Underground pipe drainage system suitable for pollution reduction and yield increase of coastal farmland under One Health idea

Abstract

The invention discloses an underground pipe drainage system suitable for pollution reduction and yield increase of coastal farmland under the One Health concept, and relates to the technical field of agricultural drainage, the underground pipe drainage system comprises a soil information monitoring module, a meteorological data access module, an intelligent decision module, a multi-layer composite filter material structure and a drainage pipe network system; the method breaks through the treatment bottleneck of dry season salt return and rainy season waterlogging of coastal farmland salinized soil, establishes a soil salt-water-fertilizer coordinated regulation model, accurately matches the crop water demand law, realizes the double targets of water and salt discharge and non-point source pollution control under the One Health idea, not only reduces the soil improvement cost, but also prolongs the service life of the concealed conduit, and improves the soil quality. And meanwhile, the total nitrogen load of agricultural recession is reduced, the content of organic matters in soil is increased, the conductivity of underground water is reduced, the cooperation of saline soil improvement, resource conservation and ecological protection is realized, and a technical support is provided for sustainable development of coastal agriculture.

Description

Technical Field

[0001] This invention relates to the field of agricultural drainage technology, and in particular to a concealed pipe drainage system suitable for reducing pollution and increasing yields in coastal farmland under the One Health concept. Background Technology

[0002] Farmland, also known as arable land, refers to land suitable for growing crops in geography. Coastal farmland, distributed along the coast and surrounding intertidal zones and alluvial plains, bears the heavy responsibility of ensuring regional food security and also exhibits unique ecological characteristics due to its proximity to the ocean. Its soil is often affected by seawater infiltration, resulting in high natural salinity. Coupled with tidal fluctuations and frequent typhoons and rainstorms, it is prone to salinization and waterlogging problems. In some areas, freshwater resources are scarce, and irrigation relies on limited groundwater or diverted water, restricting production stability.

[0003] Underground drainage technology, as a highly efficient and environmentally friendly groundwater management technique, is widely used in agriculture, urban flood control and drainage, and wetland protection. This technology effectively collects and removes excess water from the soil by laying specialized drainage pipe systems underground, thereby regulating soil moisture, promoting crop growth, reducing waterlogging disasters, and maintaining ecological balance. Underground drainage systems for coastal farmland aim to solve problems such as soil salinization, waterlogging, and agricultural non-point source pollution in coastal areas.

[0004] Based on existing technologies, it has been found that coastal farmland experiences annual salinity accumulation of 0.5–1.2 t / ha due to seawater intrusion and high groundwater levels. Drainage technologies employed include open ditch drainage and underground pipe drainage. Open ditch drainage not only occupies excessive farmland but is also prone to collapse and failure. Existing underground pipe drainage systems mostly use a single sand filter layer, which significantly reduces permeability after prolonged use. Furthermore, electronic drainage valves lack soil parameter feedback mechanisms, hindering intelligent drainage and resulting in problems such as filter layer clogging, low salt removal efficiency, and non-point source pollution due to fertilizer leaching, leading to high nitrogen loss in paddy fields. Therefore, this invention proposes an underground pipe drainage system based on the "One Health" concept, suitable for reducing pollution and increasing yield in coastal farmland, to address the problems existing in current technologies. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to propose a concealed drainage system for reducing pollution and increasing yields in coastal farmland under the One Health concept. This system solves the problems that existing concealed drainage systems for farmland often use a single sand filter layer, which leads to a significant decrease in permeability after long-term use, and that electronic drainage valves lack a soil parameter feedback mechanism.

[0006] To achieve the objectives of this invention, the invention is implemented through the following technical solution: a concealed drainage system based on the One Health concept, suitable for reducing pollution and increasing yields in coastal farmland, comprising:

[0007] The soil information monitoring module includes a multi-parameter sensor array for real-time collection of soil information of coastal crops, including soil conductivity, pH value and water content.

[0008] The meteorological data access module integrates a satellite remote sensing interface and a communication protocol with the local meteorological station, and supports BeiDou short message communication to obtain meteorological parameters in real time.

[0009] The intelligent decision-making module sets differentiated soil conductivity thresholds based on crop growth stages and enables localized data processing and remote control of drainage valves through an edge computing gateway.

[0010] The multi-layer composite filter media structure is laid in the soil at a predetermined distance from the plant roots for water filtration and salt regulation.

[0011] The drainage pipe network system consists of a fishbone-shaped branch network of main pipes and branch pipes, used to receive and discharge water that has passed through a multi-layer composite filter media structure.

[0012] Further improvements are made in the following aspects: The intelligent decision-making module includes a weather linkage unit, a dynamic threshold unit, and a drainage decision map generator. The weather linkage unit analyzes the correlation between historical rainfall and soil salinity to generate a precipitation probability-drainage response association rule base. The dynamic threshold unit combines real-time soil conductivity values ​​with the predicted rainfall values ​​for the next 24 hours to calculate a comprehensive risk index and initiates forced drainage when the comprehensive risk index exceeds a preset value.

[0013] A further improvement is that the drainage decision map generator divides farmland into 10m×10m grids using a spatial interpolation algorithm, and each grid cell generates an independent drainage command based on real-time soil conductivity, water content, and groundwater level.

[0014] A further improvement is that the multi-layer composite filter material structure includes a pH regulating layer for adjusting soil pH, a permeable enhancement layer for improving permeability, and an anti-clogging interception layer for preventing soil particles from entering the drainage pipe network system, wherein the pH regulating layer, the permeable enhancement layer, and the anti-clogging interception layer are distributed sequentially from top to bottom.

[0015] Further improvements include: the pH control layer adopts a gradient compaction process, the permeable reinforcement layer adopts a particle size distribution design, and a quartz sand transition layer is set between the anti-blocking interception layer and the permeable reinforcement layer.

[0016] Further improvements include: the main pipe and branch pipes in the drainage pipe network system adopt flexible socket connection, with EPDM rubber sealing rings nested at the interface, the main pipe and branch pipes are buried at a depth of 1.2 to 1.8m, and the soil cover layer is made of compacted clay.

[0017] Further improvements include: the meteorological data access module includes a multi-source data interface for multiple different data sources, a data cleaning unit for removing noise from the data, and a local caching unit for local caching of meteorological data.

[0018] Further improvements include a solar power supply module, an IoT communication module, and a local human-machine interface module. The solar power supply module is equipped with a monocrystalline silicon photovoltaic panel, the IoT communication module supports NB-IoT / 4G dual-mode communication, and the local human-machine interface module uses a 7-inch capacitive touchscreen.

[0019] The beneficial effects of this invention are as follows: This invention breaks through the bottleneck of treating saline soil in coastal farmland during the dry season and waterlogging during the rainy season, establishes a soil salt-water-fertilizer synergistic regulation model, accurately matches the water requirements of crops, and achieves the dual goals of drainage and salt removal and non-point source pollution control under the One Health concept. It not only reduces soil improvement costs by 40% (compared to the soil replacement method), but also extends the service life of underground pipes to more than 15 years (compared to 8-10 years for conventional systems), resulting in an average yield increase of 300-500 yuan per mu in coastal farmland. At the same time, it reduces the total nitrogen load of agricultural runoff by 0.8 kg / mu·year, increases soil organic matter content by 0.5-1.2 g / kg, and reduces groundwater conductivity to below 2.5 mS / cm, achieving synergy between saline soil improvement, resource conservation, and ecological protection, and providing technical support for the sustainable development of coastal agriculture. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the framework structure of a concealed drainage system for reducing pollution and increasing yields in coastal farmland, based on the One Health concept of this invention. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Underground drainage technology for farmland utilizes an underground pipe system to drain water from the land, prevent soil salinization in irrigated areas, and improve low- and medium-yield farmland. It features high precision in controlling groundwater levels, saving arable land, and lower maintenance costs compared to open ditch drainage. The core of this technology lies in its unique technical principles and meticulously designed structure. This technology involves laying underground pipes, utilizing the slope and natural terrain to direct excess water from the farmland to drainage outlets, thus achieving effective drainage. Its structure mainly includes underground pipes, connecting pipes, and drainage outlets, each meticulously designed to ensure high efficiency and stability in drainage.

[0023] One Health, also known as "the same health" or "comprehensive health," aims to coordinate the overall interconnectedness of human, animal, environmental, and microbial health. This concept involves building an infectious disease prevention and control network through multi-institutional collaboration, encompassing multiple fields such as medicine, food, agriculture, and the environment, with a focus on zoonotic disease surveillance and ecosystem health maintenance.

[0024] It should be noted that the technical means not described in detail in the following embodiments are all conventional means in the field, are not the key points of the invention, and will not be elaborated upon.

[0025] Example 1

[0026] according to Figure 1 As shown, this embodiment provides a subsurface drainage system suitable for pollution reduction and yield increase in coastal farmland under the One Health concept. The system consists of a soil information monitoring module for collecting soil information from coastal farmland, a meteorological data access module for collecting local meteorological data from coastal farmland, an intelligent decision-making module for generating drainage decisions, a multi-layer composite filter structure for filtering groundwater flow, and a drainage pipe network system for drainage. Wherein:

[0027] Soil Information Monitoring Module: This module includes a multi-parameter sensor array for real-time collection of soil information from coastal crops in soil layers of 40cm, 60cm, and 80cm. The data includes soil electrical conductivity (EC value), pH value, and moisture content. The sensor accuracies are ±0.5mS / cm, ±0.1pH, and ±2%, respectively. These sensors can accurately measure soil salinity, pH, and moisture content. By setting different EC value thresholds, the module automatically determines whether to initiate drainage based on soil salinity.

[0028] When the EC value exceeds 3mS / cm, the system activates the forced drainage mode to discharge water with high salt content through the drainage pipe network system to prevent excessive soil salinity from affecting crop growth.

[0029] During the rice booting stage, the EC threshold is set to 2.8 mS / cm. When the EC value exceeds this threshold, the system starts intermittent or continuous drainage mode to discharge water with high salinity through the drainage pipe network system.

[0030] Meteorological data access module: Integrates satellite remote sensing interface (compatible with MODIS remote sensing imagery, 250m resolution) and local meteorological station communication protocol (National Meteorological Administration API interface, update frequency once / 10min), and supports BeiDou short message communication (covering areas without mobile signal). It acquires environmental parameters such as rainfall, evaporation, and tidal levels in real time. Based on the meteorological data, the system adjusts groundwater levels in advance. Specifically:

[0031] When the probability of rainfall is predicted to be over 70%, the system will activate the drainage mode 24 hours in advance through the drainage network system to lower the groundwater level by 30cm in order to prevent flooding during the rainy season.

[0032] After rainfall, the system determines whether to continue drainage based on the soil EC value and groundwater level, in order to quickly remove excess rainwater and prevent soil waterlogging and salt accumulation.

[0033] Intelligent decision-making module: Based on the crop growth stage (e.g., tillering stage and jointing stage of rice), differentiated EC thresholds are set (e.g., EC≤2.5mS / cm during tillering stage and EC≤3.0mS / cm during jointing stage). Through the edge computing gateway (which supports LoRa wireless transmission and can receive and process sensor data in real time), local data processing and remote control of drainage valves are realized. The intelligent decision-making module controls the electric butterfly valves of the drainage network system with a response time of less than 5 seconds. It can quickly open or close the drainage valves according to the instructions of the intelligent decision-making module.

[0034] Multi-layer composite filter media structure: laid in the soil 1.2m away from the plant roots, and set between the drainage pipe network system and the plant roots, for water filtration and salt regulation;

[0035] Drainage pipe network system: Consists of a fishbone-shaped branch network of main pipes and branch pipes (using DN80 double-wall corrugated pipes, made of high-density polyethylene, with a ring stiffness ≥8kN / m). 2 The outer wall corrugation height is ≥10mm, which can withstand greater soil pressure and avoid damage caused by the crushing of tillage machinery. The nominal diameter of the main pipe is 110mm, the nominal diameter of the branch pipe is 80mm, the branch pipe spacing is 5m, the pipe wall opening rate is 12%, the hole diameter is 5mm, and they are arranged in an alternating manner to ensure that the water flow can enter the pipe smoothly, while preventing soil particles from directly entering the pipe and causing blockage. The outer wall of the pipe is coated with an epoxy resin anti-corrosion coating (thickness ≥0.3mm).

[0036] In this embodiment, the intelligent decision-making module includes:

[0037] Weather linkage unit: Based on machine learning models (such as random forest algorithm), analyze the correlation between historical rainfall and soil salinity to generate a rule base for the association between precipitation probability and drainage response;

[0038] Dynamic threshold unit: Combines real-time EC value with the predicted rainfall value for the next 24 hours (e.g., triggering pre-drainage mode when rainfall is ≥10mm) to calculate the comprehensive risk index (IRI=EC×rainfall probability×soil texture coefficient). When IRI>0.8, forced drainage is initiated.

[0039] Drainage decision map generator: The farmland is divided into 10m×10m grids using spatial interpolation algorithms (such as Kriging interpolation). Each grid cell generates independent drainage instructions (drainage duration, frequency, valve opening) based on real-time EC value, water content, and groundwater level.

[0040] In this embodiment, the multi-layer composite filter material structure, from top to bottom, is as follows:

[0041] pH regulating layer: Serves as the upper filter media to regulate soil pH. It consists of a 2cm thick zeolite-biochar composite material (zeolite / biochar mass ratio 3:1, cation exchange capacity ≥120 cmol / kg, specific surface area ≥80 m²). 2 / g), biochar has good adsorption properties and can adsorb dissolved phosphorus in the soil, reducing phosphorus loss; zeolite helps to regulate soil pH and provides good aeration.

[0042] Permeable reinforcement layer: As the middle layer filter media, it uses 5cm thick graded gravel (particle size distribution curve conforms to AASHTO T27 standard, permeability coefficient ≥5×10). -3 (cm / s) is used to improve permeability, ensuring that water can flow through quickly, while preventing soil particles from entering the lower filter media and underground pipes;

[0043] Anti-clogging and interception layer: As the lower filter material, it uses 300g / m² polyester filament geotextile (equivalent pore size O). 90 ≤0.1mm, longitudinal tensile strength ≥20kN / m), the geotextile is located at the bottom layer, playing a filtering and protective role, preventing fine soil particles from entering the culvert, while allowing water to flow smoothly;

[0044] The above-mentioned multi-layer composite filter media structure achieves its anti-clogging function through the following process:

[0045] The pH control layer adopts a gradient compaction process, with the surface layer compaction degree ≥85% and the bottom layer compaction degree ≥90%.

[0046] The permeable reinforcement layer adopts a particle size distribution design, in which 40% of the particles are 0.25-0.5mm in diameter and 60% are 0.5-1mm in diameter.

[0047] A 2cm thick quartz sand transition layer (particle size 0.5-1mm) is set between the anti-blocking and interception layer and the permeable reinforcement layer to form a double filtration barrier;

[0048] By using the above-mentioned multi-layer composite filter media structure, the water flow path is adjusted: the water first permeates through the soil to the upper filter media, where it is adsorbed and filtered by biochar and zeolite, removing some dissolved phosphorus and regulating water quality. Then, the water flows into the middle filter media, where it is further filtered out by the rapid permeability of graded gravel. Finally, the water flows through the lower filter media into the drainage pipe network system and is discharged from the farmland.

[0049] In this embodiment, the drainage pipe network system has the following structural features:

[0050] The main pipe and branch pipes are connected by a flexible socket joint, and the joint is fitted with an EPDM rubber sealing ring (Shore 70±5 hardness, tensile strength ≥15MPa).

[0051] The pipeline foundation adopts a graded crushed stone cushion layer (thickness ≥30cm, particle size 5~40mm), and a geogrid (tensile strength ≥50kN / m) is laid at the bottom of the cushion layer.

[0052] The pipeline is buried at a depth of 1.2m, and the soil covering layer is made of compacted clay (compaction degree ≥95%). A warning tape (reflective film + high-strength polyester cloth) is installed on the top of the pipeline.

[0053] In this embodiment, the meteorological data access module includes:

[0054] Multi-source data interface: compatible with MODIS remote sensing imagery (250m resolution), China Meteorological Administration API interface (update frequency 1 time / 10min), and BeiDou short message communication (covering areas without mobile signal).

[0055] Data cleaning unit: Savitzky-Golay filter is used to eliminate noise in meteorological data, and the 3σ principle is used for outlier detection;

[0056] Local caching unit: Supports 72 hours of local caching of meteorological data when the network is down, ensuring continuous system operation.

[0057] The concealed pipe drainage system in this embodiment also includes:

[0058] Solar power module: Equipped with monocrystalline silicon photovoltaic panels (power ≥200Wp) and a 24V / 100Ah lithium iron phosphate battery pack, providing ≥72 hours of battery life on cloudy or rainy days;

[0059] IoT communication module: Supports NB-IoT / 4G dual-mode communication, data is uploaded to the cloud platform (HTTPS encrypted transmission, data update frequency 5 minutes).

[0060] Local human-computer interaction module: 7-inch capacitive touch screen (1024×600 resolution), supports historical data playback, threshold parameter modification and fault alarm prompts.

[0061] The concealed pipe drainage system in this embodiment achieves pollution reduction and efficiency improvement through the following methods:

[0062] Nitrogen and phosphorus synergistic interception: pH-controlled layer adsorbs phosphorus (adsorption capacity ≥5mg / g), and water-permeable enhancement layer retains ammonium nitrogen (retention rate ≥80%).

[0063] Microbial enhanced purification: Denitrifying bacteria are inoculated into the filter media layer (density ≥10). 8 (CFU / g), combined with a carbon source dosing device (sodium acetate dosage 0.5 kg / mu·time) to achieve simultaneous nitrogen and phosphorus removal;

[0064] Soil structure improvement: Regularly inject earthworm castings substrate through the drainage network system (application rate 200 kg / mu·time) to improve the stability of soil aggregates (>0.25mm aggregates account for ≥65%).

[0065] The concealed pipe drainage system in this embodiment has the following long-term operation and maintenance mechanism:

[0066] Filter media life warning: The filter media replacement prompt is triggered by monitoring the resistance change of each filter layer through a differential pressure sensor (set threshold ΔP=5kPa);

[0067] Modular design: The main pipes and branch pipes of the drainage network system are connected by quick-release flanges, and the replacement time is ≤30 minutes.

[0068] Example 2

[0069] This embodiment provides a method for underground drainage suitable for reducing pollution and increasing yields in coastal farmland, including the following steps:

[0070] S1. Multi-source data acquisition and monitoring

[0071] S11. Real-time monitoring of soil information

[0072] Using a multi-parameter sensor array, the electrical conductivity (EC value), pH value and water content of soil layers at 40cm, 60cm and 80cm are collected at preset intervals (e.g. every 10min). The monitoring data is uploaded to the edge computing gateway via the LoRaWAN protocol.

[0073] S12. Meteorological Data Access

[0074] It receives satellite remote sensing data (MODIS imagery, 250m resolution) and real-time data from local weather stations (rainfall, evaporation, tidal level, etc., updated at a frequency of ≥1 time / 10min). It ensures data integrity in areas without signal through BeiDou short message communication, uses Savitzky-Golay filters to eliminate data noise, removes outliers based on the 3σ principle, and enables local caching (72h data storage) when the network is down.

[0075] S2. Intelligent Decision-Making and Control Stage

[0076] S21. Dynamic Threshold Calculation

[0077] Calculate the comprehensive risk index (IRI = EC × rainfall probability × soil texture coefficient).

[0078] Triggering conditions: Forced drainage is initiated when IRI>0.8; emergency drainage is initiated when EC>4.0mS / cm or rainfall>50mm for 3 consecutive days.

[0079] S22. Generation of Drainage Decision Map

[0080] The farmland is divided into 10m×10m grids using the Kriging interpolation algorithm, and independent drainage instructions (duration, frequency, valve opening) are generated by combining real-time data.

[0081] S23. Instruction Issuance and Execution

[0082] The edge computing gateway (LoRaWAN protocol) sends commands to the electric butterfly valve with a response time of ≤5s and a valve opening and closing time of ≤3s;

[0083] S3. Multi-layer filter media filtration stage

[0084] S31. Water Flow Path

[0085] Groundwater → pH regulating layer (2cm zeolite-biochar composite material) → Permeability enhancement layer (5cm graded gravel) → Blocking and interception layer (300g / m³) 2 Geotextile → Drainage pipe network;

[0086] S32. Layering Function

[0087] pH regulation layer: adsorbs phosphorus (≥5mg / g) and regulates soil pH (cation exchange capacity ≥120cmol / kg).

[0088] Permeable reinforcement layer: filters suspended particles (0.25-0.5mm particles account for 30-40%), with a permeability coefficient ≥5×10⁻⁶. - 3 cm / s;

[0089] Anti-blocking interception layer: blocks fine soil particles <0.1mm (equivalent pore size O) 90 ≤0.1mm), quartz sand transition layer (0.5~1mm) double protection;

[0090] S4. Drainage and Regulation Stage

[0091] S41. Pipeline drainage

[0092] After filtration, the water flows through an HDPE double-wall corrugated pipe (DN80, ring stiffness ≥8kN / m). 2 The fishbone-shaped network is discharged, with a distance of 5-8m between the main pipe (110mm) and the branch pipe (80mm), and an opening rate of 12% (5mm×5mm rectangular holes).

[0093] S42. Dynamic Control Strategy

[0094] Pre-drainage mode: Drainage is initiated 24 hours before rainfall, and the groundwater level is pre-lowered by 30cm;

[0095] Nitrogen and phosphorus synergistic interception: pH layer adsorbs phosphorus, permeable layer retains ammonium nitrogen (≥80%), and microbial enhanced purification (≥10 denitrifying bacteria). 8 CFU / g).

[0096] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concealed drainage system for reducing pollution and increasing yields in coastal farmland under the One Health concept, characterized in that: include: The soil information monitoring module includes a multi-parameter sensor array for real-time collection of soil information of coastal crops, including soil conductivity, pH value and water content. The meteorological data access module integrates a satellite remote sensing interface and a communication protocol with the local meteorological station, and supports BeiDou short message communication to obtain meteorological parameters in real time. The intelligent decision-making module sets differentiated soil conductivity thresholds based on crop growth stages and enables localized data processing and remote control of drainage valves through an edge computing gateway. The multi-layer composite filter media structure is laid in the soil at a predetermined distance from the plant roots for water filtration and salt regulation. The drainage pipe network system consists of a fishbone-shaped branch network of main pipes and branch pipes, used to receive and discharge water that has passed through a multi-layer composite filter media structure.

2. The concealed drainage system for reducing pollution and increasing yield in coastal farmland under the One Health concept as described in claim 1, characterized in that: The intelligent decision-making module includes a weather linkage unit, a dynamic threshold unit, and a drainage decision map generator. The weather linkage unit analyzes the correlation between historical rainfall and soil salinity to generate a precipitation probability-drainage response association rule base. The dynamic threshold unit combines real-time soil conductivity values ​​with the predicted rainfall values ​​for the next 24 hours to calculate a comprehensive risk index and initiates forced drainage when the comprehensive risk index exceeds a preset value.

3. The concealed drainage system for reducing pollution and increasing yield in coastal farmland under the One Health concept, as described in claim 2, is characterized in that: The drainage decision map generator divides farmland into 10m×10m grids using a spatial interpolation algorithm. Each grid cell generates an independent drainage command based on real-time soil conductivity, moisture content, and groundwater level.

4. The concealed drainage system for reducing pollution and increasing yield in coastal farmland under the One Health concept as described in claim 1, characterized in that: The multi-layer composite filter material structure includes a pH regulating layer for adjusting soil pH, a permeable enhancement layer for improving permeability, and an anti-clogging interception layer for preventing soil particles from entering the drainage pipe network system. The pH regulating layer, the permeable enhancement layer, and the anti-clogging interception layer are distributed sequentially from top to bottom.

5. A concealed drainage system for reducing pollution and increasing yield in coastal farmland under the One Health concept, as described in claim 4, is characterized in that: The pH control layer adopts a gradient compaction process, the permeable reinforcement layer adopts a particle size distribution design, and a quartz sand transition layer is set between the anti-blocking interception layer and the permeable reinforcement layer.

6. A concealed drainage system for reducing pollution and increasing yields in coastal farmland under the One Health concept, as described in claim 1, is characterized in that: The main pipe and branch pipes in the drainage pipe network system adopt flexible socket connection, and the interface is nested with EPDM rubber sealing ring. The main pipe and branch pipe are buried at a depth of 1.2 to 1.8m, and the soil cover is made of clay and compacted.

7. A concealed drainage system for reducing pollution and increasing yields in coastal farmland under the One Health concept, as described in claim 1, is characterized in that: The meteorological data access module includes a multi-source data interface for multiple different data sources, a data cleaning unit for removing noise from the data, and a local caching unit for local caching of meteorological data.

8. A concealed drainage system for reducing pollution and increasing yield in coastal farmland under the One Health concept, as described in claim 1, is characterized in that: It also includes a solar power supply module, an IoT communication module, and a local human-machine interface module. The solar power supply module is equipped with a monocrystalline silicon photovoltaic panel, the IoT communication module supports NB-IoT / 4G dual-mode communication, and the local human-machine interface module uses a 7-inch capacitive touch screen.

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