Soil nitrogen cyclic collection device for simulating rainfall scene

Abstract

The utility model discloses a soil nitrogen circulating and collecting device for simulating a rainfall scene. Wherein a funnel placing hole is formed in the table top, the funnel is placed in the funnel placing hole, and the plant growing chamber is placed on the funnel; the leacheate collecting device is arranged right below the outlet of the funnel part below the funnel; the rainfall simulation frame is mounted on the table top, and nozzles in the rainfall simulation frame are uniformly arranged right above the plant growth chamber; a water leakage hole is formed in the center of a bottom plate of the barrel-shaped plant growth chamber. According to the utility model, different rainfall situations can be simulated, and the leaching process of various nitrogen nutrients can be realized in the plant growth chamber.

Description

Technical Field

[0001] This invention belongs to the field of sample preparation and testing technology, specifically a soil nitrogen cycle collection device that simulates precipitation scenarios. Background Technology

[0002] Nitrogen cycling is one of the important processes of nutrient cycling in ecosystems. Studies based on soil nitrous oxide emissions under the background of climate change have found that nitrogen leaching has a profound impact on global warming and eutrophication. Therefore, accurate and rapid monitoring of soil nitrous oxide emissions and nitrogen leaching processes is the foundation for a comprehensive understanding of ecosystem nitrogen cycling and the key to efficient and scientific management of ecosystem nitrogen cycling. At present, the monitoring systems and methods for ecosystem nitrogen cycling have the following three main defects and problems: (1) Traditional soil nitrogen leaching processes often need to be separated from the monitoring of soil nitrous oxide emissions due to equipment limitations, making it impossible to fully understand the nitrogen destination of the ecosystem; (2) There is a lack of simulation devices for ecosystem nitrogen cycling processes under different precipitation scenarios; traditional methods can only monitor soil nitrous oxide emissions and nitrogen leaching, but cannot achieve dynamic monitoring of ecosystem nitrogen cycling processes under different precipitation patterns. Therefore, it is particularly important to develop a system and method that can simulate different precipitation patterns and continuously and efficiently monitor ecosystem nitrogen cycling processes in the context of current changes in global precipitation patterns. Utility Model Content

[0003] To address the problems existing in the background technology, this utility model provides a soil nitrogen cycle collection device for simulating precipitation scenarios. The technical solution includes: a tabletop, a funnel, a precipitation simulation frame, a plant growth chamber, and a leachate collection device. The tabletop is placed on the ground by table legs, and a funnel placement hole is opened on the tabletop. The funnel is placed in the funnel placement hole, and the plant growth chamber is placed on the funnel. The leachate collection device is located directly below the outlet of the funnel. The precipitation simulation frame is installed on the tabletop, and the nozzles in the precipitation simulation frame are evenly arranged directly above the plant growth chamber. A drainage hole is opened in the center of the bottom plate of the barrel-shaped plant growth chamber.

[0004] The funnel includes: a leak-proof sidewall, a flowerpot placement plate, and a funnel section, wherein the flowerpot placement plate is fixedly connected to the upper end face of the funnel section, the annular leak-proof sidewall is fixedly connected to the outer edge of the flowerpot placement plate, and the plant growth chamber is placed above the flowerpot placement plate.

[0005] The upper edge of the leak-proof sidewall is higher than the upper surface of the flowerpot placement plate.

[0006] The precipitation simulation frame includes: legs, a water basin, nozzle mounting holes, nozzles, adjusting screw mounting blocks, and adjusting screws. The lower ends of multiple legs are fixed to the tabletop, and the water basin is mounted on the legs via multiple adjusting screw mounting blocks. Multiple nozzle mounting holes are opened on the lower plate of the water basin, and the nozzles are installed in the nozzle mounting holes.

[0007] The simulation frame also includes a plug, which is installed in the nozzle mounting hole.

[0008] The adjusting screw mounting block has through holes for mounting the support legs and threaded holes for mounting the screws, which are perpendicular to each other. The support legs pass through the through holes for mounting the support legs, and the adjusting screws are connected to the threaded holes for mounting the screws. The end of the adjusting screw presses against the support legs, thereby locking the relative position of the water basin and the support legs.

[0009] The beneficial effects of this utility model are as follows:

[0010] 1. To simulate different precipitation scenarios and realize various nitrogen nutrient leaching processes in the plant growth chamber, so that after collecting different leaching solutions, the nitrogen status of the soil can be used to comprehensively analyze the overall nitrogen cycle process of the ecosystem under the background of climate change.

[0011] 2. Due to its freely detachable structure, it can be used in a variety of scenarios. It can not only simulate different rainfall intensities and times at the same time, but also be used in a variety of ecosystems and crops, and has a wide range of application prospects. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of a soil nitrogen cycle collection device simulating a precipitation scenario according to the present invention;

[0013] Figure 2 This is a longitudinal sectional view of an embodiment of the present utility model;

[0014] Figure 3 This is a schematic diagram of the desktop and precipitation simulation frame in an embodiment of this utility model.

[0015] Wherein: 1-desktop, 2-funnel placement hole, 3-funnel, 31-leak-proof sidewall, 32-flowerpot placement plate, 33-fist section, 4-rainfall simulation frame, 41-leg, 42-water basin, 43-sprinkler mounting hole, 44-sprinkler, 45-leg clamping block, 46-water basin positioning bolt, 451-leg mounting through hole, 456-screw mounting threaded hole, 5-plant growth chamber, 51-leakage hole, 6-rinsing liquid collection device. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] like Figures 1-3The embodiment of the present invention shown includes: a tabletop 1, a funnel 3, a rainfall simulation frame 4, a plant growth chamber 5, and a leaching liquid collection device 6. The tabletop 1 is placed on the ground by table legs. A funnel placement hole 2 is opened on the tabletop 1, and the funnel 3 is placed in the funnel placement hole 2. The plant growth chamber 5 is placed on the funnel 3. The leaching liquid collection device 6 is located directly below the outlet of the funnel 33. The rainfall simulation frame 4 is installed on the tabletop 1, and the nozzles 44 in the rainfall simulation frame 4 are evenly arranged directly above the plant growth chamber 5. A drainage hole 51 is opened in the center of the bottom plate of the barrel-shaped plant growth chamber 5.

[0018] like Figure 1 and Figure 2 The funnel 3 shown includes: a leak-proof sidewall 31, a flowerpot placement plate 32, and a funnel portion 33, wherein the flowerpot placement plate 32 is fixedly connected to the upper end face of the funnel portion 33, the annular leak-proof sidewall 31 is fixedly connected to the outer edge of the flowerpot placement plate 32, and the plant growth chamber 5 is placed above the flowerpot placement plate 32; the upper edge of the leak-proof sidewall 31 is higher than the upper end face of the flowerpot placement plate 32; so that the water flowing out from the center of the plant growth chamber 5 can flow to the center and be collected, without flowing to other locations and causing pollution.

[0019] like Figures 1-3 The precipitation simulation frame 4 shown includes: support legs 41, a water basin 42, nozzle mounting holes 43, nozzles 44, adjusting screw mounting blocks 45, adjusting screws 46, and plugs (not shown in the figure). The lower ends of multiple support legs 41 are fixed to the tabletop 1. The water basin 42 is mounted on the support legs 41 by multiple adjusting screw mounting blocks 45. Multiple nozzle mounting holes 43 are opened on the lower plate of the water basin 42, and the nozzles 44 or plugs are installed in the nozzle mounting holes 43.

[0020] like Figure 3 The adjusting screw mounting block 45 shown has a leg mounting through hole 451 and a screw mounting threaded hole 456 with mutually perpendicular axes; the leg 41 passes through the leg mounting through hole 451, and the adjusting screw 46 is connected to the screw mounting threaded hole 456 by threads. The end of the adjusting screw 46 presses against the leg 41 to lock the relative position of the water basin 42 and the leg 41.

[0021] like Figure 3 The plant growth chamber 5 shown contains soil in which plants are grown. During operation, depending on different experimental requirements (such as the need to simulate the flow rate of precipitation), the size and number of nozzles 44 in the precipitation simulation frame 4 are changed, and the nozzle mounting holes 43 that do not require the installation of nozzles 44 are replaced with plugs. Then, the rinsing solution (tap water) is added to the water basin 42.

[0022] Subsequently, the leaching solution in the water basin 42 flows through the nozzle 44 to simulate rainfall into the soil of the plant growth chamber 5, where the plants in the soil will convert nitrogen; excess leaching solution flows through the funnel 3 to the leaching solution collection device 6 for collection.

Claims

1. A soil nitrogen cycle collection device simulating a precipitation scenario, characterized in that, include: The tabletop (1), funnel (3), precipitation simulation frame (4), plant growth chamber (5), and leaching liquid collection device (6) are arranged as follows: the tabletop (1) is placed on the ground by the table legs, the tabletop (1) has a funnel placement hole (2), the funnel (3) is placed in the funnel placement hole (2), and the plant growth chamber (5) is placed on the funnel (3); the leaching liquid collection device (6) is located directly below the outlet of the funnel (33) below the funnel (3); the precipitation simulation frame (4) is installed on the tabletop (1), and the nozzles (44) in the precipitation simulation frame (4) are evenly arranged directly above the plant growth chamber (5); the bottom plate of the barrel-shaped plant growth chamber (5) has a drainage hole (51) in the center.

2. The soil nitrogen cycle collection device for simulating precipitation scenarios according to claim 1, characterized in that, The funnel (3) includes: a leak-proof sidewall (31), a flowerpot placement plate (32), and a funnel part (33), wherein the flowerpot placement plate (32) is fixedly connected to the upper end face of the funnel part (33), the annular leak-proof sidewall (31) is fixedly connected to the outer edge of the flowerpot placement plate (32), and the plant growth chamber (5) is placed above the flowerpot placement plate (32).

3. The soil nitrogen cycle collection device for simulating precipitation scenarios according to claim 2, characterized in that, The upper edge of the leak-proof sidewall (31) is higher than the upper surface of the flowerpot placement plate (32).

4. The soil nitrogen cycle collection device for simulating precipitation scenarios according to claim 1, characterized in that, The precipitation simulation frame (4) includes: support legs (41), water basin (42), nozzle mounting holes (43), nozzle (44), adjusting screw mounting blocks (45), and adjusting screws (46). The lower ends of multiple support legs (41) are fixed to the tabletop (1), and the water basin (42) is mounted on the support legs (41) through multiple adjusting screw mounting blocks (45). Multiple nozzle mounting holes (43) are opened on the lower plate of the water basin (42), and the nozzles (44) are installed in the nozzle mounting holes (43).

5. A soil nitrogen cycle collection device simulating a precipitation scenario according to claim 4, characterized in that, The simulation frame (4) also includes a plug, which is installed in the nozzle mounting hole (43).

6. A soil nitrogen cycle collection device simulating a precipitation scenario according to claim 4, characterized in that, The adjusting screw mounting block (45) has a leg mounting through hole (451) and a screw mounting thread hole (456) with mutually perpendicular axes; the leg (41) passes through the leg mounting through hole (451), and the adjusting screw (46) is connected to the screw mounting thread hole (456) by thread. The end of the adjusting screw (46) presses the leg (41) to lock the relative position of the water basin (42) and the leg (41).

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