Plant root soil in-situ observation and sampling experiment device
By designing an in-situ observation and sampling device for plant roots and soil, and using an plexiglass incubator and a spraying device, the problem of traditional sampling tools damaging the soil structure was solved, enabling undisturbed sampling and continuous observation of plant roots and soil, thus improving sampling efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING UNIVERSITY
- Filing Date
- 2025-05-24
- Publication Date
- 2026-05-19
AI Technical Summary
Existing technologies make it difficult to achieve undisturbed sampling and continuous observation of plant root soil. Traditional tools are prone to damaging soil structure, affecting the accuracy of research, especially in clay soils or soils containing organic matter layers where samples are prone to collapse.
Design an experimental device for in-situ observation and sampling of plant roots and soil. It uses an plexiglass incubator and a spray device, combined with vacuum suction cup sampling, to provide a controllable growth environment and achieve stratified sampling and undisturbed sample collection.
It enables continuous observation and frequent sampling of plant root growth, avoids soil collapse, ensures normal plant growth, and improves sampling efficiency and accuracy.
Smart Images
Figure CN224250282U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an experimental device for in-situ observation and sampling of plant root soil, belonging to the technical field of experimental equipment. Background Technology
[0002] Root soil sampling is a core technology for elucidating plant-soil interaction mechanisms. Its necessity lies in accurately characterizing the dynamics of the root soil microenvironment by obtaining undisturbed samples: in the agricultural field, it can reveal the driving effect of root exudates on nutrient molecule migration and guide precision fertilization; in ecological restoration, it can locate the enrichment patterns of pollutants in the rhizosphere and optimize phytoremediation strategies; at the basic research level, it can establish a quantitative relationship between root phenotypic parameters and soil physical structure, providing data support for crop stress resistance breeding.
[0003] Currently, traditional root soil sampling methods mainly rely on open-cut profile sampling and fixed-point drilling techniques. Due to soil obstruction, the growth status of plant roots cannot be known before sampling, making continuous observation of plant root soil impossible and resulting in overly one-sided analysis results. Conventional sampling tools (such as shovels and augers) can easily damage the physical structure of the soil, making stratified sampling difficult and making it hard to obtain undisturbed samples. Especially for clay soils or soils containing organic matter layers, samples are prone to collapsing and mixing, inhibiting subsequent normal plant growth and directly affecting the accuracy of the research. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide an experimental device for in-situ observation and sampling of plant roots and soil. This device can effectively observe the root system and growth status of plants by setting up an incubator with plexiglass. At the same time, a spray device is set up to provide a normal growth environment for plants and solve the problem of soil collapse in traditional sampling, so as to avoid affecting the subsequent normal growth of plants. It can realize continuous observation and high-frequency sampling throughout the entire growth cycle of plants.
[0005] To solve the above problems, the specific technical solution of this utility model is as follows: an experimental device for in-situ observation and sampling of plant roots and soil, including a water tank, a rainfall device, and an incubator; the rainfall device includes multiple rainfall nozzles, which are connected in series through pipelines, and the end of the pipelines is connected to the water tank through a water pump; an incubator with plants is provided directly below each rainfall nozzle; three vertical surfaces of the incubator are made of plexiglass, and the other vertical surface is a sampling wall; several movable doors are provided on the sampling wall; a vacuum suction cup is attracted to one of the movable doors.
[0006] The sampling wall consists of a resin frame and a transparent plexiglass door. The resin frame divides the sampling wall into several blank areas of equal size, and the transparent plexiglass door is placed in the blank area and connected to the resin frame by hinges.
[0007] A sealing strip is provided on the surface of the blank area of the resin frame, and the transparent plexiglass door is sealed with the sealing strip.
[0008] The rain-receiving device is supported by a steel frame. The upper frame is 3m above the ground and is equipped with LED lights with a spectral range of 400-700nm. The lower frame is 2m above the ground and is connected to the rain-receiving nozzles.
[0009] The experimental device for in-situ observation and sampling of plant roots and soil, using the above-mentioned structure, has the following advantages:
[0010] 1. This utility model facilitates the observation of plant root systems and growth by using a transparent plexiglass plate;
[0011] 2. By setting up a sampling wall, this utility model can use a suction cup to open the glass plate to take roots according to the root height, and can also open the glass plate at the corresponding height to collect deep, middle and surface soil, realizing stratified sampling, facilitating the collection of undisturbed samples, saving sampling costs and improving efficiency.
[0012] 3. This utility model provides a controllable plant growth environment by connecting a rainfall device, which is beneficial to the normal growth of plants. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the experimental device for in-situ observation and sampling of plant roots and soil.
[0014] Figure 2 This is a schematic diagram of the sampling wall structure. Detailed Implementation
[0015] like Figure 1 As shown, an experimental device for in-situ observation and sampling of plant roots and soil includes a water tank 1, a rainfall device 2, and a culture box 3. The culture box 3 is filled with soil and planted with plants. The bottom of the culture box 3 has an array of drainage holes with a diameter of 20 mm and a spacing of 100 mm × 100 mm. The rainfall device 2 includes multiple rainfall nozzles 4, which are connected in series by pipes. The end of the pipes is connected to the water tank 1 via a water pump 5. A culture box 3 with plants is placed directly below each rainfall nozzle 4. Three vertical surfaces of the culture box 3 are made of plexiglass, and the other vertical surface is a sampling wall 7. The growth of plant roots is observed through the transparent plexiglass, and basic growth indicators of the plant roots are tested. The sampling wall 7 has several movable doors 7-2. A vacuum suction cup 8 is attracted to one of the movable doors 7-2.
[0016] like Figure 2As shown, the sampling wall 7 consists of a resin frame 7-1 and a transparent plexiglass door 7-2. The resin frame 7-1 divides the sampling wall 7 into several equal-area blank areas. The transparent plexiglass door 7-2 is placed within the blank areas and is connected to the resin frame 7-1 via hinges 9. When deep, middle, and surface soil samples need to be collected based on root height, stratified sampling can be achieved. The corresponding movable door 7-2 can be opened with the help of suction cups 8, facilitating the collection of undisturbed samples, saving sampling costs, and improving efficiency. After sampling, sterile quartz sand is backfilled to avoid soil collapse and ensure normal plant growth.
[0017] A sealing strip 10 is provided on the surface of the blank area of the resin frame 7-1, and the transparent plexiglass door 7-2 is sealed to the sealing strip 10. This ensures the sealing performance of the movable door 7-2 when it is not open.
[0018] The rain-receiving device 2 is supported by a steel bracket 11. The upper bracket is 3m above the ground and is equipped with an LED light 12 with a spectral range of 400-700nm. The lower bracket is 2m above the ground and is connected to the rain-receiving nozzle 4.
Claims
1. An experimental device for in-situ observation and sampling of plant root soil, characterized in that: It includes a water tank (1), a rain device (2), and a cultivation box (3); the rain device (2) includes multiple rain nozzles (4), which are connected in series by pipelines, and the end of the pipelines is connected to the water tank (1) by a water pump (5); a cultivation box (3) with plants is provided directly below each rain nozzle (4); three vertical surfaces of the cultivation box (3) are made of plexiglass, and the other vertical surface is a sampling wall (7); several transparent plexiglass doors (7-2) are provided on the sampling wall (7); a vacuum suction cup (8) is attracted to one of the transparent plexiglass doors (7-2).
2. The plant root-soil in-situ observation and sampling experimental device according to claim 1, characterized in that: The sampling wall (7) consists of a resin frame (7-1) and a transparent plexiglass door (7-2). The resin frame (7-1) divides the sampling wall (7) into several blank areas of equal area. The transparent plexiglass door (7-2) is set in the blank area and is connected to the resin frame (7-1) through a hinge (9).
3. The plant root-soil in-situ observation and sampling experimental device according to claim 2, characterized in that: A sealing strip (10) is provided on the surface of the blank area of the resin frame (7-1), and the transparent organic glass door (7-2) is sealed with the sealing strip (10).
4. The plant root-soil in-situ observation and sampling experimental device according to claim 1, characterized in that: The rain-making device (2) is supported by a steel bracket (11). The upper bracket is 3m above the ground and is equipped with an LED light (12) with a spectral range of 400-700nm. The lower bracket is 2m above the ground and is connected to a rain-making nozzle (4).