Simulated root exudates input device

Abstract

The utility model discloses simulated root exudates input equipment, which comprises an irrigation net with a plurality of drip irrigation pipelines, an electric pump with a timing function and a liquid storage barrel are communicated with a water path of the irrigation net, and the electric pump conveys liquid in the liquid storage barrel to soil through the irrigation net according to the periodic timing length of timing. The utility model has the advantages that the irrigation net electrically provides infusion pressure through the electric pump, enough pressure can be provided for conveying root exudates to drip irrigation management of the irrigation net, the electric pump automatically and periodically works through a timing function, the operation is convenient, the irrigation area of the plurality of drip irrigation pipelines is large, and a simulation result with high reliability can be obtained.

Description

Technical Field

[0001] This utility model relates to the field of root exudate simulation technology, and in particular to a device for simulating root exudate input. Background Technology

[0002] Rhizosphere soil plays a crucial role in soil ecosystems, significantly impacting plant growth, soil fertility, and the regulation of the global carbon cycle. A utility model patent (CN201720602562.2) authorized and announced on April 20, 2018, describes a device for simulating plant roots and rhizosphere ecology. The simulated plant root is a slender tubular structure. The front section is a permeation section made of a porous hydrophilic filter membrane with a closed end. The middle section is an extension tube, made of PE or PVC, and the final section is the sample inlet. The slender tubular structure contains stainless steel wire. The rhizosphere ecology simulation device includes a simulated plant root, a cultivation chamber, a sample inlet, and a sample inlet plug. The simulated plant root extends into the cultivation chamber through a positioning hole in the top strip. The sample inlet is outside the cultivation chamber. The sample inlet and sample inlet plug are independent components, and the cultivation chamber can be opened. The simulation method using syringe injection tubes has problems such as inconvenient operation, low injection efficiency, and poor reliability of simulation results for large-scale rhizosphere soil.

[0003] Therefore, it is necessary to design a simulated root exudate input device that is easy to operate, has a long continuous replenishment cycle, and has high reliability of simulation results. Utility Model Content

[0004] In order to overcome the shortcomings of poor simulation efficiency and inconvenient operation of existing root exudate simulation devices, this utility model provides a root exudate input device that is easy to operate and has high reliability of simulation results.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A device for simulating root exudate input includes an irrigation network with several drip irrigation lines. The irrigation network is connected to an electric pump with a timing function and a liquid storage tank. The electric pump delivers liquid from the liquid storage tank to the soil through the irrigation network according to the timing period.

[0007] The irrigation network of this application uses an electric pump to provide liquid pressure, which is sufficient to deliver root exudates to the drip irrigation management of the irrigation network. The electric pump works automatically and periodically through a timing function, which is convenient to operate. Furthermore, the irrigation area of ​​several drip irrigation pipelines is large, and highly reliable simulation results can be obtained.

[0008] Preferably, the electric pump has two parallel water paths, each connected to a set of irrigation networks for dual-path irrigation. This allows for increased coverage of the irrigation network while ensuring sufficient delivery pressure from the electric pump.

[0009] Preferably, the system also includes a rainproof enclosure, with the electric pump and storage tank housed within it. The rainproof enclosure reduces the impact of rainwater on the operation of the electric pump and storage tank, while also protecting them and minimizing disturbance from wild animals.

[0010] Preferably, the irrigation network includes a main inlet pipe and several branch pipes connected in parallel to the main inlet pipe. The main inlet pipe is connected to an electric pump via a pipeline, and several seepage pipes are evenly distributed on the branch pipes to form a drip irrigation pipeline. The branch pipes disperse the liquid in the main inlet pipe, and relatively uniform drip irrigation is achieved through the seepage pipes evenly distributed on the branch pipes, thus realizing a reliable simulation of root exudates.

[0011] Preferably, the end of the seepage pipe is sealed with a plug, and the pipe wall is densely covered with several seepage holes. This makes the seepage effect of the seepage pipe more similar to root secretion, improving the reliability of the simulation results.

[0012] Preferably, the storage tank is equipped with an outlet pipe connecting the inside and outside of the storage tank. The outlet pipe is connected to an electric pump and is fitted with a one-way valve that allows unidirectional flow from the storage tank outwards. This prevents root exudates flowing out of the storage tank from flowing back into it, ensuring the cleanliness of the root exudates inside the storage tank.

[0013] Preferably, the outlet pipe extends to the bottom of the storage tank. This ensures that all liquid in the storage tank can be transported outwards, facilitating the calculation of the amount of root exudates transported based on the tank's volume.

[0014] Preferably, the top of the storage tank is equipped with a lid, and the lid has a sterile air filter. When the lid is opened, root secretions can be added into the storage tank. The sterile air filter has a sterilization function, preventing bacteria from entering the storage tank through the air inlet valve and contaminating the root secretions inside the storage tank.

[0015] Preferably, the seepage pipe and the distribution pipe are connected by a connector, which is equipped with a hose clamp with several through holes for fixing to external components. This ensures reliable fixation of the seepage pipe.

[0016] Preferably, the electric pump operates on a cycle of 10 to 200 seconds per day, enabling automatic control of the electric pump cycle.

[0017] This invention has the following advantages: 1. It is easy to control and operate; 2. The results of the simulation of root exudate input are highly reliable; and the continuous replenishment cycle is long. Attached Figure Description

[0018] Figure 1This is a schematic diagram of one embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of one embodiment of the present invention with the rainproof box concealed.

[0020] Figure 3 This is a schematic diagram of the water distribution pipe structure in one embodiment of the present invention.

[0021] In the diagram: 1. Irrigation net; 2. Electric pump; 3. Storage tank; 31. Outlet pipe; 32. Tank lid; 33. Sterile air filter; 4. Main inlet pipe; 41. Cross-shaped adapter; 42. Main pipe; 43. Hose; 44. Vertical pipe; 5. Type III section net; 51. Branch pipe; 6. T-shaped adapter; 7. Leakage pipe; 8. L-shaped adapter; 9. Hose clamp; 10. Rainproof box. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] One embodiment of this utility model discloses a simulated root exudate input device, including an irrigation network 1 with several drip irrigation pipes. The irrigation network 1 is connected to an electric pump 2 with a timing function and a liquid storage tank 3. The electric pump 2 delivers liquid from the liquid storage tank 3 to the soil through the irrigation network 1 according to the timing period.

[0024] In this application, the storage tank 3 stores an artificially prepared root exudate solution or an artificially cultivated simulated rainfall solution. The electric pump 2 is connected to the storage tank 3 by a pipeline, which can transport the solution in the storage tank 3 to the irrigation network 1. The irrigation network 1 includes several drip irrigation lines, each set of drip irrigation lines simulating a plant root system. The drip irrigation lines transport the solution delivered by the electric pump 2 into the soil. The irrigation network 1 is used to simulate the root distribution of plants. The irrigation area of ​​several drip irrigation lines is large, and highly reliable simulation results can be obtained.

[0025] This application uses an electric pump 2 to pressurize and deliver the solution to the pipeline. The power provided by the motor can fully meet the pressure requirements of multiple outlets, resulting in a more balanced delivery pressure.

[0026] The electric pump 2 has a timing function, which can periodically deliver solutions automatically for extended periods. It can be operated automatically without human intervention. The combination of the storage tank and the pump body allows it to be placed on the ground, which not only extends the replenishment cycle but also makes it convenient to operate.

[0027] One embodiment of this utility model discloses a simulated root exudate input device, comprising an irrigation network 1 with several drip irrigation lines. The irrigation network 1 is connected to an electric pump 2 with a timing function and a storage tank 3. The electric pump 2 periodically delivers liquid from the storage tank 3 to the soil via the irrigation network 1 according to a timer function. The electric pump 2 has two parallel water lines, each connected to a set of irrigation networks 1 for dual-path irrigation. This expands the coverage area of ​​the irrigation network 1 while ensuring sufficient delivery pressure from the electric pump 2. The working cycle of the electric pump 2 is 10 to 200 seconds per day, achieving automatic control of the electric pump 2's cycle. For example, the working cycle of the electric pump 2 is set to operate for 15 seconds at a fixed time each day.

[0028] The irrigation network 1 includes a main inlet pipe 4 and several branch pipes 51 connected in parallel to the main inlet pipe 4. In this embodiment, there are three sets of branch pipes 51, which form a type III segment network 5. The main inlet pipe 4 includes a cross-shaped adapter 41 and main pipes 42 connected to both ends of the cross-shaped adapter 41. The other two ends of the cross-shaped adapter 41 are respectively connected to a hose 43 and a vertical pipe 44, thus forming a cross-shaped connector. The main inlet pipe 4 is connected to the electric pump 2 through the hose 43. The two main pipes 42 and the vertical pipe 44 in the cross-shaped connector are respectively connected to a branch pipe 51. The branch pipe 51 is connected to the cross-shaped connector through an inverted T-shaped adapter 6 with the vertical end facing upward. Several seepage pipes 7 are evenly distributed on the branch pipe 51 to form a drip irrigation pipeline. The branch pipe 51 includes several T-shaped adapters 6 and branch pipes. The branch pipes are connected to the two opposite ends of the T-shaped adapter 6, and the seepage pipes 7 are connected to the other end of the T-shaped adapter 6. The end of the water distribution pipe 51 is equipped with an L-shaped adapter 8, and the other end of the L-shaped adapter 8 is connected to a seepage pipe 7. In this embodiment, each water distribution pipe 51 is connected to four seepage pipes 7, that is, the liquid in the main water inlet 4 is dispersed by the water distribution pipes 51 of each group of Type III segment network 5, and relatively uniform drip irrigation is achieved through the seepage pipes 7 evenly distributed on the water distribution pipes 51, realizing a reliable simulation of root exudates. The end of the seepage pipe 7 is sealed with a plug, and the pipe wall of the seepage pipe 7 is densely covered with several seepage holes. This makes the seepage effect of the seepage pipe 7 more similar to root exudate, improving the reliability of the simulation results. The connectors, including the T-shaped adapter 6, the cross adapter 41, and the L-shaped adapter 8, are all equipped with hose clamps 9. The hose clamps 9 have several through holes, through which ropes can be threaded, thereby binding the connector tightly to external components such as piles and columns, realizing the reliable fixation of the seepage pipes 7. When setting up the device, the length of the seepage pipe 7 can be selected according to the experimental operation. At the same time, the dense seepage holes around the seepage pipe 7 can ensure that the solution is released evenly into the surrounding soil, which better simulates the process of carbon secretion by plant roots in nature.

[0029] The storage tank 3 is equipped with a water outlet pipe 31 connecting the inside and outside of the storage tank 3, extending to the bottom of the storage tank 3. The water outlet pipe 31 is connected to the electric pump 2, and is equipped with a one-way valve that allows unidirectional flow from the storage tank 3 outwards. When the electric pump 2 is working, it draws the solution out of the storage tank 3 through the water outlet pipe 31. The one-way valve prevents root secretions flowing out of the storage tank 3 from flowing back into the storage tank 3, ensuring the cleanliness of the root secretions inside the storage tank 3. The electric pump 2 is powered by four AA batteries.

[0030] The top of the storage tank 3 is threaded with a lid 32, and a sterile air filter 33 is provided on the lid 32. When the lid 32 is opened, root secretions can be added into the storage tank 3. The sterile air filter 33 has a sterilization function, preventing bacteria from entering the storage tank 3 through the air inlet valve and contaminating the root secretions inside the storage tank 3.

[0031] This embodiment discloses a simulated root exudate input device, comprising an irrigation network 1 with several drip irrigation lines. The irrigation network 1 is connected to an electric pump 2 with a timing function and a storage tank 3. The electric pump 2 delivers liquid from the storage tank 3 to the soil via the irrigation network 1 according to a timed period. The simulated root exudate input device also includes a rainproof box 10, within which the electric pump 2 and the storage tank 3 are housed. The rainproof box 10 is a box structure with a removable lid for sealing the top. The side walls of the rainproof box 10 have through holes for pipes to pass through, providing reliable protection for the electric pump 2 and the storage tank 3. The rainproof box 10 reduces the impact of rainwater on the operation of the electric pump 2 and the storage tank 3, while also protecting them and minimizing disturbance from wild animals.

[0032] The assembly of the simulated root exudate input device in this application includes the following:

[0033] 1) Assembling irrigation network 1 requires two Type III segment networks 5. Type III segment network 5 consists of three branch pipes 51 and cross-shaped connectors: each Type III segment requires 6 segments of 19.5 cm flexible hose; 6 segments of 9.7 cm flexible hose; 6 L-shaped adapters 8; 9 T-shaped adapters 6; and one cross-shaped adapter 41. Type III segment network 5 is formed by connecting three identical branch pipes 51 using cross-shaped connectors (41) with the main pipe 42. Each branch pipe 51 has a T-shaped connector in the middle, branching into two 9.7 cm flexible hoses at both ends. Each 9.7 cm hose is then connected to a T-shaped connector (T-shaped interface facing the ground), followed by a 19.5 cm flexible hose. L-shaped adapters 8 are then connected to both ends of the 9.7 cm flexible hose. 25 cm flexible hose segments are inserted into the vertical ends of each T-shaped adapter 6, and the three 25 cm hoses are connected to each other using cross-shaped connectors to complete Type III segment network 5. After connecting the 12 seepage tubes 7 (4 on each side) to the pipe joint and plugging them, each grid is placed in a clean bag and taken to the original sample site for installation.

[0034] 2) Use an electric drill to drill two 9mm holes at the lower part of the side of the rainproof sealing box. Fill the holes with silicone tube sealing rings. Pass one end of each of the two 60cm hoses through the silicone sealing ring of the rainproof box 10 and connect them to the two outlets of the electric pump 2 with timing function. Connect the other end (when assembling in place) to the cross connector of the type III segment network 5.

[0035] 3) Using an electric drill, drill three 9mm holes in the lid of the storage tank 3. Fill the holes with silicone tube sealing rings. Insert one end of each of the two 40cm flexible tubes through the silicone sealing ring of the rainproof box 10 and into the bottom of the tank. Connect the other end to the two inlets of the dual-path irrigation timer. Make two incisions and insert two sets of silicone disc-shaped one-way valves to prevent backflow from contaminating the storage tank 3. Connect the sterile air filter 33 to the top cover and insert it into the silicone sealing ring on the lid 32. Place the storage tank 3 and the electric pump 2 with the timer function into the rainproof box 10.

[0036] 4) The solutions in the storage tank are prepared in the laboratory and added to the storage tank for direct use after being brought to the sample site. The infusion system can support solutions prepared from non-regulated chemicals such as organic acids, amino acids, and sugars.

[0037] Simulated root exudate input system: Each unit occupies 1m2, the solution is evenly injected into the soil, 24 water outlets, adjustable liquid output rate (default 2 L per week), 5L storage tank, timed start-up, unattended operation.

[0038] The on-site installation for this application includes the following:

[0039] On-site installation requires a measuring tape and a 1.5cm diameter pointed soil sampling cone. Before installation, prepare a 1.2m*0.8m (slope <10%) site in the sample plot, carefully remove stones and any large debris from the soil surface, and check for holes in the ground.

[0040] 1) Use a Type III segment net 5 as a template: Place it on the ground, ensuring the hose is straight but not taut, and mark 12 insertion points. Remove the template, insert the 12 insertion points with a soil sampler, and make holes. Then, plug one end of the seepage tube 7, attach it to the outside of the drip arrow, and insert it into the soil hole. The seepage tube 7 should be submerged in the soil to a depth of about 0.5cm. Then, pull out the drip arrow.

[0041] 2) Ensure that the pipelines of another type III network 5 are straight. When installing type III network 5, the joints connecting the irrigation pipelines should be carefully inserted into the upper part of the corresponding seepage pipe 7 to avoid direct contact between the ends and the soil, and keep the inside of the pipeline clean.

[0042] 3) Use hose clamps 9 to securely fix each type III section 5 to the ground (0.5 cm above the ground) with the piles. Then connect the water hoses of the two outlets of the dual-channel electric pump 2 with timing function to the cross adapter 41 of each type III section 5, and connect the irrigation net 1 grid to the water outlet pipe 31 of the storage tank 3.

[0043] 4) After installation, adjust the tightness of the pipeline, check for leaks, install the battery in the irrigation pump, set the daily automatic drip irrigation duration, add root exudate solution (RE solution) to the storage tank 3, tighten the lid 32 of the storage tank 3, and cover the rainproof box 10. The instrument can then run automatically for 2-3 months. If the machine is turned on for 15 seconds each day, the liquid inside the storage tank can be used for 2 weeks.

Claims

1. A device for simulating root exudate input, characterized in that, The system includes an irrigation network with several drip irrigation lines. The irrigation network is connected to an electric pump with a timing function and a liquid storage tank. The electric pump delivers liquid from the liquid storage tank to the soil through the irrigation network according to the timing period. The irrigation network includes a main water inlet pipe and several branch pipes connected in parallel to the main water inlet pipe. The main water inlet pipe is connected to the electric pump through a pipeline. Several seepage pipes are evenly distributed on the branch pipes to form a drip irrigation line.

2. The simulated root exudate input device according to claim 1, characterized in that, The electric pump has two parallel water paths, each connected to a set of irrigation networks for dual-path irrigation.

3. The simulated root exudate input device according to claim 1, characterized in that, It also includes a rainproof box, an electric pump, and a liquid storage tank housed inside the rainproof box.

4. The simulated root exudate input device according to claim 1, characterized in that, The end of the seepage pipe is sealed with a plug, and the pipe wall is densely covered with several seepage holes.

5. A simulated root exudate input device according to claim 1 or 2, characterized in that, The storage tank is equipped with a water outlet pipe that connects the inside and outside of the storage tank. The water outlet pipe is connected to an electric pump and is equipped with a one-way valve that allows one-way flow from the storage tank outwards.

6. The simulated root exudate input device according to claim 5, characterized in that, The water outlet pipe extends to the bottom of the storage tank.

7. A simulated root exudate input device according to any one of claims 1 to 4, characterized in that, The top of the storage tank is equipped with a lid, and the lid is equipped with a sterile air filter.

8. A simulated root exudate input device according to claim 3 or 4, characterized in that, The seepage pipe and the water distribution pipe are connected by a connector. The connector is equipped with a hose clamp, and the hose clamp has several through holes for fixing to external components.

9. A simulated root exudate input device according to any one of claims 1 to 4, characterized in that, The working cycle of the electric pump is 10 to 200 seconds per day.

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