilizer.

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