Desalination detection equipment and detection method for low-lying saline-alkali soil

Abstract

The invention discloses desalting detection equipment and detection method for low-lying saline-alkali soil. The desalting detection equipment for the low-lying saline-alkali soil comprises a blocking ditch formed between any adjacent highland and low-lying land, a migration permeable pipe pre-buried and laid in the width direction of the low-lying land, a drip irrigation pipe laid in the width direction of the highland, and a desalting detection pump set assembled in the blocking ditch and connected with the migration permeable pipe and the drip irrigation pipe. According to the method, the low-lying saline-alkali soil is treated in a targeted mode, the treatment effect is remarkable, waste of water resources is reduced, the treatment effect is comprehensively detected, and the method is suitable for improvement of large-area saline-alkali soil. In addition, the invention further provides a desalting detection method for the low-lying saline-alkali soil, by means of the method, the treatment effect of the low-lying saline-alkali soil can be systematically detected, the treatment standard is met, balanced water supplementing is achieved, and detection is wider and more comprehensive.

Description

Technical field:

[0001] The invention relates to the technical field of saline-alkali land treatment and detection, and in particular to desalination detection equipment and a detection method for low-lying saline-alkali land. Background technology:

[0002] Soil salinization is a global problem that plagues agricultural development. The formation of saline-alkali land is due to the accumulation of a large amount of soluble salts such as sodium chloride and sodium carbonate, especially in the 0-20cm layer of the soil surface, which seriously affects the growth of crops. In particular, most of Ningxia is saline-alkali land, which cannot be cultivated directly. It requires large amounts of water irrigation to dissolve the soluble salt and alkali to 50-70cm in the soil before it can be cultivated.

[0003] Large-volume freshwater irrigation is a simple and effective measure to reduce the pH value of saline-alkali land. The main purpose of this practice is to make the soil contain a large amount of water for leaching and desalination. Ningxia is short of water resources. The central and northern parts rely on the Yellow River water. In addition, the geographical properties of high and low-lying areas are prominent, resulting in a large amount of land being wasted.

[0004] In the existing desalination detection of saline-alkali land, special tools are often used for sampling and processing. However, due to the undulating geographical features of high and low lying areas, there are great difficulties in the treatment process, and a large number of samples are collected; however, in the presence of highlands and depressions, the difficulty in treatment and the large detection errors after sampling are significantly prominent; the low-lying areas have a large water storage capacity and poor permeability; the highlands cannot store water well and then infiltrate into the low-lying areas, affecting the overall treatment and unable to meet the requirements of freshwater elution; due to geographical differences, sampling desalination detection cannot achieve comprehensive desalination detection of low-lying saline-alkali land, resulting in great limitations in the treatment of saline-alkali land. Summary of the invention:

[0005] In view of this, it is necessary to design a desalination detection equipment and detection method for low-lying saline-alkali land that can overcome the above problems, meet the management requirements, and achieve efficient and comprehensive detection performance.

[0006] In a first aspect, the present application provides a desalination detection device for low-lying saline-alkali land, comprising: a blocking ditch opened between any adjacent highland and low-lying land, a transport permeable pipe pre-buried and laid along the width direction of the low-lying land, a drip irrigation pipe pre-buried and laid along the width direction of the highland, and a desalination detection pump group installed inside the blocking ditch and connected to the transport permeable pipe and the drip irrigation pipe;

[0007] The blocking ditch comprises: a long guard plate attached to the side slope of the highland, a short guard plate attached to the side slope of the lowland, and a reinforcing partition plate vertically mounted between the long guard plate and the short guard plate; the long guard plate, the short guard plate and the reinforcing partition plate are all connected with a photovoltaic power generation panel for covering the blocking ditch through an installation assembly frame;

[0008] The desalination detection pump group includes: a rinse water return chamber connected to the transport permeable pipe, a water suction pump connected to the rinse water return chamber, and a solenoid valve pipe connected to the drip irrigation pipe; wherein,

[0009] The interior of the rinse water reflux chamber is equipped with a multi-parameter water quality detector, and the bottom of the rinse water reflux chamber is equipped with a solenoid valve switch; the pumping end of the water suction pump is connected to a three-way pipeline, the first free end of the three-way pipeline is connected to the solenoid valve pipe, and the second free end of the three-way pipeline is connected to the rinse water reflux chamber;

[0010] The desalination detection equipment for low-lying saline-alkali land also includes a central control system. After receiving the numerical information of the multi-parameter water quality detector, the central control system controls the corresponding solenoid valve tube and solenoid valve switch to open or close.

[0011] Preferably, the blocking ditch is connected to a desalination confluence well at the lowest point along the water flow slope.

[0012] Preferably, the rinse water return chamber is connected to a plurality of the transport and permeable pipes, and the solenoid valve pipe is connected to a plurality of the drip irrigation pipes.

[0013] Preferably, the laying density of the transport and permeable pipes is greater than the laying density of the drip irrigation pipes.

[0014] Preferably, the number of the transport and permeable pipes connected to the same group of the desalination detection pump groups is greater than the number of the drip irrigation pipes connected to the same group of the desalination detection pump groups.

[0015] Preferably, the three-way pipeline passes through the reinforced partition and is fixedly mounted on the reinforced partition.

[0016] Preferably, the drip irrigation pipe and the transport permeable pipe both include: an inner-porous pipe, an elastic water-absorbing layer wrapping the inner-porous pipe, and a dense-pore steel wire mesh wrapping the elastic water-absorbing layer.

[0017] In the present invention, by laying the transport permeable pipe, water resources can be absorbed when less fresh water is used for irrigation in low-lying areas, and the low-lying areas can be periodically treated by leaching; the water medium value is obtained in real time by a multi-parameter water quality detector, and after the irrigation water value of desalination is met, drip irrigation pipes can be used to periodically treat the highlands with salt and alkali, so as to balance the use of water resources and ensure a high detection standard.

[0018] In a second aspect, a method for detecting desalination of low-lying saline-alkali land comprises a desalination detection device for low-lying saline-alkali land as described above, and the method comprises the following steps:

[0019] S1, selecting a first target site, a second target site, and a third target site for leveling and deep plowing;

[0020] S2, digging blocking trenches on the slopes adjacent to the second target site and the first target site, and on the slopes adjacent to the third target site and the first target site, and laying long guard plates, short guard plates and reinforced partitions accordingly;

[0021] S3, pre-burying the drip irrigation pipe in the first target site and extending it to the inside of the two blocking ditches, and pre-burying the transport permeable pipe in the second target site and the third target site and extending it to the inside of the corresponding blocking ditches;

[0022] S4. Install a desalination detection pump set inside the blocking ditch;

[0023] ① Select a large-diameter pipe of equal length as the rinsing water reflux chamber, install a multi-parameter water quality detector inside the rinsing water reflux chamber, install a solenoid valve switch at the bottom of the rinsing water reflux chamber, and connect multiple transport and permeable pipes to the rinsing water reflux chamber;

[0024] ② Select a tube body with the same length as the rinsing water return chamber as the solenoid valve tube, and the solenoid valve tube is connected to multiple drip irrigation tubes;

[0025] ③Install the water suction pump, the water suction end of the water suction pump extends to the rinsing water return chamber, and the water pump end of the water suction pump is connected to the three-way pipeline;

[0026] S5, fresh water washing the second and third destinations;

[0027] S6, desalting test;

[0028] (1) After the second and third target areas enter the transport permeable pipe under the fresh water elution state and flow into the corresponding elution water return chamber, the multi-parameter water quality detector detects whether the water medium in the elution water return chamber is within the set range;

[0029] (2) When the central control system receives the multi-parameter water quality detector to detect that the water medium in the rinsing water return chamber is higher than the set range, the solenoid valve switch is controlled to open;

[0030] ⑶ When the central control system receives the multi-parameter water quality detector to detect that the water medium in the rinsing water return chamber is within the set range, the solenoid valve switch is controlled to be closed, the water suction pump is controlled to be turned on, and the solenoid valve pipe is controlled to be opened;

[0031] S7. After a drip irrigation desalination cycle is formed for the target site, the backflow seepage water from the drip irrigation pipe enters the rinsing water return chamber and continues to be detected by the multi-parameter water quality detector until the water medium is within the set range, completing the desalination detection of the first target site, the second target site and the third target site.

[0032] Preferably, the first destination is a highland;

[0033] The second target location and the second target location are both low-lying areas.

[0034] Preferably, the multi-parameter water quality detector detects the pH value and soluble salt content of the water medium in the rinse water return chamber; wherein,

[0035] The setting range of the pH value is 5.0 to 7.0;

[0036] The setting range of the soluble salt is 1.7 g / L to 5 g / L.

[0037] The above method ensures full utilization of water resources in low-lying areas, and the leaching and desalination effect is significant; the water resources after initial leaching and desalination are drained and discharged for reprocessing during the recycling process to reduce the waste of water resources; the water resources that meet the leaching and desalination effect are pumped into the highlands as irrigation water for drip irrigation desalination, and the desalination value is tested at all times to meet strict governance requirements. The detection methods are comprehensive and the detection standards are reliable. Description of the drawings:

[0038] Attached Figure 1 It is a structural schematic diagram of a desalination detection device for low-lying saline-alkali land provided by the present invention;

[0039] Attached Figure 2 It is a structural schematic diagram of the desalination detection pump group provided by the present invention;

[0040] Attached Figure 3 It is a structural schematic diagram of the drip irrigation pipe provided by the present invention;

[0041] Attached Figure 4 It is a flow chart of the desalination detection method for low-lying saline-alkali land provided by the present invention.

[0042] In the figure:

[0043] Drip irrigation pipe-100, dense mesh steel wire mesh-110, elastic water absorption layer-120, inner hole pipe-130;

[0044] Transport permeable pipe - 200;

[0045] Desalination detection pump group-300, long guard plate-301, short guard plate-302, reinforced partition-303, installation group frame-304, photovoltaic power generation panel-305, elution water return chamber-306, multi-parameter water quality detector-307, solenoid valve switch-308, water suction pump-309, three-way pipeline-310, solenoid valve pipe-311;

[0046] Central control system-400. Specific implementation method:

[0047] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0048] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components.

[0049] Words such as "include" or "comprises" and the like mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0050] The technical carriers involved in the embodiments of this specification may include, for example, Near Field Communication (NFC), WIFI, 3G / 4G / 5G, etc.

[0051] To facilitate understanding of the desalination detection equipment and detection method for low-lying saline-alkali land provided in the embodiments of the present application, first explain its application scenario. In the existing desalination detection of saline-alkali land, special tools are often used for sampling and processing. However, for the undulating geographical features of high and low lying, there are great difficulties in the governance process, and the sampling samples are collected in large quantities; however, in the case of highlands and depressions, the difficulty in governance and the large detection errors after sampling are significantly prominent; low-lying land has a large amount of water storage and poor permeability; highlands cannot store water well and then seep into low-lying land, affecting the overall governance and unable to meet the requirements of freshwater elution; due to geographical differences, sampling desalination detection cannot achieve comprehensive desalination detection of low-lying saline-alkali land, resulting in greater limitations in the governance of saline-alkali land. In view of this, the desalination detection equipment and detection method for low-lying saline-alkali land of the present application meet the governance requirements and achieve efficient and comprehensive detection performance.

[0052] refer to Figure 1 , Figure 1 A structural schematic diagram of a desalination detection device for low-lying saline-alkali land is shown; the desalination detection device for low-lying saline-alkali land in the present application combines management and detection, and meets the desalination management effect of saline-alkali land under periodic or continuous management conditions. When combined with desalination detection, the management process data can be obtained in real time, and the waste of water resources can be avoided in a timely and decisive manner, and the targeted management is more effective.

[0053] The desalination detection equipment for low-lying saline-alkali land includes: a blocking ditch opened between any adjacent high ground and low-lying land; the blocking ditch is set at the connecting section of the high ground and the low-lying land, and the high ground and the low-lying land are mechanically leveled in advance to ensure that they are in a level state, which is convenient for standardized and simplified construction operations in the later stage.

[0054] The highlands and low-lying areas in this application are deep-ploughed after the blocking ditches are laid, with a depth of 25cm to 35cm. The deep plowing can turn the surface soil with high salt and alkali content in the saline-alkali land into the ground, and the desalination effect can be guaranteed through irrigation and leaching. In addition, in the present application, there are pre-buried transport permeable pipes 200 laid along the width direction of the low-lying land, drip irrigation pipes 100 laid along the width direction of the highland, and a desalination detection pump group 300 installed inside the blocking ditch and connected to the transport permeable pipes 200 and the drip irrigation pipes 100; of course, it needs to be specifically explained that after the geological survey of the low-lying land in the present application, when there is an impermeable layer in the low-lying land, drilling, aeration and other methods can be used to decompose the impermeable layer, and the transport permeable pipes 200 can be pre-buried; the low-lying land in the present application adopts fresh water irrigation for leaching and desalination, the aquifer in the low-lying land is relatively shallow, and leaching and desalination can be achieved by using a small amount of fresh water irrigation; the drip irrigation pipes 100 pre-buried in the highland can effectively carry out drip irrigation desalination, and the laying density of the transport permeable pipes 200 is greater than the laying density of the drip irrigation pipes 100.

[0055] The water resources of elution and desalination can be reused after being collected by the transport permeable pipe 200. The lowest point of the water flow slope along the blocking ditch is connected to the desalination confluence well. By collecting the water resources after elution and desalination, the water resources are treated to remove the salt to meet the irrigation needs, and then drip-irrigated to the highlands for desalination treatment, the use of water resources is balanced and waste is reduced.

[0056] Combination Figure 2 As shown in the figure, when the blocking ditch is specifically set up, the blocking ditch includes: a long guard plate 301 attached to the slope of the high ground, a short guard plate 302 attached to the slope of the low-lying land, and a reinforcing partition 303 vertically assembled between the long guard plate 301 and the short guard plate 302; the long guard plate 301, the short guard plate 302 and the reinforcing partition 303 are all connected with a photovoltaic power generation panel 305 for covering the blocking ditch through an installation assembly frame 304; the long guard plate 301 and the short guard plate 302 in the present application are both spliced ​​with prefabricated panels, and the long guard plate 301 and the short guard plate 302 are in an outward-facing shape, a concrete bottom is cast at the bottom of the blocking ditch, and an installation groove for installing the reinforcing partition 303 is reserved on the concrete bottom.

[0057] At the same time, in this application, in response to the large-scale occurrence of the phenomenon of existing photovoltaic panels 305 occupying arable land, combined with the actual situation in the local area, covering photovoltaic panels 305 are installed on the blocking ditch, and the electricity generated by the photovoltaic panels 305 is directly used in this technology or sold in exchange for certain economic benefits; by integrating highlands and low-lying land, leaving a larger planting area for improved arable land, and utilizing non-planting areas to install photovoltaic panels 305, the purpose of increasing production and efficiency is greatly achieved.

[0058] The desalination detection pump group 300 in the present application includes: a rinse water return chamber 306 connected to the transport permeable pipe 200, a water suction pump 309 connected to the rinse water return chamber 306, and a solenoid valve pipe 311 connected to the drip irrigation pipe 100; wherein, the rinse water return chamber 306 in the present application is installed between the reinforced partition 303 and the short guard plate 302, and the installation performance is stable. In addition, the rinse return chamber is made of a pipe body with a diameter greater than 380mm, which is evenly divided into sections and sealed at both ends; the rinse water return chamber 306 is equipped with a multi-parameter water quality detector 307 inside, which is used to detect the pH value of the water medium, the soluble salt content and many other values, and provide real-time reference for the value changes generated during the freshwater irrigation process in low-lying areas.

[0059] In addition, the rinse water return chamber 306 is connected to a plurality of transport permeable pipes 200, and the solenoid valve pipe 311 is connected to a plurality of drip irrigation pipes 100. The length of the solenoid valve pipe 311 is the same as the length of the rinse water return chamber 306; the number of transport permeable pipes 200 connected to the same set of desalination detection pump groups 300 is greater than the number of drip irrigation pipes 100 connected. Thus, a high water permeability is ensured, which can meet the requirement of sufficient water volume pumped into the plurality of drip irrigation pipes 100 by the water suction pump 309.

[0060] Combination Figure 2 and Figure 3 As shown in the figure, the drip irrigation pipe 100 and the transport permeable pipe 200 in the present application have the same structure, and both the drip irrigation pipe 100 and the transport permeable pipe 200 include: an inner hole pipe 130, an elastic water absorption layer 120 wrapping the inner hole pipe 130, and a dense mesh 110 wrapping the elastic water absorption layer 120. The elastic water absorption layer 120 is made of a material such as sponge to ensure high water permeability and water absorption performance.

[0061] At the same time, a solenoid valve switch 308 is installed at the bottom of the rinsing reflux chamber; the water pumping end of the water suction pump 309 is connected to a three-way pipe 310, the first free end of the three-way pipe 310 is connected to the solenoid valve pipe 311, and the second free end of the three-way pipe 310 is connected to the rinsing water reflux chamber 306; the three-way pipe 310 passes through the reinforced partition 303 and is fixedly assembled on the reinforced partition 303.

[0062] In addition, the desalination detection equipment for low-lying saline-alkali land also includes a central control system 400. After receiving the numerical information of the multi-parameter water quality detector 307, the central control system 400 controls the corresponding solenoid valve tube 311 and the solenoid valve switch 308 to open or close.

[0063] In the present invention, by laying the transport permeable pipe 200, water resources can be absorbed when less fresh water is used for irrigation in low-lying areas, and low-lying areas can be periodically treated by leaching; the water medium value is obtained in real time by the multi-parameter water quality detector 307, and after the desalinated irrigation water value is met, the drip irrigation pipe 100 can be used to periodically treat the high ground with salt and alkali, so as to balance the use of water resources and ensure a high detection standard.

[0064] Combination Figure 1 and Figure 4 As shown in , in addition, the present application also provides a desalination detection method for low-lying saline-alkali land, including a desalination detection device for low-lying saline-alkali land as described above to detect the desalination detection method for low-lying saline-alkali land, comprising the following steps:

[0065] S1. Select the first target site, the second target site, and the third target site for leveling and deep plowing; the first target site, the second target site, and the third target site are given as examples to facilitate understanding of the present application. The first target site is a highland, and the second target site and the third target site are low-lying lands. The elution water resources of the two low-lying lands are drip-irrigated to the highland in a state of sufficient water resources under the action of a water suction pump, thereby achieving the purpose of balancing water resources. Of course, there are a fourth target site, a fifth target site, etc. in large areas of high and low-lying lands.

[0066] S2. Blocking ditches are dug on the slopes adjacent to the second target site and the first target site, and on the slopes adjacent to the third target site and the first target site, and long guard plates, short guard plates and reinforced partitions are laid accordingly; the blocking ditches are installed in a simple construction method, and can be used for a long time to complete multi-year irrigation and multi-year periodic prevention of saline-alkali land regeneration.

[0067] S3. Pre-bury drip irrigation pipes in the first target site and extend them to the inside of the two blocking ditches. Pre-bury transport and permeable pipes in the second and third target sites and extend them to the inside of the corresponding blocking ditches. Lay drip irrigation pipes and transport and permeable pipes, design a reasonable distribution based on geological surveys, and make the transport and permeable pipes have higher water supply permeability.

[0068] S4. Install a desalination detection pump set inside the blocking ditch.

[0069] ① Select a large-diameter pipe of equal length as the rinsing water reflux chamber, install a multi-parameter water quality detector inside the rinsing water reflux chamber, install a solenoid valve switch at the bottom of the rinsing water reflux chamber, and connect multiple transport and permeable pipes to the rinsing water reflux chamber;

[0070] ② Select a tube body with the same length as the rinsing water return chamber as the solenoid valve tube, and the solenoid valve tube is connected to multiple drip irrigation tubes;

[0071] ③Install a water suction pump, the suction end of the water suction pump extends to the rinsing water return chamber, and the pump end of the water suction pump is connected to the three-way pipe; obtain the water medium value through a multi-parameter water quality detector, and when the irrigation demand is not met, directly discharge it after opening the solenoid valve switch, and collect it in the desalination confluence well through the blocking ditch for desalination treatment. The treatment method adopts methods such as adding acidic substances in the delayed confluence well to form an irrigable water source after treatment.

[0072] S5. Fresh water elution for the second and third destinations; desalination of low-lying areas is achieved by elution with a relatively small amount of fresh water. The source of fresh water may be water from the Yellow River, deep wells, or fresh water collected from the previous desalination cycle and concentrated in the desalination confluence well.

[0073] S6. Desalting test.

[0074] (1) After the second and third target areas enter the transport permeable pipe under the fresh water elution state and flow into the corresponding elution water return chamber, the multi-parameter water quality detector detects whether the water medium in the elution water return chamber is within the set range;

[0075] (2) When the central control system receives the multi-parameter water quality detector to detect that the water medium in the rinsing water return chamber is higher than the set range, the solenoid valve switch is controlled to open;

[0076] ⑶ When the central control system receives the multi-parameter water quality detector to detect that the water medium in the rinsing water return chamber is within the set range, the solenoid valve switch is controlled to be closed, the water suction pump is controlled to be turned on, and the solenoid valve tube is controlled to be opened; the multi-parameter water quality detector detects the pH value and soluble salt of the water medium in the rinsing water return chamber; wherein, the setting range of the pH value is 5.0~7.0; the setting range of the soluble salt is 1.7g / L~5g / L.

[0077] S7. After a drip irrigation desalination cycle is formed for the target site, the backflow seepage water from the drip irrigation pipe enters the rinsing water return chamber and continues to be detected by the multi-parameter water quality detector until the water medium is within the set range, completing the desalination detection of the first target site, the second target site and the third target site.

[0078] In the present invention, the above method is adopted to ensure full utilization of water resources in low-lying areas, and the elution desalination effect is remarkable; the water resources after preliminary elution desalination are drained and discharged for reprocessing during the recovery process, thereby reducing the waste of water resources; the water resources that meet the elution desalination effect are pumped into highlands as irrigation water for drip irrigation desalination, and the desalination value is constantly tested to meet strict governance requirements, with comprehensive coverage of the detection method and reliable detection standards.

[0079] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. In line with the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as described above, which are not provided in detail for the sake of simplicity.

[0080] In addition, to simplify the description and discussion, and in order not to obscure one or more embodiments of the present specification, known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided figures. In addition, the device may be shown in the form of a block diagram so as to avoid obscuring one or more embodiments of the present specification, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which one or more embodiments of the present specification will be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details (e.g., circuits) are set forth to describe exemplary embodiments of the present disclosure, it is apparent to those skilled in the art that one or more embodiments of the present specification may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0081] While the disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0082] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

Claims

1. A desalination detection device for low-lying saline-alkali land, comprising a blocking ditch opened between any adjacent highland and low-lying land, a transport permeable pipe pre-buried and laid along the width direction of the low-lying land, a drip irrigation pipe pre-buried and laid along the width direction of the highland, and a desalination detection pump group installed inside the blocking ditch and connected to the transport permeable pipe and the drip irrigation pipe; characterized in that: The blocking ditch comprises: a long guard plate attached to the side slope of the highland, a short guard plate attached to the side slope of the lowland, and a reinforcing partition plate vertically mounted between the long guard plate and the short guard plate; the long guard plate, the short guard plate and the reinforcing partition plate are all connected with a photovoltaic power generation panel for covering the blocking ditch through an installation assembly frame; The desalination detection pump group includes: a rinse water return chamber connected to the transport permeable pipe, a water suction pump connected to the rinse water return chamber, and a solenoid valve pipe connected to the drip irrigation pipe; wherein, The interior of the rinse water reflux chamber is equipped with a multi-parameter water quality detector, and the bottom of the rinse water reflux chamber is equipped with a solenoid valve switch; the pumping end of the water suction pump is connected to a three-way pipeline, the first free end of the three-way pipeline is connected to the solenoid valve pipe, and the second free end of the three-way pipeline is connected to the rinse water reflux chamber; The desalination detection equipment for low-lying saline-alkali land also includes a central control system. After receiving the numerical information of the multi-parameter water quality detector, the central control system controls the corresponding solenoid valve tube and solenoid valve switch to open or close.

2. The desalination detection device for low-lying saline-alkali land according to claim 1, characterized in that: The blocking ditch is connected to a desalination confluence well at the lowest point along the water flow slope.

3. The desalination detection device for low-lying saline-alkali land according to claim 1, characterized in that: The rinse water return chamber is connected to a plurality of the transport and permeable pipes, and the solenoid valve pipe is connected to a plurality of the drip irrigation pipes.

4. The desalination detection device for low-lying saline-alkali land according to claim 3, characterized in that: The laying density of the transport and permeable pipes is greater than the laying density of the drip irrigation pipes.

5. The desalination detection device for low-lying saline-alkali land according to claim 4, characterized in that: The number of the transport and permeable pipes connected to the same group of the desalination detection pump groups is greater than the number of the drip irrigation pipes connected to the same group of the desalination detection pump groups.

6. The desalination detection device for low-lying saline-alkali land according to claim 1, characterized in that: The three-way pipeline passes through the reinforced baffle and is fixedly mounted on the reinforced baffle.

7. The desalination detection device for low-lying saline-alkali land according to claim 1, characterized in that: The drip irrigation pipe and the transport permeable pipe both include an inner-hole pipe, an elastic water-absorbing layer wrapping the inner-hole pipe, and a dense-hole steel wire mesh wrapping the elastic water-absorbing layer.

8. A desalination detection method for low-lying saline-alkali land, characterized in that: A method for detecting desalination of low-lying saline-alkali land by a desalination detection device for low-lying saline-alkali land as claimed in any one of claims 1 to 7, comprising the following steps: Step 1: Select the first target site, the second target site, and the third target site for leveling and deep plowing; Step 2: dig blocking trenches on the slopes adjacent to the second target site and the first target site, and on the slopes adjacent to the third target site and the first target site, and lay long guard plates, short guard plates and reinforced partitions accordingly; Step 3: pre-burying a drip irrigation pipe in the first target site and extending it to the inside of the two blocking ditches, and pre-burying a transport permeable pipe in the second target site and the third target site and extending it to the inside of the corresponding blocking ditches; Step 4: Install the desalination detection pump set inside the blocking ditch; ① Select a large-diameter pipe of equal length as the rinsing water reflux chamber, install a multi-parameter water quality detector inside the rinsing water reflux chamber, install a solenoid valve switch at the bottom of the rinsing water reflux chamber, and connect multiple transport and permeable pipes to the rinsing water reflux chamber; ② Select a tube body with the same length as the rinsing water return chamber as the solenoid valve tube, and the solenoid valve tube is connected to multiple drip irrigation tubes; ③Install the water suction pump, the water suction end of the water suction pump extends to the rinsing water return chamber, and the water pump end of the water suction pump is connected to the three-way pipeline; Step 5: rinse the second target site and the third target site with fresh water; Step 6: Desalting test; (1) After the second and third target areas enter the transport permeable pipe under the fresh water elution state and flow into the corresponding elution water return chamber, the multi-parameter water quality detector detects whether the water medium in the elution water return chamber is within the set range; (2) When the central control system receives the multi-parameter water quality detector to detect that the water medium in the rinsing water return chamber is higher than the set range, the solenoid valve switch is controlled to open; ⑶ When the central control system receives the multi-parameter water quality detector to detect that the water medium in the rinsing water return chamber is within the set range, the solenoid valve switch is controlled to be closed, the water suction pump is controlled to be turned on, and the solenoid valve pipe is controlled to be opened; Step 7: After a drip irrigation desalination cycle is formed for the first target site, the backflow seepage water from the drip irrigation pipe enters the rinsing water return chamber and continues to be detected by the multi-parameter water quality detector until the water medium is within the set range, completing the desalination detection of the first target site, the second target site and the third target site.

9. The desalination detection method for low-lying saline-alkali land according to claim 8, characterized in that: The first target location is a high ground; The second target location and the second target location are both low-lying areas.

10. The desalination detection method for low-lying saline-alkali land according to claim 8, characterized in that: The multi-parameter water quality detector detects the pH value and dissolved salt content of the water medium in the rinse water return chamber; wherein the setting range of the pH value is 5.0 to 7.0; The setting range of the soluble salt is 1.7 g / L to 5 g / L.

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