Nanobubble irrigation regulation and control method, controller and irrigation system

Abstract

The invention relates to the technical field of agricultural facilities, and discloses a nanobubble irrigation regulation and control method, a controller and an irrigation system.The rhizosphere detection result of a soil matrix is obtained, and based on the rhizosphere detection result, a nanobubble pump is controlled to adjust the content of oxygen nanobubbles, hydrogen nanobubbles and / or ozone nanobubbles in irrigation water; according to the method, on one hand, the content of oxygen nanobubbles in the irrigation water can be regulated and controlled according to the actual condition of the soil matrix so as to improve the breathing environment of the crop root system, and on the other hand, the irrigation device is controlled to use the regulated irrigation water to irrigate crops; the content of ozone nano bubbles in the irrigation water is regulated and controlled so as to kill harmful microorganisms in the soil and the irrigation water; and on the other hand, the content of the oxygen nano bubbles or the hydrogen nano bubbles in the irrigation water can be regulated and controlled according to the actual condition of the soil matrix, so that the oxidation-reduction potential value of the irrigation water is regulated and controlled, and the oxidation-reduction state of the soil is optimized.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of agricultural facilities, and in particular to a nanobubble irrigation control method, controller, and irrigation system. Background Art

[0002] In agricultural cultivation, crop growth is affected by oxygen supply and pest and disease control. For example, the dissolved oxygen concentration in irrigation water directly affects the root respiration of crops, and the presence of harmful microorganisms in irrigation water increases the risk of crop root infection.

[0003] At present, oxygen is injected into irrigation water to increase the dissolved oxygen concentration in the water to improve the respiration of crops; ozone is injected into irrigation water to use its strong oxidizing properties to kill harmful microorganisms in the water.

[0004] During the development of this application, the inventors discovered at least the following problems with the prior art: Existing oxygen or ozone injection methods, commonly used in hydroponic systems, typically set fixed concentrations of injected oxygen or ozone, ignoring soil factors and making it difficult to meet the dynamic regulation requirements of soil cultivation systems for irrigation water oxygen content or dissolved ozone concentrations. Furthermore, crop growth is also affected by soil conditions, and this hydroponic solution fails to improve the soil's redox state. Furthermore, existing water and oxygen dissolution methods, mostly through traditional air-stone aeration, result in low dissolved oxygen or ozone concentrations and short lifetimes, making it ineffective for oxygen replenishment or disinfection.

[0005] Among them, the hydroponic system is an agricultural system that uses nutrient solution instead of soil as the main medium and nutrient source for plant growth. Summary of the Invention

[0006] The embodiments of the present application provide a nanobubble irrigation control method, controller, and irrigation system to control the content of oxygen nanobubbles, hydrogen nanobubbles, or ozone nanobubbles in irrigation water according to the actual conditions of the soil matrix, thereby improving the respiratory environment of crop roots, eliminating harmful microorganisms, and / or optimizing the redox state of the soil, thereby promoting crop growth.

[0007] The embodiments of this application provide the following technical solutions: In a first aspect, an embodiment of the present application provides a nanobubble irrigation control method, characterized by comprising: Obtaining rhizosphere test results of a soil matrix in which a number of crops are planted; Based on the rhizosphere detection result, controlling the nano air pump to adjust the content of oxygen nano bubbles, hydrogen nano bubbles and / or ozone nano bubbles in the irrigation water to generate adjusted irrigation water; The irrigation device is controlled to irrigate the crops with regulated irrigation water.

[0008] In some embodiments, the nanobubble irrigation control method is applied to a controller, which is connected to a control switch; A control switch connected to the nano air pump for switching different gas sources input into the nano air pump, wherein the gas source includes an ozone gas source, an oxygen gas source or a hydrogen gas source; The nano air pump is used to aerate the irrigation water with oxygen to generate the irrigation water containing oxygen nanobubbles, or to aerate the irrigation water with hydrogen to generate the irrigation water containing hydrogen nanobubbles, or to aerate the irrigation water with ozone to generate the irrigation water containing ozone nanobubbles; The control switch is also used to control the ozone flow, oxygen flow or hydrogen flow input into the nano air pump, thereby changing the ozone aeration amount, oxygen aeration amount or hydrogen aeration amount of the nano air pump.

[0009] In some embodiments, the rhizosphere detection results include soil oxygen content and soil ORP value; Based on the rhizosphere detection results, the nano air pump is controlled to adjust the content of oxygen nano bubbles in the irrigation water, including: When the soil oxygen content is less than the first dissolved oxygen concentration, or the soil ORP value is less than the first ORP value, controlling the nano air pump to increase the oxygen aeration amount to increase the content of oxygen nano bubbles in the irrigation water; When the soil oxygen content is greater than or equal to the first dissolved oxygen concentration, the soil oxygen content is less than or equal to the second dissolved oxygen concentration, the soil ORP value is greater than or equal to the first ORP value, and the soil ORP value is less than or equal to the second ORP value, controlling the oxygen aeration amount of the nano air pump to remain unchanged so as to maintain the content of oxygen nano bubbles in the irrigation water unchanged; When the soil oxygen content is greater than the second dissolved oxygen concentration, controlling the nano air pump to reduce the oxygen aeration amount to reduce the content of oxygen nano bubbles in the irrigation water; The first dissolved oxygen concentration is lower than the second dissolved oxygen concentration, and the first ORP value is lower than the second ORP value.

[0010] In some embodiments, when controlling the nano air pump to increase or decrease the oxygen aeration amount, the method further comprises: Obtain the actual dissolved oxygen concentration of irrigation water currently irrigating crops in the soil matrix; determining a target dissolved oxygen concentration based on the actual dissolved oxygen concentration and a target oxygen content, wherein the target oxygen content is the oxygen content that the soil matrix should reach when the crop is growing vigorously, and the target dissolved oxygen concentration is the dissolved oxygen concentration of the adjusted irrigation water; Determining a target oxygen aeration volume based on a target dissolved oxygen concentration, wherein the target oxygen aeration volume is the oxygen aeration volume achieved by the nano air pump after increasing or decreasing the oxygen aeration volume; The target dissolved oxygen concentration is determined by the following formula:

[0011] in, Indicates the target dissolved oxygen concentration, Indicates the target oxygen content, represents the first deviation coefficient, Indicates the actual dissolved oxygen concentration; The target oxygen aeration rate is determined by the following formula:

[0012] in, Indicates the target oxygen aeration volume, Indicates the oxygen aeration amount corresponding to the irrigation water currently irrigating crops in the soil matrix, represents the oxygen regulation factor, Indicates the target dissolved oxygen concentration, Indicates the actual dissolved oxygen concentration. Indicates the correction factor.

[0013] In some embodiments, the rhizosphere test results include soil ORP values; Based on the rhizosphere detection results, the nano air pump is controlled to adjust the content of hydrogen nano bubbles in the irrigation water, including: When the soil ORP value is greater than or equal to the first ORP value and the soil ORP value is less than or equal to the second ORP value, controlling the hydrogen aeration amount of the nano air pump to remain unchanged so as to maintain the content of hydrogen nano bubbles in the irrigation water unchanged; When the soil ORP value is greater than the second ORP value, the nano air pump is controlled to increase the hydrogen aeration amount to increase the content of hydrogen nano bubbles in the irrigation water; The first ORP value is smaller than the second ORP value.

[0014] In some embodiments, when controlling the nano air pump to increase the hydrogen aeration amount, the method further includes: Obtain the actual ORP value of the irrigation water currently irrigating the crops in the soil matrix; determining a target ORP value based on the actual ORP value and a third ORP value, wherein the third ORP value is the ORP value that the soil matrix should reach when the crop is growing vigorously, and the target ORP value is the ORP value of the adjusted irrigation water; Determine the target hydrogen aeration volume based on the target ORP value and the actual ORP value, wherein the target hydrogen aeration volume is the hydrogen aeration volume achieved by the nano air pump after increasing the hydrogen aeration volume; The target ORP value is determined by the following formula:

[0015] in, Indicates the target ORP value, Indicates the third ORP value, represents the second coefficient of deviation, Indicates the actual ORP value; The target hydrogen aeration rate is determined by the following formula:

[0016] in, Indicates the target hydrogen aeration volume, represents the hydrogen regulation coefficient, Indicates the actual ORP value, Indicates the target ORP value. In some embodiments, the rhizosphere test results include soil ozone content; Based on the rhizosphere detection results, the nano air pump is controlled to adjust the content of ozone nanobubbles in the irrigation water, including: When the soil ozone content is less than the first ozone concentration, controlling the nano air pump to increase the ozone aeration volume to increase the content of ozone nano bubbles in the irrigation water; When the soil ozone content is greater than or equal to the first ozone concentration and the soil ozone content is less than or equal to the second ozone concentration, controlling the ozone aeration volume of the nano air pump to remain unchanged so as to maintain the content of ozone nano bubbles in the irrigation water unchanged; When the soil ozone content is greater than the second ozone concentration, controlling the nano air pump to reduce the ozone aeration amount to reduce the content of ozone nano bubbles in the irrigation water; The first ozone concentration is less than the second ozone concentration.

[0017] In some embodiments, when controlling the nano air pump to increase or decrease the amount of ozone aeration, the method further comprises: Obtain the actual ozone concentration of irrigation water currently irrigating crops in the soil matrix; Determine the target ozone concentration based on the actual ozone concentration and the target ozone content, where the target ozone content is the ozone content that the soil matrix should reach when meeting the crop disinfection requirements, and the target ozone concentration is the ozone concentration of the adjusted irrigation water; Determine the target ozone aeration volume based on the target ozone concentration and the actual ozone concentration, wherein the target ozone aeration volume is the ozone aeration volume achieved by the nano air pump after increasing the ozone aeration volume; The target ozone concentration is determined by the following formula:

[0018] in, Indicates the target ozone concentration, Indicates the target ozone content, represents the third coefficient of deviation, Indicates actual ozone concentration; Among them, the target ozone aeration volume is determined by the following formula:

[0019] in, Indicates the target ozone aeration volume, Indicates the amount of ozone aeration corresponding to the irrigation water currently used to irrigate crops in the soil matrix, represents the ozone regulation coefficient, Indicates the target ozone concentration, Indicates the actual ozone concentration.

[0020] In a second aspect, an embodiment of the present application provides a controller, the controller comprising: at least one processor; and a memory communicatively connected to at least one processor; wherein, The memory stores instructions that can be executed by at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to perform the nanobubble irrigation regulation method according to the first aspect.

[0021] In a third aspect, an embodiment of the present application provides an irrigation system, the irrigation system comprising: As the controller of the second aspect; A soil detection device, connected to the controller, for detecting the soil matrix to obtain rhizosphere detection results, and sending the rhizosphere detection results to the controller; a nano air pump connected to a controller and configured to generate irrigation water containing oxygen nano bubbles, hydrogen nano bubbles, or ozone nano bubbles; The irrigation device is connected to the nano air pump and is used to irrigate crops with regulated irrigation water.

[0022] In a fourth aspect, embodiments of the present application provide a non-volatile computer-readable storage medium storing computer-executable instructions for causing a controller to execute the nanobubble irrigation control method of the first aspect.

[0023] The beneficial effects of the embodiments of the present application are as follows: Different from the existing technology, the embodiments of the present application provide a nanobubble irrigation regulation method, which includes: obtaining rhizosphere detection results of a soil matrix, wherein a plurality of crops are planted in the soil matrix; based on the rhizosphere detection results, controlling a nano air pump to adjust the content of oxygen nano bubbles, hydrogen nano bubbles, and / or ozone nano bubbles in irrigation water to generate regulated irrigation water; and controlling an irrigation device to use the regulated irrigation water to irrigate the crops.

[0024] By obtaining rhizosphere detection results of the soil matrix, and based on the rhizosphere detection results, adjusting the content of oxygen nanobubbles, hydrogen nanobubbles, and / or ozone nanobubbles in the irrigation water to generate regulated irrigation water, and controlling the irrigation device to use the regulated irrigation water to irrigate crops, the present application can, on the one hand, regulate the content of oxygen nanobubbles in the irrigation water according to the actual conditions of the soil matrix to improve the respiratory environment of the crop roots, and regulate the content of ozone nanobubbles in the irrigation water to kill harmful microorganisms in the soil and irrigation water; On the other hand, the present application can regulate the content of oxygen nanobubbles or hydrogen nanobubbles in the irrigation water according to the actual conditions of the soil matrix, thereby regulating the redox potential value of the irrigation water and further optimizing the redox state of the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of an irrigation system provided by an embodiment of the present application; Figure 2 is a detailed structural diagram of an irrigation system provided in an embodiment of the present application; Figure 3 This is a flow chart of a nanobubble irrigation control method provided in an embodiment of the present application; Figure 4 is a schematic diagram of an irrigation process provided by an embodiment of the present application; Figure 5 This is a schematic diagram of the structure of a controller provided in an embodiment of the present application.

[0026] Description of Figure Numbers: DETAILED DESCRIPTION

[0027] In order to facilitate understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification and in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0029] The technical solution of this application is described in detail below with reference to the accompanying drawings: In agricultural cultivation, crop growth is influenced by oxygen supply and pest and disease control. Oxygen is essential for plant root respiration, and the dissolved oxygen concentration in irrigation water directly affects root respiration. Low dissolved oxygen concentrations weaken root activity, reducing nutrient and water absorption efficiency and potentially leading to root rot. Harmful microorganisms, such as pathogens, bacteria, and fungi, are often present in irrigation water, increasing the risk of plant root disease.

[0030] At present, oxygen is injected into irrigation water to increase the dissolved oxygen concentration in the water to improve the respiration of crops; ozone is injected into irrigation water to use its strong oxidizing properties to kill harmful microorganisms in the water.

[0031] However, existing oxygen or ozone injection methods are typically used in hydroponic systems. These methods typically set the injected oxygen or ozone concentration to a fixed value, ignoring soil factors. This makes it difficult to meet the dynamic control requirements of soil cultivation systems for the oxygen content of irrigation water or the dissolved ozone concentration. Hydroponic systems are agricultural systems that use nutrient solution instead of soil as the primary medium and nutrient source for plant growth.

[0032] Furthermore, crop growth is also affected by soil conditions. For example, the soil's redox state can affect crop yield and quality. Soil in a long-term reduced state is prone to heavy metal ion accumulation, increasing soil biotoxicity. Injecting oxygen or ozone into hydroponic systems does not improve soil redox conditions.

[0033] Based on this, the present application proposes a nanobubble irrigation regulation method. By regulating the content of oxygen nanobubbles, hydrogen nanobubbles or ozone nanobubbles in irrigation water according to the actual conditions of the soil matrix, the present application can improve the respiratory environment of crop roots, optimize the redox state of the soil or disinfect harmful microorganisms, thereby promoting crop growth.

[0034] See also Figure 1 , Figure 1 This is a structural diagram of an irrigation system provided by an embodiment of the present application; like Figure 1 As shown, the irrigation system 100 includes a soil detection device 101, a controller 102, a nano air pump 103, and an irrigation device 104. The controller 102 is connected to the soil detection device 101 and the nano air pump 103, and the nano air pump 103 is connected to the irrigation device 104.

[0035] The controller 102 controls the switch ( Figure 1 (not shown) is connected to the nano gas pump 103, and the control switch is used to switch different gas sources input into the nano gas pump and control the ozone flow, oxygen flow or hydrogen flow input into the nano gas pump, wherein the gas source includes an ozone gas source, an oxygen gas source or a hydrogen gas source.

[0036] Controller 102 communicates with the control switch and soil detection device 101 via a network, wherein the network can include a wired network and / or a wireless network. It is understood that the network can include wireless networks such as 2G, 3G, 4G, 5G, wireless LAN, and Bluetooth, as well as wired networks such as serial cables and network cables. Nano-air pump 103 is connected to irrigation device 104 via a first infusion pipeline. The first infusion pipeline is a pipeline located between nano-air pump 103 and irrigation device 104 for transporting conditioned irrigation water.

[0037] Soil testing device 101 is connected to controller 102 and is configured to test the soil matrix to obtain rhizosphere testing results, and transmit the rhizosphere testing results to controller 102. The soil matrix may contain a number of crops, and the rhizosphere testing results are obtained by testing the area surrounding the roots of the crops (i.e., the rhizosphere) in the soil matrix using soil testing device 101.

[0038] The controller 102 is connected to the soil detection device 101 and the nano-air pump 103 and is used to execute the nano-bubble irrigation control method of any of the following embodiments, for example: obtaining rhizosphere detection results of a soil matrix, wherein a plurality of crops are planted in the soil matrix; based on the rhizosphere detection results, controlling the nano-air pump 103 to adjust the content of oxygen nano-bubbles, hydrogen nano-bubbles, and / or ozone nano-bubbles in irrigation water to generate adjusted irrigation water; and controlling the irrigation device 104 to irrigate the crops using the adjusted irrigation water.

[0039] The nano air pump 103 is connected to the controller 102 and is used to generate irrigation water containing oxygen nano bubbles, hydrogen nano bubbles or ozone nano bubbles.

[0040] The irrigation device 104 is connected to the nano air pump 103 and is used to irrigate crops using the regulated irrigation water.

[0041] See also Figure 2 , Figure 2 is a detailed structural diagram of an irrigation system provided in an embodiment of the present application; like Figure 2 As shown, the irrigation system 100 includes: a soil detection device 101, a controller 102, a nano air pump 103, an irrigation device 104, a control switch 105, an oxygen source 106, a hydrogen source 107, an ozone source 108, a water supply device 109, and an irrigation water detection device 110.

[0042] The controller 102 is connected to the soil detection device 101, the control switch 105, and the irrigation water detection device 110 via a network communication. The network includes a wired network and / or a wireless network. It is understood that the network includes wireless networks such as 2G, 3G, 4G, 5G, wireless LAN, and Bluetooth, and may also include wired networks such as serial cables and network cables.

[0043] The control switch 105 is connected to an oxygen source 106, a hydrogen source 107, an ozone source 108, and the nano-air pump 103. The nano-air pump 103 is connected to the irrigation device 104 via a first infusion pipeline, which in turn is connected to the water supply device 109 via a second infusion pipeline. The first infusion pipeline, located between the nano-air pump 103 and the irrigation device 104, is used to transport regulated irrigation water. The second infusion pipeline, located between the water supply device 109 and the nano-air pump 103, is used to transport unregulated irrigation water. An irrigation water detection device 110 is connected to the second infusion pipeline and, for example, is installed within the first infusion pipeline.

[0044] Soil testing device 101 is connected to controller 102 and is configured to test the soil matrix to obtain rhizosphere testing results, and transmit the rhizosphere testing results to controller 102. The soil matrix may contain a number of crops, and the rhizosphere testing results are obtained by testing the area surrounding the roots of the crops in the soil matrix (i.e., the rhizosphere).

[0045] In an embodiment of the present application, when only daily irrigation of crops is required and soil disinfection is not required, the soil detection device 101 includes a first oxygen sensor and an oxidation-reduction potential probe, and the rhizosphere detection results include soil oxygen content and / or soil ORP value.

[0046] The first oxygen sensor is used to detect soil oxygen content, and the redox potential probe is used to detect soil ORP. Soil oxygen content is the concentration of dissolved oxygen in the soil matrix. Dissolved oxygen refers to the oxygen dissolved in water within the soil. The soil ORP value is the numerical value of the soil matrix's redox potential, reflecting the soil matrix's redox state. Higher ORP values indicate a more oxidizing soil matrix, while lower ORP values indicate a more reducing soil matrix.

[0047] In an embodiment of the present application, when soil disinfection is required, the soil detection device 101 includes a first ozone sensor, and the rhizosphere detection result includes the soil ozone content. The first ozone sensor is an ozone sensor for detecting the soil ozone content, which is the concentration of ozone gas contained in a unit volume or unit mass of the soil matrix.

[0048] The specific type of the soil detection device 101 and its specific installation position in the soil matrix can be set by those skilled in the art according to actual application scenarios and are not limited here.

[0049] The controller 102 is connected to the soil detection device 101, the control switch 105, and the irrigation water detection device 110, and is used to execute the nanobubble irrigation control method of any of the following embodiments, for example: obtaining rhizosphere detection results of a soil matrix, wherein a plurality of crops are planted in the soil matrix; based on the rhizosphere detection results, controlling the nanoair pump 103 to adjust the content of oxygen nanobubbles, hydrogen nanobubbles, and / or ozone nanobubbles in the irrigation water to generate adjusted irrigation water; and controlling the irrigation device 104 to use the adjusted irrigation water to irrigate the crops.

[0050] In some embodiments, the controller 102 is further configured to obtain the irrigation water detection results sent by the irrigation water detection device 110 , and to combine the rhizosphere detection results with the irrigation water detection results to control the nano air pump 103 to adjust the content of oxygen nano bubbles, hydrogen nano bubbles, and / or ozone nano bubbles in the irrigation water.

[0051] In some embodiments, the controller 102 is directly connected to the nano-gas pump 103, and the controller 102 is also used to start the nano-gas pump 103, or control the nano-gas pump 103 to stop running, or adjust the operating parameters of the nano-gas pump 103. The operating parameters include but are not limited to pressure, power, etc.

[0052] The controller 102 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), a single-chip microcomputer, an ARM (Acorn RISC Machine) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of these components. The controller can also be any conventional processor, controller, microcontroller, or state machine. The controller can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP and / or any other such configuration, or a combination of one or more of a microcontroller unit (MCU), a field-programmable gate array (FPGA), or a system-on-chip (SoC).

[0053] The nano air pump 103 is connected to the control switch 105, the water supply device 109, and the irrigation device 104, and is used to generate irrigation water containing oxygen nano bubbles, hydrogen nano bubbles, or ozone nano bubbles.

[0054] The nanogas pump 103 is a high-precision, miniature gas injection device that can inject gas into water in the form of nanoscale bubbles. Oxygen nanobubbles are oxygen bubbles with a diameter less than 200 nanometers dispersed in a liquid medium (e.g., irrigation water); hydrogen nanobubbles are hydrogen bubbles with a diameter less than 200 nanometers dispersed in a liquid medium (e.g., irrigation water); and ozone nanobubbles are ozone bubbles with a diameter less than 200 nanometers dispersed in a liquid medium (e.g., irrigation water).

[0055] Specifically, nano-air pump 103 receives irrigation water from water supply device 109 and gas (oxygen, hydrogen, or ozone) supplied by control switch 105. It then aerates the irrigation water to produce nanobubbles (oxygen, hydrogen, or ozone). Aeration is the process of introducing gas into water through physical or mechanical means to produce nanobubble water.

[0056] For example, the nano air pump 103 introduces oxygen into the irrigation water to generate irrigation water containing oxygen nanobubbles, or introduces hydrogen into the irrigation water to generate irrigation water containing hydrogen nanobubbles, or introduces ozone into the irrigation water to generate irrigation water containing ozone nanobubbles.

[0057] Irrigation device 104, connected to nano-air pump 103, is used to irrigate crops with conditioned irrigation water. One end of irrigation device 104 is connected to nano-air pump 103, and the other end is positioned near the roots of the crops. The type and specific placement of irrigation device 104 can be determined by those skilled in the art based on the crop type and are not limited here. Illustrative example: irrigation device 104 is a drip tape.

[0058] The control switch 105 is connected to the controller 102, the nano-gas pump 103, the oxygen source 106, the hydrogen source 107, and the ozone source 108, and is used to switch between different gas sources input to the nano-gas pump 103. For example, the control switch 105 can switch between different gas sources input to the nano-gas pump 103 according to instructions sent by the controller 102. The gas sources include the oxygen source 106, the hydrogen source 107, or the ozone source 108. The control switch 105 includes, but is not limited to, a solenoid valve.

[0059] In the embodiment of the present application, the control switch 105 is also used to control the ozone flow, oxygen flow or hydrogen flow input to the nano air pump 103, thereby changing the ozone aeration amount, oxygen aeration amount or hydrogen aeration amount of the nano air pump 103.

[0060] The ozone flow rate is the mass flow rate or volume flow rate of ozone gas input into the nano-air pump 103 via the control switch 105 per unit time. The oxygen flow rate is the mass flow rate or volume flow rate of oxygen input into the nano-air pump 103 via the control switch 105 per unit time. The hydrogen flow rate is the mass flow rate or volume flow rate of oxygen input into the nano-air pump 103 via the control switch 105 per unit time. The ozone aeration rate is the total amount of ozone introduced into the irrigation water by the nano-air pump 103 per unit time. The oxygen aeration rate is the total amount of oxygen introduced into the irrigation water by the nano-air pump 103 per unit time. The hydrogen aeration rate is the total amount of hydrogen introduced into the irrigation water by the nano-air pump 103 per unit time.

[0061] For example: according to the instructions sent by the controller 102, the ozone flow rate input to the nano-air pump 103 is controlled to adjust the ozone aeration amount of the nano-air pump 103; or, according to the instructions sent by the controller 102, the oxygen flow rate input to the nano-air pump 103 is controlled to adjust the oxygen aeration amount of the nano-air pump 103; or, according to the instructions sent by the controller 102, the hydrogen flow rate input to the nano-air pump 103 is controlled to adjust the hydrogen aeration amount of the nano-air pump 103.

[0062] The oxygen source 106 is connected to the control switch 105 and is used to provide oxygen to the nano gas pump 103 .

[0063] The hydrogen gas source 107 is connected to the control switch 105 and is used to provide hydrogen to the nano gas pump 103 .

[0064] The ozone source 108 is connected to the control switch 105 and is used to provide ozone gas to the nano air pump 103 .

[0065] The oxygen gas source 106 , the hydrogen gas source 107 , and the ozone gas source 108 may be finished gas tanks storing gases, or may be generators for preparing gases.

[0066] The water supply device 109 is connected to the nano air pump 103 and is used to deliver irrigation water to the nano air pump 103. The water supply device 109 includes a water source and a water purifier. The water source is used to provide irrigation water, and the water purifier is used to filter impurity particles in the irrigation water.

[0067] The irrigation water detection device 110 is connected to the controller 102 and the second liquid infusion pipeline, and is used to detect the irrigation water transported by the first liquid infusion pipeline to obtain an irrigation water detection result, and send the irrigation water detection result to the controller 102. The irrigation water detection result is the detection result obtained by the irrigation water detection device 110 on the irrigation water in the first liquid infusion pipeline.

[0068] In an embodiment of the present application, when only daily irrigation of crops is required and soil disinfection is not required, the irrigation water detection device 110 includes a second oxygen sensor and an oxidation-reduction potential sensor, and the irrigation water detection results include actual dissolved oxygen concentration and / or actual ORP value.

[0069] The second oxygen sensor is an oxygen sensor for detecting the actual dissolved oxygen concentration of the irrigation water in the first infusion pipeline, and the redox potential sensor is used to detect the actual ORP value of the irrigation water in the first infusion pipeline. The actual dissolved oxygen concentration is the concentration of dissolved oxygen in the irrigation water in the first infusion pipeline, and the actual ORP value is the redox potential value of the irrigation water in the first infusion pipeline. In this embodiment of the present application, when soil disinfection is required, the irrigation water detection device 110 includes a second ozone sensor, and the irrigation water detection result includes the actual ozone concentration. The second ozone sensor is an ozone sensor for detecting the ozone concentration of the irrigation water in the first infusion pipeline. The actual ozone concentration is the mass concentration of ozone gas dissolved in a unit volume of irrigation water in the first infusion pipeline.

[0070] The specific type of the irrigation water detection device 110 and its specific installation position in the first liquid delivery pipeline can be set by those skilled in the art according to actual application scenarios and are not limited here.

[0071] In some embodiments, the irrigation system 100 further includes a drug input source, which is connected to the irrigation device and is used to deliver nutrient solution.

[0072] In some embodiments, the irrigation system 100 further includes a fertilizer applicator. The fertilizer applicator is connected to the irrigation device and is used to inject fertilizer into the regulated irrigation water to obtain water-fertilizer, so that the irrigation device uses the water-fertilizer to irrigate crops.

[0073] See also Figure 3 , Figure 3 This is a flow chart of a nanobubble irrigation control method provided in an embodiment of the present application; The nanobubble irrigation control method is applied to a controller, for example: the nanobubble irrigation control method is applied to a controller. Figure 1 or Figure 2 The controller 102 in the irrigation system 100 is shown. Specifically, the nanobubble irrigation control method is executed by at least one processor of the controller.

[0074] like Figure 3 As shown, the nanobubble irrigation control method includes: Step S301: obtaining the rhizosphere detection result of the soil matrix; In the soil matrix, several crops are planted. The rhizosphere detection results are obtained by testing the area surrounding the crop roots (i.e., the rhizosphere) in the soil matrix. The rhizosphere detection results are obtained by soil detection device 101 disposed in the soil matrix. The rhizosphere detection results include at least one of soil oxygen content, soil ORP value, and soil ozone content.

[0075] Specifically, the controller 102 receives the rhizosphere detection result sent by the soil detection device 101.

[0076] In some embodiments, when only daily irrigation of crops is required and soil disinfection is not required, the rhizosphere detection results include soil oxygen content and / or soil ORP value.

[0077] In some embodiments, when soil disinfection treatment is required, the rhizosphere detection results include soil ozone content.

[0078] Step S302: Based on the rhizosphere detection result, controlling the nano air pump to adjust the content of oxygen nano bubbles, hydrogen nano bubbles and / or ozone nano bubbles in the irrigation water to generate adjusted irrigation water; The regulated irrigation water is the irrigation water obtained by regulating the content of oxygen nanobubbles, hydrogen nanobubbles and / or ozone nanobubbles by the nano air pump 103 based on the rhizosphere detection result.

[0079] Specifically, the controller 102 determines whether to adjust the gas source and / or aeration volume input to the nano-air pump 103 based on the rhizosphere detection results. If adjustment is required, the controller 102 switches the gas source input to the nano-air pump 103 by controlling the switch 105, and / or controls the ozone flow, oxygen flow, or hydrogen flow input to the nano-air pump 103, thereby controlling the nano-air pump 103 to adjust the content of oxygen nanobubbles, hydrogen nanobubbles, and / or ozone nanobubbles in the irrigation water to generate regulated irrigation water.

[0080] If no adjustment is required, the current process is terminated, and after the soil detection device 101 sends a new rhizosphere detection result, steps S301 to S303 are executed again.

[0081] In the present embodiment, ozone is used only for soil disinfection. Oxygen is used to increase the actual dissolved oxygen concentration and / or actual ORP value of the irrigation water, thereby increasing the soil oxygen content and / or soil ORP value. Hydrogen is used to reduce the actual ORP value of the irrigation water, thereby reducing the soil ORP value.

[0082] In some embodiments, when only daily irrigation of crops is required and soil disinfection is not required, the rhizosphere detection results include soil oxygen content and soil ORP value. Based on the rhizosphere detection results, the step of controlling the nano air pump to adjust the content of oxygen nano bubbles in the irrigation water includes steps S321-S323: Step S321: When the soil oxygen content is less than the first dissolved oxygen concentration, or the soil ORP value is less than the first ORP value, controlling the nano air pump to increase the oxygen aeration volume to increase the content of oxygen nano bubbles in the irrigation water; The first dissolved oxygen concentration is the minimum oxygen content that the soil matrix should reach for normal crop growth. The first ORP value is the minimum ORP value that the soil matrix should reach for normal crop growth. The first dissolved oxygen concentration and the first ORP value can be determined by those skilled in the art based on the crop type, crop growth conditions, and the actual conditions of the soil matrix, and are not limited here.

[0083] Specifically, when the soil oxygen content is lower than the first dissolved oxygen concentration, the soil oxygen content cannot meet the normal growth needs of crops. The controller 102 controls the nano air pump 103 to increase the oxygen aeration amount through the control switch 105 to increase the content of oxygen nano bubbles in the irrigation water, thereby increasing the actual dissolved oxygen concentration of the irrigation water, and then increasing the soil oxygen content.

[0084] Alternatively, when the soil ORP value is less than the first ORP value, the soil matrix has a strong reducing property and is prone to accumulating heavy metal ions, thereby inhibiting the activity of beneficial microorganisms. The controller 102 controls the nano air pump 103 to increase the oxygen aeration volume by controlling the switch 105 to increase the content of oxygen nanobubbles in the irrigation water, thereby increasing the actual ORP value of the irrigation water and further increasing the soil ORP value.

[0085] For example, the controller 102 sends a first instruction to the control switch 105, which is used to control the control switch 105 to increase the oxygen flow rate input to the nano-air pump 103. After receiving the instruction, the control switch 105 increases the oxygen flow rate input to the nano-air pump 103, thereby causing the nano-air pump 103 to increase the oxygen aeration amount, thereby increasing the content of oxygen nanobubbles in the irrigation water.

[0086] Step S322: When the soil oxygen content is greater than or equal to the first dissolved oxygen concentration and the soil oxygen content is less than or equal to the second dissolved oxygen concentration, and the soil ORP value is greater than or equal to the first ORP value and the soil ORP value is less than or equal to the second ORP value, controlling the oxygen aeration rate of the nano air pump to remain unchanged so as to maintain the content of oxygen nano bubbles in the irrigation water unchanged; The first dissolved oxygen concentration is less than the second dissolved oxygen concentration, and the first ORP value is less than the second ORP value. The second dissolved oxygen concentration is the maximum oxygen content that the soil matrix can reach during normal crop growth. The second ORP value is the maximum ORP value that the soil matrix can reach during normal crop growth. The second dissolved oxygen concentration and the second ORP value can be determined by those skilled in the art based on the crop type, crop growth conditions, and actual conditions of the soil matrix, and are not limited herein.

[0087] Specifically, when the soil oxygen content is greater than or equal to the first dissolved oxygen concentration, the soil oxygen content is less than or equal to the second dissolved oxygen concentration, the soil ORP value is greater than or equal to the first ORP value, and the soil ORP value is less than or equal to the second ORP value, the soil matrix meets the normal growth requirements of the crop, and the controller 102 does not need to be adjusted. The control switch 105 continues to supply oxygen to the nano air pump 103 at the oxygen flow rate supplied to the nano air pump 103 last time. At this time, the oxygen aeration amount of the nano air pump 103 remains unchanged, and the content of oxygen nano bubbles in the irrigation water also remains unchanged.

[0088] Step S323: When the soil oxygen content is greater than the second dissolved oxygen concentration, the nano air pump is controlled to reduce the oxygen aeration amount to reduce the content of oxygen nano bubbles in the irrigation water.

[0089] Specifically, when the soil oxygen content is greater than the second dissolved oxygen concentration, the soil oxygen content is too high, which can easily lead to oxidative stress in the crop roots, hinder nutrient absorption, and destroy the balance of the rhizosphere microbial community. The controller 102 controls the nano air pump 103 through the control switch 105 to reduce the oxygen aeration amount to reduce the content of oxygen nano bubbles in the irrigation water, thereby reducing the actual dissolved oxygen concentration of the irrigation water, and then reducing the soil oxygen content.

[0090] For example, the controller 102 sends a second instruction to the control switch 105, which is used to control the control switch 105 to reduce the oxygen flow rate input to the nano-air pump 103. After receiving the instruction, the control switch 105 reduces the oxygen flow rate input to the nano-air pump 103, thereby causing the nano-air pump 103 to reduce the oxygen aeration amount, thereby reducing the content of oxygen nanobubbles in the irrigation water.

[0091] In the case of controlling the nano air pump to increase or decrease the oxygen aeration volume, the method further includes: determining a target oxygen aeration volume, wherein the target oxygen aeration volume is the oxygen aeration volume achieved by the nano air pump after increasing or decreasing the oxygen aeration volume.

[0092] The step of determining the target oxygen aeration amount includes steps S1 to S3: Step S1: obtaining the actual dissolved oxygen concentration of irrigation water currently irrigating crops in the soil matrix; The actual dissolved oxygen concentration is detected by the irrigation water detection device 110. The irrigation water generated by the nano air pump 103 each time (i.e., the regulated irrigation water mentioned above) is detected by the irrigation water detection device 110 and then transported to the irrigation device 104 for irrigating crops.

[0093] The irrigation water currently irrigating the crops in the soil matrix is the irrigation water last generated by the nano-air pump 103 (i.e., the regulated irrigation water mentioned above). When the irrigation water passes through the irrigation water detection device 110, the irrigation water detection device 110 detects the irrigation water and obtains the irrigation water detection result, which is then sent to the controller 102. The irrigation water detection result includes the actual dissolved oxygen concentration.

[0094] Specifically, the controller 102 receives the actual dissolved oxygen concentration of the irrigation water currently irrigating the crops in the soil matrix sent by the irrigation water detection device 110 .

[0095] Step S2: determining a target dissolved oxygen concentration based on the actual dissolved oxygen concentration and the target oxygen content; The target oxygen content is the oxygen content that the soil matrix should reach for vigorous crop growth, i.e., the oxygen concentration required for optimal crop growth and development within the soil matrix. The target oxygen content is greater than or equal to the first dissolved oxygen concentration, and less than or equal to the second dissolved oxygen concentration. The target dissolved oxygen concentration is the dissolved oxygen concentration of the adjusted irrigation water. The target oxygen content can be set by those skilled in the art based on crop species, soil type, crop growth cycle, and planting experience, and is not limited here.

[0096] Specifically, the target dissolved oxygen concentration is determined by the following formula:

[0097] in, Indicates the target dissolved oxygen concentration, Indicates the target oxygen content, represents the first deviation coefficient, Indicates the actual dissolved oxygen concentration.

[0098] Among them, the first deviation coefficient represents the adjustment weight of the deviation between the target oxygen content and the actual dissolved oxygen concentration on the target dissolved oxygen concentration, which is used to compensate for the influence of environmental factors (such as temperature, pH value, soil matrix characteristics) and system factors (such as nano air pump efficiency, detection device error) on the dissolved oxygen concentration that are not considered in the formula. The first deviation coefficient can be determined by those skilled in the art through experiments or empirical values, and is not limited here. For example: by experimentally testing different actual dissolved oxygen concentrations, fitting the target dissolved oxygen concentration that is closest to the crop growth requirement .

[0099] Step S3: Determine the target oxygen aeration amount based on the target dissolved oxygen concentration.

[0100] The target oxygen aeration volume is the oxygen aeration volume achieved by the nano air pump after increasing or decreasing the oxygen aeration volume.

[0101] Specifically, the target oxygen aeration volume is determined by the following formula:

[0102] in, Indicates the target oxygen aeration volume, Indicates the oxygen aeration amount corresponding to the irrigation water currently irrigating crops in the soil matrix, represents the oxygen regulation factor, Indicates the target dissolved oxygen concentration, Indicates the actual dissolved oxygen concentration. Indicates the correction factor.

[0103] Among them, the current irrigation water for irrigating crops in the soil matrix is obtained by the nano air pump's last adjustment. The oxygen aeration volume corresponding to the current irrigation water for irrigating crops in the soil matrix is also the target oxygen aeration volume achieved by the nano air pump during the last adjustment. The oxygen regulation coefficient represents the oxygen aeration volume to the dissolved oxygen concentration difference. The response efficiency reflects the relationship between the aeration rate and time required to adjust the unit dissolved oxygen concentration difference. The correction coefficient represents the impact of soil ORP value on the adjustment of oxygen aeration rate.

[0104] The oxygen adjustment coefficient and correction coefficient can be determined by those skilled in the art through experiments or empirical values, and are not limited here. For example, by experimentally testing the actual dissolved oxygen concentration under different oxygen aeration rates, keeping the target dissolved oxygen concentration unchanged, determining the difference between the target dissolved oxygen concentration and the actual dissolved oxygen concentration, and fitting the difference between the target dissolved oxygen concentration and the actual dissolved oxygen concentration to be closest to the difference in oxygen aeration rates between two experiments. .

[0105] For example: Under the condition that the difference between the target dissolved oxygen concentration and the actual dissolved oxygen concentration remains unchanged, adjust the oxygen aeration rate, record the soil ORP value under different oxygen aeration rates, and establish the relationship between soil ORP value and soil ORP value. relational model.

[0106] In the embodiments of the present application, by adjusting the content of oxygen nanobubbles in the irrigation water, the present application can regulate the actual dissolved oxygen concentration of the irrigation water according to the needs of different crops, thereby regulating the soil oxygen content, improving the respiratory environment of the crop roots, and reducing the occurrence of overoxygenation.

[0107] In some embodiments, the rhizosphere detection result includes the soil ORP value. Based on the rhizosphere detection result, the step of controlling the nano air pump to adjust the content of hydrogen nano bubbles in the irrigation water includes steps S324-S325: Step S324: When the soil ORP value is greater than or equal to the first ORP value and less than or equal to the second ORP value, controlling the hydrogen aeration rate of the nano air pump to remain unchanged so as to maintain the content of hydrogen nano bubbles in the irrigation water unchanged; The first ORP value is smaller than the second ORP value.

[0108] Specifically, when the soil ORP value is greater than or equal to the first ORP value and less than or equal to the second ORP value, the redox state of the soil matrix can meet the needs of normal crop growth. The controller 102 does not need to be adjusted. The control switch 105 continues to supply hydrogen to the nano air pump 103 at the hydrogen flow rate supplied to the nano air pump 103 last time. At this time, the hydrogen aeration amount of the nano air pump 103 remains unchanged, and the content of hydrogen nano bubbles in the irrigation water also remains unchanged.

[0109] Step S325: When the soil ORP value is greater than the second ORP value, the nano air pump is controlled to increase the hydrogen aeration volume to increase the content of hydrogen nano bubbles in the irrigation water.

[0110] Specifically, when the soil ORP value is greater than or equal to the first ORP value and less than or equal to the second ORP value, the oxidizing property of the soil matrix is too strong, which will cause the effective components (such as Fe 2+ ) and increases the content of nitrate nitrogen, thereby changing the composition of irrigation water or nutrient solution. The controller 102 controls the nano air pump 103 to increase the hydrogen aeration volume through the control switch 105 to increase the content of hydrogen nano bubbles in the irrigation water, thereby reducing the actual ORP value of the irrigation water and further reducing the ORP value of the soil.

[0111] For example, the controller 102 sends a third instruction to the control switch 105, which is used to control the control switch 105 to increase the hydrogen flow rate input to the nano-air pump 103. After receiving the instruction, the control switch 105 increases the hydrogen flow rate input to the nano-air pump 103, thereby causing the nano-air pump 103 to increase the hydrogen aeration volume, thereby increasing the content of hydrogen nanobubbles in the irrigation water.

[0112] In the case of controlling the nano air pump to increase the hydrogen aeration volume, the method further includes: determining a target hydrogen aeration volume, wherein the target hydrogen aeration volume is the hydrogen aeration volume achieved by the nano air pump after the hydrogen aeration volume is increased.

[0113] The step of determining the target hydrogen aeration amount specifically includes steps S4 to S6: Step S4: obtaining the actual ORP value of the irrigation water currently irrigating the crops in the soil matrix; The irrigation water detection result includes an actual ORP value, which is detected by the irrigation water detection device 110. The irrigation water currently irrigating the crops in the soil matrix is the irrigation water last generated by the nano-air pump 103 (i.e., the regulated irrigation water mentioned above). When the irrigation water passes through the irrigation water detection device 110, the irrigation water detection device 110 detects the irrigation water and obtains the irrigation water detection result, which is then sent to the controller 102.

[0114] Specifically, the controller 102 receives the actual ORP value of the irrigation water currently irrigating the crops in the soil matrix sent by the irrigation water detection device 110 .

[0115] Step S5: determining a target ORP value based on the actual ORP value and the third ORP value; The third ORP value is the ORP value that the soil matrix should reach when the crop is growing vigorously, that is, the ORP value that the soil matrix should reach when the crop in the soil matrix reaches optimal growth and development conditions. The target ORP value is the ORP value of the adjusted irrigation water. The third ORP value is greater than or equal to the first ORP value and less than or equal to the second ORP value. The third ORP value can be set by those skilled in the art based on the crop type, soil type, crop growth cycle, and planting experience, and is not limited here.

[0116] Specifically, the target ORP value is determined by the following formula:

[0117] in, Indicates the target ORP value, Indicates the third ORP value, represents the second coefficient of deviation, Indicates the actual ORP value.

[0118] The second deviation coefficient represents the adjustment weight of the deviation between the third ORP value and the actual ORP value on the target ORP value, which is used to compensate for the impact of environmental factors (such as temperature, pH value, soil matrix properties) on the ORP value that are not considered in the formula. The second deviation coefficient can be determined by those skilled in the art through experiments and is not limited here. For example, by experimentally testing different actual ORP values, the target ORP value that is closest to the crop growth requirements can be fitted. .

[0119] Step S6: Determine the target hydrogen aeration rate based on the target ORP value and the actual ORP value.

[0120] Specifically, the target hydrogen aeration rate is determined by the following formula:

[0121] in, Indicates the target hydrogen aeration volume, represents the hydrogen regulation coefficient, Indicates the actual ORP value, Indicates the target ORP value. The hydrogen adjustment coefficient represents the adjustment weight of the deviation between the actual ORP value and the target ORP value on the target hydrogen aeration amount, which reflects the sensitivity and intensity of adjusting the redox potential by hydrogen aeration. The hydrogen adjustment coefficient can be determined by those skilled in the art through experiments or experience, and is not limited here. For example, by experimentally testing the actual ORP value and dissolved oxygen concentration under different hydrogen aeration amounts, keeping the target ORP value unchanged, the actual ORP value closest to the target ORP value is fitted. , while ensuring that the dissolved oxygen concentration meets the needs of crop growth.

[0122] In the embodiments of the present application, by adjusting the content of oxygen nanobubbles and / or hydrogen nanobubbles in the irrigation water, the present application can regulate the actual ORP value of the irrigation water according to the needs of different crops, thereby regulating the ORP value of the soil, so that the soil matrix reaches a redox state that is conducive to crop growth.

[0123] For example, increasing the soil ORP value (i.e., increasing soil oxidizability) can improve soil nutrient supply, prevent the accumulation of reduced heavy metal ions, and promote the activity of beneficial microorganisms (such as nitrogen-fixing bacteria). When the soil ORP value is greater than the second ORP value, lowering the soil ORP value can reduce the effectiveness of irrigation water or nutrient solution components.

[0124] In some embodiments, when soil disinfection treatment is required, the rhizosphere detection result includes the soil ozone content. Based on the rhizosphere detection result, the step of controlling the nano air pump to adjust the content of ozone nano bubbles in the irrigation water includes steps S326 to S328: Step S326: When the soil ozone content is less than the first ozone concentration, controlling the nano air pump to increase the ozone aeration volume to increase the content of ozone nano bubbles in the irrigation water; The first ozone concentration is the minimum ozone content that the soil matrix should reach during soil disinfection. The first ozone concentration can be determined by those skilled in the art based on the crop type, crop growth conditions, and actual conditions of the soil matrix, and is not limited here.

[0125] Specifically, when the soil oxygen content is less than the first ozone concentration, harmful microorganisms exist in the soil matrix. The controller 102 controls the nano air pump 103 to increase the ozone aeration volume through the control switch 105 to increase the content of ozone nano bubbles in the irrigation water, thereby increasing the actual ozone concentration of the irrigation water and further increasing the soil ozone content.

[0126] For example, the controller 102 sends a fourth instruction to the control switch 105, which is used to control the control switch 105 to increase the ozone flow rate input to the nano-air pump 103. After receiving the instruction, the control switch 105 increases the ozone flow rate input to the nano-air pump 103, thereby causing the nano-air pump 103 to increase the ozone aeration amount, thereby increasing the content of ozone nanobubbles in the irrigation water.

[0127] Step S327: When the soil ozone content is greater than or equal to the first ozone concentration and less than or equal to the second ozone concentration, controlling the ozone aeration volume of the nano air pump to remain unchanged so as to maintain the content of ozone nano bubbles in the irrigation water unchanged; The first ozone concentration is less than the second ozone concentration. The second ozone concentration is the maximum ozone content that can be achieved in the soil matrix during soil disinfection. The second ozone concentration can be determined by those skilled in the art based on the crop type, crop growth conditions, and the actual conditions of the soil matrix, and is not limited here.

[0128] Specifically, when the soil ozone content is greater than or equal to the first ozone concentration and the soil ozone content is less than or equal to the second ozone concentration, harmful microorganisms in the soil and irrigation water can be killed without excessive disinfection. The controller 102 does not need to be adjusted. The control switch 105 continues to supply ozone to the nano air pump 103 at the ozone flow rate supplied to the nano air pump 103 last time. At this time, the ozone aeration volume of the nano air pump 103 remains unchanged, and the content of ozone nano bubbles in the irrigation water also remains unchanged.

[0129] Step S328: When the soil ozone content is greater than the second ozone concentration, controlling the nano air pump to reduce the ozone aeration amount to reduce the content of ozone nano bubbles in the irrigation water.

[0130] Specifically, when the soil ozone content is greater than the second ozone concentration, excessive disinfection is performed and the beneficial microorganisms in the soil will be over-suppressed. The controller 102 controls the nano air pump 103 to reduce the ozone aeration amount through the control switch 105 to reduce the content of ozone nano bubbles in the irrigation water, thereby reducing the actual ozone concentration of the irrigation water and further reducing the soil ozone content.

[0131] For example, the controller 102 sends a fifth instruction to the control switch 105, which is used to control the control switch 105 to reduce the ozone flow rate input to the nano-air pump 103. After receiving the instruction, the control switch 105 reduces the ozone flow rate input to the nano-air pump 103, thereby causing the nano-air pump 103 to reduce the ozone aeration amount, thereby reducing the content of ozone nanobubbles in the irrigation water.

[0132] In the case of controlling the nano air pump to increase or decrease the ozone aeration volume, the method further includes: determining a target ozone aeration volume. The target ozone aeration volume is the ozone aeration volume achieved by the nano air pump after increasing the ozone aeration volume. The step of determining the target ozone aeration amount specifically includes steps S7 to S9: Step S7: obtaining the actual ozone concentration of the irrigation water currently irrigating the crops in the soil matrix; When soil disinfection is required, the irrigation water detection results include the actual ozone concentration, which is detected by the irrigation water detection device 110. The irrigation water currently irrigating the crops in the soil matrix is the irrigation water last generated by the nano-air pump 103 (i.e., the regulated irrigation water mentioned above). When this irrigation water passes through the irrigation water detection device 110, the irrigation water detection device 110 will detect and obtain the irrigation water detection result, and send the irrigation water detection result to the controller 102.

[0133] Specifically, the controller 102 receives the actual ozone concentration of the irrigation water currently irrigating the crops in the soil matrix sent by the irrigation water detection device 110 .

[0134] Step S8: determining a target ozone concentration based on the actual ozone concentration and the target ozone content; The target ozone content is the ozone content that should be achieved when the soil matrix meets the requirements for crop disinfection. This refers to the ozone content that can kill most pathogens and pests while minimizing damage to beneficial microorganisms, and maintains a soil ORP value greater than or equal to a first ORP value and less than or equal to a second ORP value. The target ozone concentration is the ozone concentration of the adjusted irrigation water. The target ozone content is greater than or equal to the first ozone concentration and less than or equal to the second ozone concentration. The target ozone content can be set by those skilled in the art based on crop species, soil type, and planting experience, and is not limited here.

[0135] Specifically, the target ozone concentration is determined by the following formula:

[0136] in, Indicates the target ozone concentration, Indicates the target ozone content, represents the third coefficient of deviation, Indicates the actual ozone concentration.

[0137] The third deviation coefficient represents the adjustment weight of the deviation between the target ozone content and the actual ozone concentration on the target ozone concentration. It is used to compensate for the impact of environmental factors (such as temperature, pH value, soil matrix characteristics) on the ozone concentration that are not considered in the formula. The third deviation coefficient can be determined by those skilled in the art through experiments or empirical values and is not limited here. For example: by experimentally testing different actual ozone concentrations, fitting the target ozone concentration closest to the crop disinfection requirement .

[0138] Step S9: determining a target ozone aeration amount based on the target ozone concentration and the actual ozone concentration.

[0139] Specifically, the target ozone aeration volume is determined by the following formula:

[0140] in, Indicates the target ozone aeration volume, Indicates the amount of ozone aeration corresponding to the irrigation water currently used to irrigate crops in the soil matrix, represents the ozone regulation coefficient, Indicates the target ozone concentration, Indicates the actual ozone concentration.

[0141] Among them, the irrigation water currently irrigating the crops in the soil matrix is obtained by the nano air pump in the last adjustment, and the ozone aeration volume corresponding to the irrigation water currently irrigating the crops in the soil matrix is also the target ozone aeration volume achieved by the nano air pump in the last adjustment.

[0142] The ozone regulation coefficient represents the difference between the amount of ozone aeration and the ozone concentration. The response efficiency reflects the relationship between the aeration volume and time required to adjust the unit ozone concentration difference. The ozone adjustment coefficient can be determined by those skilled in the art through experiments or empirical values, and is not limited here. For example, by experimentally testing the actual ozone concentration under different ozone aeration volumes, keeping the target ozone concentration unchanged, determining the difference between the target ozone concentration and the actual ozone concentration, and fitting the difference between the target ozone concentration and the actual ozone concentration to be closest to the difference in ozone aeration volume between each two experiments. .

[0143] In the embodiments of the present application, by adjusting the content of ozone nanobubbles in the irrigation water, the present application can regulate the actual ozone concentration of the irrigation water according to the needs of different crops, thereby regulating the ozone content in the soil, killing harmful microorganisms in the soil and irrigation water, and preventing and controlling soil-borne diseases. It can also reduce the occurrence of excessive disinfection, thereby reducing the excessive suppression of beneficial microorganisms in the soil, which is beneficial to the microecological balance of the soil and promotes the healthy growth of crops.

[0144] After determining the target oxygen aeration amount, the target hydrogen aeration amount and / or the target ozone aeration amount, the method further includes: determining the gas flow rate input to the nano air pump according to the target aeration amount, and inputting the corresponding gas to the nano air pump through the control switch 105.

[0145] The target aeration volume includes a target oxygen aeration volume, a target hydrogen aeration volume or a target ozone aeration volume, and the gas flow rate includes an oxygen flow rate, a hydrogen flow rate or an ozone flow rate.

[0146] Specifically, the gas flow rate input into the nano air pump is determined by the following formula:

[0147] in, Indicates the gas flow rate input to the nano air pump, Indicates the target aeration volume, represents the volume of water, represents the gas dissolution efficiency. The water volume is the volume of irrigation water processed by the nanoair pump each time, and the gas dissolution efficiency is the effective proportion of gas dissolved in the irrigation water. Water volume and gas dissolution efficiency can be configured by those skilled in the art based on actual application scenarios and are not limited here.

[0148] It can be understood that the gas flow rate, target aeration volume, and gas dissolution efficiency in this formula correspond to the same gas (i.e., oxygen, hydrogen, or ozone).

[0149] For example, the controller 102 determines the oxygen flow rate input to the nano-air pump 103 based on the target oxygen aeration volume and controls the control switch 105 to deliver the oxygen flow rate to the nano-air pump. Alternatively, the controller 102 determines the hydrogen flow rate input to the nano-air pump 103 based on the target hydrogen aeration volume and controls the control switch 105 to deliver the hydrogen flow rate to the nano-air pump. Alternatively, the controller 102 determines the ozone flow rate input to the nano-air pump 103 based on the target ozone aeration volume and controls the control switch 105 to deliver the ozone flow rate to the nano-air pump.

[0150] Step S303: controlling the irrigation device to irrigate the crops using the regulated irrigation water.

[0151] Specifically, after the nano air pump 103 generates the regulated irrigation water, the regulated irrigation water is delivered to the irrigation device 104 , and the irrigation device 104 uses the regulated irrigation water to irrigate the crops.

[0152] See also Figure 4 , Figure 4 is a schematic diagram of an irrigation process provided by an embodiment of the present application; like Figure 4 As shown, after filtering impurity particles in the irrigation water, the water purifier 191 transmits the irrigation water to the nano air pump 103; the nano air pump 103 obtains gas from the oxygen gas source 106, the hydrogen gas source 107 or the ozone gas source 108, and exposes the gas to the irrigation water to generate irrigation water containing corresponding nano bubbles; the irrigation water detection device 110 detects the irrigation water containing the corresponding nano bubbles to obtain an irrigation water detection result; the irrigation device 104 uses the irrigation water containing the corresponding nano bubbles to irrigate crops; and the soil detection device 101 detects the soil matrix after irrigation to obtain a rhizosphere detection result.

[0153] The controller 102 obtains the rhizosphere detection results sent by the soil detection device 101 and the irrigation water detection results sent by the irrigation water detection device 110, and determines whether to adjust the air source and / or aeration amount input to the nano-air pump 103. If adjustment is required, the controller 102 switches the air source input to the nano-air pump 103 by controlling the switch 105, and / or controls the ozone flow rate, oxygen flow rate, or hydrogen flow rate input to the nano-air pump 103, thereby controlling the nano-air pump 103 to adjust the content of oxygen nanobubbles, hydrogen nanobubbles, and / or ozone nanobubbles in the irrigation water to generate adjusted irrigation water.

[0154] The irrigation water detection device 110 continues to detect the adjusted irrigation water to obtain new irrigation water detection results; the irrigation device 104 uses the adjusted irrigation water to irrigate crops; the soil detection device 101 continues to detect the soil matrix after irrigation to obtain rhizosphere detection results.

[0155] In an embodiment of the present application, a nanobubble irrigation control method is provided, which includes: obtaining rhizosphere detection results of a soil matrix, wherein a plurality of crops are planted in the soil matrix; based on the rhizosphere detection results, controlling a nano air pump to adjust the content of oxygen nano bubbles, hydrogen nano bubbles, and / or ozone nano bubbles in irrigation water to generate regulated irrigation water; and controlling an irrigation device to use the regulated irrigation water to irrigate the crops.

[0156] By obtaining rhizosphere detection results of the soil matrix, and based on the rhizosphere detection results, controlling the nano air pump to adjust the content of oxygen nano bubbles, hydrogen nano bubbles, and / or ozone nano bubbles in the irrigation water to generate regulated irrigation water, and controlling the irrigation device to use the regulated irrigation water to irrigate crops. On the one hand, the present application can regulate the content of oxygen nano bubbles in the irrigation water according to the actual conditions of the soil matrix to improve the respiratory environment of the crop roots, and regulate the content of ozone nano bubbles in the irrigation water to kill harmful microorganisms in the soil and irrigation water; On the other hand, the present application can regulate the content of oxygen nanobubbles or hydrogen nanobubbles in the irrigation water according to the actual conditions of the soil matrix, thereby regulating the redox potential value of the irrigation water and further optimizing the redox state of the soil.

[0157] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of a controller provided in an embodiment of the present application; like Figure 5 As shown, the controller 102 includes one or more processors 121 and a memory 122. Figure 5 A processor 121 is taken as an example.

[0158] The processor 121 and the memory 122 may be connected via a bus or other means. Figure 5 The bus connection is taken as an example.

[0159] The processor 121 is configured to provide computing and control capabilities to control the controller 102 to perform corresponding tasks, for example, controlling the controller 102 to perform the nanobubble irrigation control method in any of the above method embodiments, wherein the nanobubble irrigation control includes: obtaining rhizosphere detection results of a soil matrix, wherein a plurality of crops are planted in the soil matrix; based on the rhizosphere detection results, controlling a nano-air pump to adjust the content of oxygen nanobubbles, hydrogen nanobubbles, and / or ozone nanobubbles in irrigation water to generate regulated irrigation water; and controlling an irrigation device to irrigate the crops using the regulated irrigation water.

[0160] By obtaining rhizosphere detection results of the soil matrix, and based on the rhizosphere detection results, controlling the nano air pump to adjust the content of oxygen nano bubbles, hydrogen nano bubbles, and / or ozone nano bubbles in the irrigation water to generate regulated irrigation water, and controlling the irrigation device to use the regulated irrigation water to irrigate crops. On the one hand, the present application can regulate the content of oxygen nano bubbles in the irrigation water according to the actual conditions of the soil matrix to improve the respiratory environment of the crop roots, and regulate the content of ozone nano bubbles in the irrigation water to kill harmful microorganisms in the soil and irrigation water; On the other hand, the present application can regulate the content of oxygen nanobubbles or hydrogen nanobubbles in the irrigation water according to the actual conditions of the soil matrix, thereby regulating the redox potential value of the irrigation water and further optimizing the redox state of the soil.

[0161] The processor 121 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), a hardware chip, or any combination thereof; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or any combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0162] Memory 122, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the nanobubble irrigation control method in the embodiments of the present application. Processor 121 can implement the nanobubble irrigation control method in any of the above-described method embodiments by executing the non-transitory software programs, instructions, and modules stored in memory 122. Specifically, memory 122 can include volatile memory (VM), such as random access memory (RAM); memory 902 can also include non-volatile memory (NVM), such as read-only memory (ROM), flash memory, a hard disk drive (HDD), a solid-state drive (SSD), or other non-transitory solid-state storage devices; memory 122 can also include a combination of the aforementioned types of memory.

[0163] The memory 122 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state memory device. In some embodiments, the memory 122 may optionally include a memory remotely located relative to the processor 121, and such remote memory may be connected to the processor 121 via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0164] One or more modules are stored in the memory 122, and when executed by one or more processors 121, perform the nanobubble irrigation control method in any of the above method embodiments, for example, perform the above described Figure 3 The steps shown.

[0165] The present application also provides a computer-readable storage medium, such as a memory device including program code. The program code can be executed by a processor to implement the nanobubble irrigation control method described in the above embodiment. For example, the computer-readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CDROM), a magnetic tape, a floppy disk, or an optical data storage device.

[0166] The present application also provides a computer program product comprising one or more program codes stored in a computer-readable storage medium. A processor of an electronic device reads the program code from the computer-readable storage medium and executes the program code to perform the steps of the nanobubble irrigation control method provided in the above-described embodiment.

[0167] Those skilled in the art will understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or by hardware related to program code, and the program can be stored in a computer-readable storage medium. The above-mentioned storage medium can be a read-only memory, a disk or an optical disk, etc.

[0168] Through the description of the above embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a general hardware platform, or of course, hardware. Those skilled in the art will understand that all or part of the processes in the above-described embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a computer-readable storage medium, and when executed, the program can include the processes of the above-described embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0169] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Based on the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present application as mentioned above. For the sake of simplicity, they are not provided in detail. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A nanobubble irrigation control method, characterized in that: include: obtaining rhizosphere detection results of a soil matrix, wherein a plurality of crops are planted in the soil matrix; Based on the rhizosphere detection result, controlling the nano air pump to adjust the content of oxygen nano bubbles, hydrogen nano bubbles and / or ozone nano bubbles in the irrigation water to generate adjusted irrigation water; The irrigation device is controlled to irrigate the crops using the regulated irrigation water.

2. The method according to claim 1, characterized in that The method is applied to a controller, which is connected to a control switch; The control switch is connected to the nano air pump and is used to switch different gas sources input into the nano air pump, wherein the gas source includes an ozone gas source, an oxygen gas source or a hydrogen gas source; The nano air pump is used to aerate the irrigation water with oxygen to generate the irrigation water containing oxygen nanobubbles, or to aerate the irrigation water with hydrogen to generate the irrigation water containing hydrogen nanobubbles, or to aerate the irrigation water with ozone to generate the irrigation water containing ozone nanobubbles; The control switch is also used to control the ozone flow, oxygen flow or hydrogen flow input into the nano air pump, thereby changing the ozone aeration amount, oxygen aeration amount or hydrogen aeration amount of the nano air pump.

3. The method according to claim 2, characterized in that The rhizosphere test results include soil oxygen content and soil ORP value; The method of controlling the nano air pump to adjust the content of oxygen nano bubbles in the irrigation water based on the rhizosphere detection result includes: When the soil oxygen content is less than the first dissolved oxygen concentration, or the soil ORP value is less than the first ORP value, controlling the nano air pump to increase the oxygen aeration amount to increase the content of oxygen nano bubbles in the irrigation water; When the soil oxygen content is greater than or equal to the first dissolved oxygen concentration, the soil oxygen content is less than or equal to the second dissolved oxygen concentration, the soil ORP value is greater than or equal to the first ORP value, and the soil ORP value is less than or equal to the second ORP value, controlling the oxygen aeration amount of the nano air pump to remain unchanged so as to maintain the content of oxygen nano bubbles in the irrigation water unchanged; When the soil oxygen content is greater than the second dissolved oxygen concentration, controlling the nano air pump to reduce the oxygen aeration amount to reduce the content of oxygen nano bubbles in the irrigation water; The first dissolved oxygen concentration is lower than the second dissolved oxygen concentration, and the first ORP value is lower than the second ORP value.

4. The method according to claim 3, characterized in that In the case of controlling the nano air pump to increase or decrease the oxygen aeration amount, the method further includes: Obtain the actual dissolved oxygen concentration of irrigation water currently irrigating crops in the soil matrix; determining a target dissolved oxygen concentration based on the actual dissolved oxygen concentration and a target oxygen content, wherein the target oxygen content is the oxygen content that the soil matrix should reach when the crop is growing vigorously, and the target dissolved oxygen concentration is the dissolved oxygen concentration of the adjusted irrigation water; Determining a target oxygen aeration amount based on the target dissolved oxygen concentration, wherein the target oxygen aeration amount is the oxygen aeration amount achieved by the nano air pump after increasing or decreasing the oxygen aeration amount; The target dissolved oxygen concentration is determined by the following formula: in, Indicates the target dissolved oxygen concentration, Indicates the target oxygen content, represents the first deviation coefficient, Indicates the actual dissolved oxygen concentration; The target oxygen aeration rate is determined by the following formula: in, Indicates the target oxygen aeration volume, Indicates the oxygen aeration amount corresponding to the irrigation water currently irrigating crops in the soil matrix, represents the oxygen regulation coefficient, Indicates the target dissolved oxygen concentration, Indicates the actual dissolved oxygen concentration. Indicates the correction factor.

5. The method according to claim 2, characterized in that The rhizosphere test results include soil ORP value; The method of controlling the nano air pump to adjust the content of hydrogen nano bubbles in the irrigation water based on the rhizosphere detection result includes: When the soil ORP value is greater than or equal to the first ORP value and the soil ORP value is less than or equal to the second ORP value, controlling the hydrogen aeration amount of the nano air pump to remain unchanged so as to maintain the content of hydrogen nano bubbles in the irrigation water unchanged; When the soil ORP value is greater than a second ORP value, controlling the nano air pump to increase the hydrogen aeration amount to increase the content of hydrogen nano bubbles in the irrigation water; Wherein, the first ORP value is less than the second ORP value.

6. The method according to claim 5, characterized in that In the case of controlling the nano air pump to increase the hydrogen aeration amount, the method further includes: Obtain the actual ORP value of the irrigation water currently irrigating the crops in the soil matrix; determining a target ORP value based on the actual ORP value and a third ORP value, wherein the third ORP value is the ORP value that the soil matrix should reach when the crop is growing vigorously, and the target ORP value is the ORP value of the adjusted irrigation water; Determining a target hydrogen aeration amount based on the target ORP value and the actual ORP value, wherein the target hydrogen aeration amount is the hydrogen aeration amount achieved by the nano air pump after increasing the hydrogen aeration amount; The target ORP value is determined by the following formula: in, Indicates the target ORP value, Indicates the third ORP value, represents the second coefficient of deviation, Indicates the actual ORP value; The target hydrogen aeration rate is determined by the following formula: in, Indicates the target hydrogen aeration volume, represents the hydrogen regulation coefficient, Indicates the actual ORP value, Indicates the target ORP value.

7. The method according to claim 2, characterized in that The rhizosphere test results include soil ozone content; The method of controlling the nano air pump to adjust the content of ozone nano bubbles in the irrigation water based on the rhizosphere detection result includes: When the soil ozone content is less than a first ozone concentration, controlling the nano air pump to increase the ozone aeration amount to increase the content of ozone nano bubbles in the irrigation water; When the soil ozone content is greater than or equal to the first ozone concentration and the soil ozone content is less than or equal to the second ozone concentration, controlling the ozone aeration volume of the nano air pump to remain unchanged so as to maintain the content of ozone nano bubbles in the irrigation water unchanged; When the soil ozone content is greater than a second ozone concentration, controlling the nano air pump to reduce the ozone aeration amount to reduce the content of ozone nano bubbles in the irrigation water; Wherein, the first ozone concentration is less than the second ozone concentration.

8. The method according to claim 7, characterized in that In the case of controlling the nano air pump to increase or decrease the ozone aeration amount, the method further includes: Obtain the actual ozone concentration of irrigation water currently irrigating crops in the soil matrix; Determining a target ozone concentration based on the actual ozone concentration and the target ozone content, wherein the target ozone content is the ozone content that should be achieved when the soil matrix meets the crop disinfection requirements, and the target ozone concentration is the ozone concentration of the adjusted irrigation water; Determining a target ozone aeration amount based on the target ozone concentration and the actual ozone concentration, wherein the target ozone aeration amount is the ozone aeration amount achieved by the nano air pump after increasing the ozone aeration amount; The target ozone concentration is determined by the following formula: in, Indicates the target ozone concentration, Indicates the target ozone content, represents the third coefficient of deviation, Indicates actual ozone concentration; Among them, the target ozone aeration volume is determined by the following formula: in, Indicates the target ozone aeration volume, Indicates the amount of ozone aeration corresponding to the irrigation water currently used to irrigate crops in the soil matrix, represents the ozone regulation coefficient, Indicates the target ozone concentration, Indicates the actual ozone concentration.

9. A controller, characterized in that: include: at least one processor, and a memory communicatively coupled to the at least one processor, wherein: The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 8.

10. An irrigation system, characterized in that: include: The controller according to claim 9; A soil detection device, connected to the controller, for detecting the soil matrix to obtain a rhizosphere detection result, and sending the rhizosphere detection result to the controller; a nano air pump connected to the controller and configured to generate irrigation water containing oxygen nano bubbles, hydrogen nano bubbles, or ozone nano bubbles; An irrigation device is connected to the nano air pump and is used to irrigate the crops using the regulated irrigation water.

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