CN114788449A - Device and method for adjusting and controlling fertilizer suction amount of water and fertilizer all-in-one machine - Google Patents
Device and method for adjusting and controlling fertilizer suction amount of water and fertilizer all-in-one machine Download PDFInfo
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- CN114788449A CN114788449A CN202210510482.XA CN202210510482A CN114788449A CN 114788449 A CN114788449 A CN 114788449A CN 202210510482 A CN202210510482 A CN 202210510482A CN 114788449 A CN114788449 A CN 114788449A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/007—Metering or regulating systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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Abstract
The invention discloses a fertilizer suction quantity adjusting and controlling device and a fertilizer suction quantity adjusting and controlling method for a water and fertilizer all-in-one machine, and the fertilizer suction quantity adjusting and controlling device comprises a main irrigation pipe, a Venturi tube, a fertilizer pump and a regulating valve, wherein a main flowmeter and a fertilizer liquid parameter monitor are arranged at the water outlet end of the main irrigation pipe, the inlet end of the Venturi tube is connected with the water outlet end of the main irrigation pipe, the fertilizer pump and the regulating valve are arranged between the outlet end of the Venturi tube and the water inlet end of the main irrigation pipe, a fertilizer suction opening of the Venturi tube is connected with a booster pump, the input end of the booster pump is connected with a fertilizer flowmeter, the fertilizer flowmeter is connected with a fertilizer container through a pipeline, and the fertilizer pump, the regulating valve, the main flowmeter, the fertilizer liquid parameter monitor, the booster pump and the fertilizer flowmeter are connected with a controller. The invention creatively utilizes the miniature direct-current booster pump to adjust the pressure of the fertilizer suction port end, the overall cost of the control device is low, and the control method is mature and reliable; the response time of the control process is relatively fast, the fertilizing amount can be quickly adjusted to meet the requirements, and the requirements of different irrigation objects on the irrigation time are met.
Description
Technical Field
The invention relates to the technical field of water and fertilizer integrated machines, in particular to a device and a method for adjusting and controlling the fertilizer absorption amount of a water and fertilizer integrated machine.
Background
The nuclear core part in the liquid manure all-in-one is fertilizer injection unit, and fertilizer injection unit mainly includes venturi, fertilization pump and solenoid valve or motorised valve and supporting pipeline, and the venturi import and export connect irrigation pipe section (apart from about 1 meter) respectively through the fertilization pump, and venturi inhales fertile mouth (laryngeal aperture) and is connected to fertilizer bucket through solenoid valve or motorised valve and pumps fertilizer and mix in the irrigation pipe. Its principle is that the fertilization pump provides the pressure differential for venturi, and according to venturi principle, venturi passes through certain water yield, and the venturi throat will produce the negative pressure, and when opening solenoid valve or motorised valve, the liquid of fertilizer bucket will inhale fertile mouthful through venturi and is inhaled venturi to get into the irrigation pipe from the venturi export.
In the actual irrigation process, the requirements of different irrigation objects on the pH value (PH), the conductivity (EC) and the like of an irrigation solution and the irrigation completion time are met in addition to the requirements of the outline of the water and fertilizer integrated machine, and the requirements of different irrigation objects on the EC and the pH value are different. EC. The control of the pH value depends on the control of the fertilizer suction amount, and most of the control modes are realized by adjusting and controlling switching equipment such as an electromagnetic valve or an electric valve and the like connected between a venturi pipe fertilizer suction port and a fertilizer barrel. The irrigation completion time refers to the time for completing irrigation once for irrigation objects, the completion time for different irrigation objects is different, outdoor fruits and vegetables can be tens of minutes or even up to hours, and the time for greenhouse fruits and vegetables can be as short as 10 seconds. The irrigation process of the water and fertilizer integrated machine is frequently to irrigate different fruits and vegetables (different fruits and vegetables have different requirements on concentration of fertilizer liquid, namely EC, PH values and the like need to be changed continuously and rapidly in the irrigation process), so that the better water and fertilizer integrated machine has certain requirements on the value control and control response time of EC and PH.
Several structures of a fertilizer suction device in a water and fertilizer all-in-one machine on the current market are as follows:
1. a check valve is arranged at the suction end of the venturi tube, and the fertilizer suction amount is adjusted by manually rotating the opening of the check valve;
2. the venturi tube fertilizer suction port is connected with and provided with an electromagnetic valve, and the electromagnetic valve is only in an on-off state, so that the fertilizer suction amount can be adjusted only by controlling the on-off time proportion of the electromagnetic valve through an algorithm;
3. an electric valve is arranged at the suction end of the Venturi tube, namely the fertilizer suction amount is adjusted by electrically controlling the opening degree of the ball valve;
4. an alternating current water pump or a booster pump is arranged at the inlet end and the outlet end of the Venturi tube, and the fertilizer suction amount is adjusted by adjusting the lift of the water pump.
For the first structure, a control valve is adopted, automatic control cannot be realized, and only manual adjustment is realized.
For the second structure, the electromagnetic valve is adopted for control, and the electromagnetic valve can only be in a full-open or full-closed control state, so that the electromagnetic valve has the limitation of the maximum working frequency and cannot realize the continuous adjustment function. In addition, the higher the working frequency of the electromagnetic valve is, the higher the cost is, the price of the electromagnetic valve with the same diameter in the market can be different by more than 20 times, and the price of a single electromagnetic valve suitable for the water and fertilizer all-in-one machine in the current market is more than 1000 yuan, so that the cost is high.
For the third structure, the control of the fertilizer suction amount can be better solved by adopting the control of an electric valve, but the electric valve has the problem of long full-stroke adjusting time (generally, the adjusting reaction is slow within 10-60 seconds), is not suitable for irrigation such as water culture planting and the like with short irrigation time each time, and is difficult to meet the requirements of quickly changing EC (electric potential) and PH (potential of hydrogen) values and the like in the irrigation process; and the adjusting valve with short full-stroke adjusting time is very high in price, and the price of a single adjusting valve suitable for the water and fertilizer all-in-one machine in the current market is more than 3500 Yuan.
For the fourth structure, an alternating current water pump or a booster pump is arranged at the inlet end and the outlet end of the venturi tube for controlling, and a special control circuit or a frequency converter is needed for controlling the rotating speed, for example, the patent publication number is CN108811658A, the patent name is a variable fertilization system and a control method thereof, and the variable fertilization system and the control method thereof are provided; the monitoring instrument 5, the first electromagnetic valve 6, the booster pump 7 and the first pressure sensor 8 are sequentially arranged on the fertilizer suction liquid inlet pipe along the water flow direction, the booster pump 7 can run in a variable frequency mode and is used for adjusting the pressure in a fertilizer suction pipeline, and further the pressure difference between the inlet and the outlet of the Venturi fertilizer applicator 9 is changed so as to change the fertilizer suction flow; these devices are relatively complex in structure and relatively expensive to control.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a device and a method for adjusting and controlling the fertilizer suction quantity of a water and fertilizer integrated machine, wherein a booster pump is creatively arranged at a fertilizer suction port of a Venturi tube, and the booster pump is used for adjusting the fertilizer suction pressure; the fertilizing amount can be quickly adjusted to meet the requirement, the control lag time is short, and the irrigation requirement on shorter irrigation completion time is well met.
In order to realize the purpose, the invention adopts the following technical scheme:
fertile volume regulation and control device is inhaled to liquid manure all-in-one, including main irrigation pipe, venturi, fertilization pump and governing valve, the delivery port end of main irrigation pipe is equipped with main flowmeter and fertile liquid parameter monitor, venturi's entrance point with the delivery port end of main irrigation pipe is connected, venturi's exit end with set up between the main irrigation pipe inlet end fertilization pump and governing valve, venturi inhales fertile mouthful and connects the booster pump, the booster pump input is connected with the fertilizer flowmeter, the fertilizer flowmeter links to each other with the fertilizer container through the pipeline, fertilization pump, governing valve, main flowmeter, fertile liquid parameter monitor, booster pump and fertilizer flowmeter link to each other with the controller.
Further, venturi includes more than two sets, more than two sets the parallelly connected setting of venturi, every set venturi all is connected with booster pump and fertilizer flowmeter alone.
Furthermore, the regulating valve is a manual regulating valve or an automatic regulating valve.
Furthermore, the booster pump is a micro direct current booster pump, the lift of the booster pump is larger than 5 meters, the flow rate of the booster pump is larger than 800L/H, and the power of the booster pump is 50-100W.
According to the control method of the fertilizer absorption quantity adjusting and controlling device of the water and fertilizer integrated machine, the method is characterized by comprising the following steps: the method comprises the following steps:
s1, starting the fertilizing pump when the booster pump is in a power-off state, rotating the regulating valve to enable the fertilizer suction force of the Venturi tube to be close to a critical fertilizer suction state, and enabling the flow measured by the fertilizer flowmeter to be close to zero at the moment;
s2, the booster pump is powered on, the controller reads a real-time value of a fertilizer liquid parameter measured by the fertilizer liquid parameter monitor and a real-time flow value measured by the fertilizer flowmeter, a deviation between a target value of the fertilizer liquid parameter and the real-time value of the fertilizer liquid parameter is calculated, the lift of the booster pump is adjusted according to the deviation value, so that the pressure difference between the fertilizer container and the venturi pipe fertilizer suction port is adjusted, the fertilizer liquid proportion in the main irrigation pipe is changed by adjusting the fertilizer suction amount, and the real-time value of the fertilizer liquid parameter approaches the target value.
Furthermore, when the regulating valve is a manual valve, the flow measured by the fertilizer measuring flowmeter is regulated to be close to zero through manual rotation.
Further, when the regulating valve is an automatic regulating valve, the regulating valve is controlled by the controller to automatically rotate and regulate until the flow measured by the fertilizer flowmeter is close to zero.
Further, in step S2, when the lift of the booster pump is adjusted, the lift is changed by adjusting the rotation speed of the booster pump.
Further, in step S2, the target value of the fertilizer liquid parameter is preset in the control program, and when the real-time value of the fertilizer liquid parameter approaches the target value by adjusting the fertilizer suction amount, the controller reads the real-time flow value measured by the fertilizer flowmeter 6, monitors whether the flow is within the range of the range, and calculates and monitors whether the flow variation matches the lift variation trend of the booster pump 5, if not, an alarm signal is sent.
The invention has the following beneficial effects:
1. according to the invention, the fertilizer suction port of the Venturi tube is creatively provided with the booster pump, the pressure of fertilizer suction is regulated by utilizing the booster pump, the booster pump is arranged at the fertilizer suction port (throat) and is obviously different from the conventional one arranged at the inlet or outlet of the Venturi tube, the overall cost of the control device is low, and the control method is mature, reliable and easy to implement; the response time of the control process is relatively fast, the fertilizing amount can be quickly adjusted to meet the requirements, and the requirements of different irrigation objects on the irrigation completion time are met.
2. When the invention is used for regulation and control, firstly the regulating valve enables the fertilizer suction capacity of the Venturi tube to be close to a critical fertilizer suction state (the fertilizer suction amount is close to zero), then the booster pump is started by electrifying, thus the fertilizer suction amount can be changed from 0 to a set value according to a calculation formula by regulating the lift of the miniature direct current booster pump, the control is stable and reliable, and the fertilizer suction amount regulating effect is good.
3. The regulating valve can adopt a manual regulating valve or an automatic regulating valve, and the manual regulating valve has low cost; the automatic regulating valve is adopted to regulate, so that the operation is convenient, the automatic control degree is high, and the remote control is facilitated.
Drawings
FIG. 1 is a schematic diagram of a system structure of a fertilizer suction amount adjusting and controlling device of the water and fertilizer integrated machine.
Figure 2 is a graph of booster pump performance.
FIG. 3 is a graph of booster pump control voltage versus rotational speed.
Description of the reference numerals:
1. a main irrigation pipe; 11. a primary flow meter; 12. a fertilizer liquid parameter monitor; 2. a venturi tube; 3. a fertilizing pump; 4. adjusting a valve; 5. a booster pump; 6. a fertilizer flow meter; 7. a fertilizer container.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
referring to fig. 1-3, the fertilizer absorption quantity adjusting and controlling device of the water and fertilizer integrated machine comprises a main irrigation pipe 1, a venturi tube 2, a fertilizer application pump 3 and a regulating valve 4, wherein a main flow meter 11 and a fertilizer liquid parameter monitor 12 are arranged at a water outlet end of the main irrigation pipe 1, an inlet end of the venturi tube 2 is connected with the water outlet end of the main irrigation pipe 1, the fertilizer application pump 3 and the regulating valve 4 are arranged between an outlet end of the venturi tube 2 and a water inlet end of the main irrigation pipe 1, and the regulating valve 4 is a manual regulating valve or an automatic regulating valve; venturi 2 inhale fertile mouth and connect booster pump 5, the 5 inputs of booster pump are connected with fertilizer flowmeter 6, fertilizer flowmeter 6 links to each other with fertilizer container 7 through the pipeline, fertilization pump 3, governing valve 4, main flowmeter 11, fertile liquid parameter monitor 12, booster pump 5 and fertilizer flowmeter 6 link to each other with the controller.
Venturi 2 includes more than two sets, more than two sets venturi 2 connects in parallel sets, every set venturi 2 all is connected with booster pump 5 and fertilizer flowmeter 6 alone. In this embodiment, four sets are provided.
The booster pump 5 is a miniature direct-current booster pump, the lift of the booster pump is larger than 5 meters, the flow rate of the booster pump is larger than 800L/H, and the power of the booster pump is 50-100W.
According to the control method of the fertilizer absorption quantity adjusting and controlling device of the water and fertilizer integrated machine, the method comprises the following steps:
s1, the booster pump 5 is in a power-off state, the fertilizing pump 3 is started, the regulating valve 4 is rotated to enable the fertilizer suction capacity of the Venturi tube 2 to be close to a critical fertilizer suction state, and the flow measured by the fertilizer flowmeter 6 is close to zero at the moment;
s2, the booster pump 5 is powered on, the controller reads a real-time value of the fertilizer liquid parameter measured by the fertilizer liquid parameter monitor 12 and a real-time flow value measured by the fertilizer flowmeter 6, calculates a deviation between a target value of the fertilizer liquid parameter and the real-time value of the fertilizer liquid parameter, adjusts the lift of the booster pump 5 according to the deviation value, adjusts the pressure difference between the fertilizer suction ports of the fertilizer container 7 and the venturi tube 2, changes the fertilizer liquid ratio in the main irrigation pipe 1 by adjusting the fertilizer suction amount, and enables the real-time value of the fertilizer liquid parameter to approach the target value.
The appropriate type specifications of the fertilization pump 3 and the regulating valve 4 are selected according to the flow range of the main irrigation pipe 1, and in order to simplify control, the fertilization pump 3 only adopts a common pump and does not need to be controlled by a frequency converter.
When the regulating valve 4 is a manual valve, the flow measured by the fertilizer measuring flowmeter 6 is regulated to be close to zero through manual rotation. When the regulating valve 4 is an automatic regulating valve, the regulating valve 4 is controlled by the controller to automatically rotate and regulate until the flow measured by the fertilizer flowmeter 6 is close to zero.
In the step S2, the target value of the fertilizer liquid parameter is preset in the control program, the change of the fertilizer liquid parameter depends on the change of the fertilizer absorption amount, when the real-time value of the fertilizer liquid parameter approaches the target value by adjusting the fertilizer absorption amount, the controller reads the real-time flow value measured by the fertilizer flowmeter 6, monitors whether the flow is within the range (alarm is given when the flow exceeds the range), and calculates and monitors whether the flow change conforms to the lift change trend of the booster pump 5, if not, an alarm signal is given. If the real-time value is smaller than the set value, the fertilizer absorption amount is increased, the EC value is increased, and vice versa. The same applies to pH adjustment.
In the step S2, when the lift of the booster pump 5 is adjusted, the lift is changed by adjusting the rotation speed of the booster pump 5. The lift of the booster pump 5 is related to the rotating speed thereof and is in a square relation, and the lift can be adjusted by adjusting the rotating speed thereof, namely, the pressure difference between the fertilizer container 7 and the fertilizer suction opening (throat) of the Venturi tube 2 is adjusted, so that the fertilizer suction amount reaches a set value, and the control process is a closed-loop system control process. Fig. 2 is a performance curve diagram of the booster pump, fig. 3 is a relation diagram of the control voltage and the rotating speed of the booster pump, different control voltages can be seen from the diagram, corresponding head curves and flow curves are different, and the head and the flow of the booster pump can be adjusted through voltage control.
According to the characteristic that the maximum fertilizer suction amount of each pipeline of most of the existing water and fertilizer integrated machines is about 600-800L/H, a miniature direct-current booster pump with the lift of 10 m and the flow rate of about 1000L/H is adopted, and the ratio of the measuring ranges of a main flowmeter 11 and a fertilizer flowmeter 6 is about 10-20: 1 (selected according to the proportion range), and the water and fertilizer can be adjusted to quickly meet the adjustment requirement.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. Fertile volume regulation and control device is inhaled to liquid manure all-in-one, its characterized in that: comprises a main irrigation pipe (1), a Venturi tube (2), a fertilization pump (3) and an adjusting valve (4), the water outlet end of the main irrigation pipe (1) is provided with a main flowmeter (11) and a fertilizer liquid parameter monitor (12), the inlet end of the Venturi tube (2) is connected with the water outlet end of the main irrigation pipe (1), the fertilizing pump (3) and the regulating valve (4) are arranged between the outlet end of the Venturi tube (2) and the water inlet end of the main irrigation pipe (1), the fertilizer suction port of the Venturi tube (2) is connected with a booster pump (5), the input end of the booster pump (5) is connected with a fertilizer flowmeter (6), the fertilizer flow meter (6) is connected with a fertilizer container (7) through a pipeline, the fertilizer pump (3), the regulating valve (4), the main flow meter (11), the fertilizer liquid parameter monitor (12), the booster pump (5) and the fertilizer flow meter (6) are connected with the controller.
2. The fertilizer suction amount adjusting and controlling device of the water and fertilizer all-in-one machine as claimed in claim 1, characterized in that: venturi tube (2) include more than two sets, more than two sets Venturi tube (2) parallelly connected sets, every set Venturi tube (2) all are connected with booster pump (5) and fertilizer flowmeter (6) alone.
3. The fertilizer absorption amount adjusting and controlling device of the water and fertilizer integrated machine as claimed in claim 1, characterized in that: the regulating valve (4) is a manual regulating valve or an automatic regulating valve.
4. The fertilizer suction amount adjusting and controlling device of the water and fertilizer all-in-one machine as claimed in claim 1, characterized in that: the booster pump (5) is a miniature direct-current booster pump, the lift of the booster pump is larger than 5 meters, the flow rate of the booster pump is larger than 800L/H, and the power of the booster pump is 50-100W.
5. The fertilizer suction amount adjusting and controlling method of the water and fertilizer all-in-one machine as claimed in claim 1, characterized in that: the method comprises the following steps:
s1, when the booster pump (5) is in a power-off state, the fertilizer application pump (3) is started, the regulating valve (4) is rotated to enable the fertilizer suction capacity of the Venturi tube (2) to be close to a critical fertilizer suction state, and the flow measured by the fertilizer flow meter (6) is close to zero at the moment;
s2, the booster pump (5) is powered on, the controller reads a real-time value of a fertilizer liquid parameter measured by the fertilizer liquid parameter monitor (12) and a real-time flow value measured by the fertilizer flow meter (6), the deviation between a target value of the fertilizer liquid parameter and the real-time value of the fertilizer liquid parameter is calculated, the lift of the booster pump (5) is adjusted according to the deviation value, so that the pressure difference between the fertilizer container (7) and a fertilizer suction port of the Venturi tube (2) is adjusted, the fertilizer liquid proportion in the main irrigation tube (1) is changed by adjusting the fertilizer suction amount, and the real-time value of the fertilizer liquid parameter approaches the target value.
6. The fertilizer suction amount adjusting and controlling method of the water and fertilizer all-in-one machine as claimed in claim 5, characterized in that: when the regulating valve (4) is a manual valve, the flow measured by the fertilizer measuring flowmeter (6) is regulated to be close to zero through manual rotation.
7. The method for adjusting and controlling the fertilizer absorption amount of the water and fertilizer integrated machine according to claim 5, characterized in that: when the regulating valve (4) is an automatic regulating valve, the regulating valve (4) is controlled by the controller to automatically rotate and regulate until the flow measured by the fertilizer flowmeter (6) is close to zero.
8. The method for adjusting and controlling the fertilizer absorption amount of the water and fertilizer integrated machine according to claim 5, characterized in that: in the step S2, when the lift of the booster pump (5) is adjusted, the lift is changed by adjusting the rotation speed of the booster pump (5).
9. The fertilizer suction amount adjusting and controlling method of the water and fertilizer all-in-one machine as claimed in claim 5, characterized in that:
in the step S2, the target value of the fertilizer liquid parameter is preset in the control program, and when the real-time value of the fertilizer liquid parameter approaches the target value by adjusting the fertilizer suction amount, the controller reads the real-time flow value measured by the fertilizer flowmeter (6), monitors whether the flow is in the range, and calculates and monitors whether the flow change conforms to the lift change trend of the booster pump (5), if not, an alarm signal is sent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210510482.XA CN114788449B (en) | 2022-05-11 | 2022-05-11 | Fertilizer suction amount adjusting and controlling device and method for water and fertilizer integrated machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210510482.XA CN114788449B (en) | 2022-05-11 | 2022-05-11 | Fertilizer suction amount adjusting and controlling device and method for water and fertilizer integrated machine |
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| CN114788449A true CN114788449A (en) | 2022-07-26 |
| CN114788449B CN114788449B (en) | 2023-07-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117616962A (en) * | 2024-01-15 | 2024-03-01 | 中国农业科学院农业环境与可持续发展研究所 | Water and fertilizer synchronous control system and method for reel sprinkling irrigation |
| CN117899728A (en) * | 2024-03-18 | 2024-04-19 | 深圳耐菲农业生物科技有限公司 | Organic water-soluble fertilizer proportioning process monitoring system |
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| CN108934390A (en) * | 2018-09-14 | 2018-12-07 | 农业部南京农业机械化研究所 | Automatic fine fertilizer applicator test platform and method |
| CN110411524A (en) * | 2019-07-31 | 2019-11-05 | 农业农村部南京农业机械化研究所 | PWM mode fertilzer sucking pipe road flow quantity detecting system and control method |
| CN112889448A (en) * | 2021-04-02 | 2021-06-04 | 西北农林科技大学 | Water and fertilizer machine actively regulated and controlled based on pipe network terminal information and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20170020062A1 (en) * | 2015-07-23 | 2017-01-26 | Zachary Lovato | Efficient injection and mixing of chemicals into a fluid delivery system |
| CN108934390A (en) * | 2018-09-14 | 2018-12-07 | 农业部南京农业机械化研究所 | Automatic fine fertilizer applicator test platform and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117616962A (en) * | 2024-01-15 | 2024-03-01 | 中国农业科学院农业环境与可持续发展研究所 | Water and fertilizer synchronous control system and method for reel sprinkling irrigation |
| CN117616962B (en) * | 2024-01-15 | 2024-05-24 | 中国农业科学院农业环境与可持续发展研究所 | Water and fertilizer synchronous control system and method for reel sprinkling irrigation |
| CN117899728A (en) * | 2024-03-18 | 2024-04-19 | 深圳耐菲农业生物科技有限公司 | Organic water-soluble fertilizer proportioning process monitoring system |
| CN117899728B (en) * | 2024-03-18 | 2024-06-11 | 深圳耐菲农业生物科技有限公司 | Organic water-soluble fertilizer proportioning process monitoring system |
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