Research device and research method for plant hydraulic redistribution

Abstract

The invention discloses a plant hydraulic redistribution research device and a research method in the technical field of hydraulic redistribution research. The plant hydraulic redistribution research device comprises two pipelines and a separator, the partition piece comprises a sleeve piece and two partition plates arranged in the sleeve piece, the two pipelines are distributed up and down and are inserted into the two ends of the sleeve piece respectively, a bottom layer is arranged in the pipeline on the lower side, drainage holes are formed in the bottom layer and the partition plate on the upper side, and open holes are formed in the two partition plates; positioning assemblies and detection equipment are arranged in the two pipelines; two different kinds of soil are contained in the two arranged pipelines, the two pipelines are separated through the partition piece, the roots of the same plant are located in the two pipelines respectively, the device is used for researching the hydraulic redistribution situation when the same plant grows in the two different soil environments, the research comprehensiveness is improved, and the research efficiency is improved. Therefore, understanding of ecological system functions is improved, agricultural production practice is optimized, and water resource management and protection are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic redistribution research, and in particular to a research device and method for plant hydraulic redistribution. Background Art

[0002] Hydraulic redistribution is the process by which water is transported from areas of high water potential to areas of low water potential within the root system under the action of water potential differences. It is an important water use strategy for plants under conditions of uneven distribution of water resources. Currently, there are many ways to study water redistribution, including measuring soil water potential, liquid flow meter monitoring, controlled experiments, etc., and different methods have their own advantages and disadvantages. Among them, controlled experiments are another means of studying water redistribution. They can conduct quantitative research on the conditions and intensity of hydraulic occurrence, and can well overcome the problem that field observations of some areas and plants are difficult to achieve. Since a plant is generally studied in the same soil environment, when studying the impact of different soil environments on hydraulic redistribution, separate tests are generally performed (two soil environments are set up and plants are planted in the two soil environments for testing and comparison). There is a lack of testing of the same plant in two different soil environments, which has certain limitations. Summary of the Invention

[0003] The purpose of the present invention is to provide a research device and method for plant water redistribution, so as to solve the problem raised in the above background technology that since a plant is generally studied in the same soil environment, when studying the effects of different soil environments on water redistribution, they are generally tested separately, and there is a lack of testing of the same plant in two different soil environments, which has certain limitations.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a research device for plant hydraulic redistribution, comprising: two pipes and a separator;

[0005] The separator includes a kit and two partitions arranged in the kit. The two pipes are distributed in an upper and lower direction and are respectively inserted into the two ends of the kit. A bottom layer is provided in the lower pipe. The bottom layer and the upper partition are both provided with drainage holes. The two partitions are provided with openings. The openings are used to allow part of the roots of the plants planted in the upper pipe to enter the interior of the lower pipe.

[0006] Both of the pipelines are provided with positioning components and detection equipment, and the detection equipment is used to detect the moisture content of the soil inside the pipeline and the direction of liquid flow;

[0007] The positioning assembly includes a column and a clamping assembly and a supporting assembly arranged on the column. The clamping assembly is used to fix the main root of the plant, and the supporting assembly is used to support the lateral roots of the plant.

[0008] Preferably, the clamping assembly comprises a moving block slidingly arranged on the stand, two telescopic arms hingedly arranged on the moving block, and a pressing block arranged on the moving end of the telescopic arm.

[0009] Preferably, the support assembly comprises a rotating shaft and a mounting sleeve arranged on the rotating shaft, and the mounting sleeve is used for inserting the support rod.

[0010] Preferably, the side wall of the pipeline is provided with a through hole, and an observation tube is inserted into the through hole, and the pipeline and the observation tube are both organic glass tubes, and the outside of the pipeline is wrapped with a light shielding cloth.

[0011] Preferably, the upper side partition and the bottom layer are both provided with a barrier layer.

[0012] Preferably, a sealing element is arranged in the opening.

[0013] Preferably, the sealing element comprises a mounting ring and an annular air bag arranged on the inner side wall of the mounting ring.

[0014] Preferably, the pipeline comprises two arc-shaped tubes.

[0015] Preferably, the set is provided with a fastener to fix the two arc-shaped tubes on the set.

[0016] Preferably, a plant hydraulic redistribution research method uses the plant hydraulic redistribution research device, and comprises the following steps:

[0017] S1: The lower part of the plant root system is placed in the inside of the lower pipeline, and the main root of the plant is fixed by the clamping assembly, and the lateral root of the plant is supported by the support assembly, then the soil is filled, the partition is installed above the lower pipeline, the plant passes through the opening, then the upper pipeline is installed on the partition, the main root of the plant in the upper pipeline is fixed by the clamping assembly, and the lateral root of the plant is supported by the support assembly, and then the soil is filled.

[0018] S2: The soil water content and the liquid flow direction in the two pipelines are obtained by the detection equipment, and the influence of different soil environments on the plant hydraulic redistribution is obtained.

[0019] Preferably, gravel is placed at the bottom of the inner cavity of the pipeline, and the pipeline is backfilled with soil while tamping with stones when filling the soil.

[0020] Compared with the prior art, the plant hydraulic redistribution research device has the following beneficial effects:

[0021] 1. By setting up two pipes filled with two different soils and separating the two pipes with a divider, the roots of the same plant are placed inside the two pipes respectively. This is used to study the hydraulic redistribution of the same plant when growing in two completely different soil environments, increasing the comprehensiveness of the research, thereby improving the understanding of ecosystem function, optimizing agricultural production practices, and improving water resource management and protection;

[0022] 2. The positioning components installed inside the pipe can fix the plants planted inside the pipe and support the lateral roots of the plants, making it easier to plant the plants in the research device and ensuring that the plant roots are in a reasonable position, thereby improving the accuracy of the research. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the research device structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure between the pipeline and the separator of the present invention;

[0025] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at center A;

[0026] Figure 4 This is a schematic diagram of the positioning component structure of the present invention;

[0027] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0028] In the figure: 1. Pipe; 101. Arc tube; 2. Observation tube; 3. Positioning assembly; 31. Column; 32. Clamping assembly; 321. Moving block; 322. Telescopic arm; 323. Pressing block; 33. Support assembly; 331. Rotating shaft; 332. Mounting sleeve; 4. Fastener; 5. Separator; 51. Partition; 52. Kit; 53. Opening; 6. Seal; 61. Mounting ring; 62. Annular airbag; 7. Bottom layer; 8. Barrier layer. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figure 1 and Figure 2, a research device for plant hydraulic redistribution, comprising: two pipes 1 and a separator 5;

[0032] Among them, see Figure 2 The separator 5 includes a kit 52 and two partitions 51 arranged in the inner cavity of the kit 52. The two partitions 51 are distributed up and down, and there is a gap between the two partitions 51. The two pipes 1 are respectively inserted into the upper and lower ends of the inner cavity of the kit 52. The upper partition 51 fits with the bottom of the upper pipe 1, and the lower partition 51 fits with the top of the lower pipe 1. A bottom layer 7 is provided at the bottom of the inner cavity of the lower pipe 1. Drainage holes are provided on the bottom layer 7 and the upper partition 51. An opening 53 is provided in the middle part of the two partitions 51.

[0033] See also Figure 1 、 Figure 2 and Figure 4 , the inner cavities of the two pipes 1 are provided with positioning components 3 and detection equipment (the detection equipment is a liquid flow meter and a resistive soil moisture sensor, etc., used to detect the moisture content of the soil inside the pipe 1 and the direction of liquid flow);

[0034] Among them, see Figure 4 and Figure 5 The positioning assembly 3 includes a column 31, a clamping assembly 32 and a supporting assembly 33; the clamping assembly 32 includes a moving block 321, two telescopic arms 322 (the telescopic arms 322 include a sleeve, a moving rod slidably inserted in the sleeve and a bolt for fixing the moving rod) and two pressing blocks 323. The moving block 321 is slidably arranged on the side wall of the column 31 (the moving block 321 can move up and down), and the two telescopic arms 322 are symmetrically hinged on the side wall of the moving block 321 (the fixed end of the telescopic arm 322 is hinged to the moving block 321 through a rotating shaft, and the telescopic arm 322 is symmetrically hinged to the moving block 321). A spring is installed between the blocks 321 to drive the two telescopic arms 322 to move closer to each other), and the two pressure blocks 323 are respectively installed on the movable ends of the two telescopic arms 322; there are several support assemblies 33, and the several support assemblies 33 are sequentially arranged on the column 31 along the length extension direction of the column 31. The support assembly 33 includes a rotating shaft 331 and a mounting sleeve 332 provided on the rotating shaft 331, and the rotating shaft 331 is installed on the side wall of the column 31; according to the position of the lateral roots of the plant, support rods can be inserted into different mounting sleeves 332, and the support rods are used to support the lateral roots of the plant.

[0035] A research method for plant water redistribution, comprising the following steps:

[0036] First, place the lower part of the plant root system into the lower pipe 1, and fix the main root of the plant with the clamping assembly 32, support the lateral roots of the plant with the support assembly 33, and then fill the lower pipe 1 with soil. After completion, install the partition 5 above the lower pipe 1, and let the plant pass through the opening 53. Then, install the upper pipe 1 on the partition 5, and then use the clamping assembly 32 in the upper pipe 1 to fix the main root of the plant inside the upper pipe 1, support the lateral roots of the plant with the support assembly 33, and then fill the upper pipe 1 with soil.

[0037] It should be noted that the soil environment inside the upper and lower pipes 1 is different, such as the water content;

[0038] Second, the soil moisture content and liquid flow direction inside the two pipes 1 are obtained through detection equipment, and the impact of different soil environments on plant water redistribution is obtained.

[0039] It should be noted that in order to prevent soil from leaking out of the pipe 1, crushed stones are placed on the top of the bottom layer 7 and the upper partition 51 before filling the soil; during the soil backfilling process, stones are used to compact the soil while backfilling to make the soil bulk density close to that under field conditions.

[0040] In this embodiment, as a further optimization solution, please refer to Figure 1 and Figure 2 A through hole is provided on the side wall of the pipe 1, and an observation tube 2 is inserted into the through hole. Both the observation tube 2 and the pipe 1 are transparent organic glass tubes. The instrument is inserted into the interior of the observation tube 2, and the root system is scanned regularly, which can be used to track the dynamics of the root system. The outside of the pipe 1 is wrapped with a shade cloth. Because the growth of plant roots is very sensitive to the root system, the shade cloth is used to block the plant growth to protect it. The shade cloth is removed during regular inspections.

[0041] It should be noted that the pipe 1 has a diameter of 30 cm, a height of 60 cm, and a wall thickness of 8 mm.

[0042] In this embodiment, as a further optimization solution, please refer to Figure 2 , a barrier layer 8 is provided on the top wall of the upper partition 51 and the bottom layer 7. The barrier layer 8 refers to a fine nylon mesh to prevent soil loss inside the pipeline 1.

[0043] In this embodiment, as a further optimization solution, please refer to Figure 2 and Figure 3 A sealing member 6 is provided in the opening 53; the sealing member 6 includes a mounting ring 61 and an annular air bag 62 provided on the inner wall of the mounting ring 61; after the roots of the plant pass through the opening 53, the annular air bag 62 is sleeved on the outer wall of the main root of the plant, playing a role in blocking the communication between the upper and lower pipes 1.

[0044] It should be noted that the mounting ring 61 is detachably mounted in the inner cavity of the opening 53 , such as by threaded connection, so that the sealing member 6 can be removed from the opening 53 .

[0045] In this embodiment, as a further optimization solution, please refer to Figure 1 and Figure 2 The pipeline 1 includes two arc-shaped tubes 101, which divide the pipeline 1 into two halves, making it more convenient to install the plant into the pipeline 1, and also making it easier for the positioning component 3 to fix and support the plant. After the plant is fixed, the two arc-shaped tubes 101 are put together; the kit 52 is provided with a fastener 4, which includes a fastening belt and a bolt, which is used to fix the two arc-shaped tubes 101 together and fixed to the kit 52, and at the same time can seal the gap between the pipeline 1 and the kit 52.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A research device for plant water redistribution, characterized by: include: Two pipes (1) and a separator (5); The partition (5) comprises a set (52) and two partitions (51) arranged in the set (52); the two pipes (1) are distributed in an upper and lower manner and are respectively inserted into the two ends of the set (52); a bottom layer (7) is provided in the lower pipe (1); drainage holes are provided on the bottom layer (7) and the upper partition (51); and openings (53) are provided on the two partitions (51); the openings (53) are used to allow part of the roots of the plants planted in the upper pipe (1) to enter the interior of the lower pipe (1); A positioning assembly (3) and a detection device are provided in each of the two pipes (1), and the detection device is used to detect the water content and liquid flow direction of the soil inside the pipe (1); The positioning assembly (3) comprises a column (31) and a clamping assembly (32) and a supporting assembly (33) arranged on the column (31); the clamping assembly (32) is used to fix the main root of the plant, and the supporting assembly (33) is used to support the lateral roots of the plant.

2. The research device for plant water redistribution according to claim 1, characterized in that: The clamping assembly (32) comprises a moving block (321) slidably arranged on the column (31), two telescopic arms (322) hinged to the moving block (321), and a pressing block (323) arranged on the moving end of the telescopic arms (322).

3. The research device for plant water redistribution according to claim 1, characterized in that: There are a plurality of support assemblies (33), and the plurality of support assemblies (33) are sequentially arranged on the column (31) along the length extension direction of the column (31). The support assembly (33) comprises a rotating shaft (331) and a mounting sleeve (332) arranged on the rotating shaft (331), and the mounting sleeve (332) is used for inserting the support rod.

4. The research device for plant water redistribution according to claim 1, characterized in that: A through hole is provided on the side wall of the pipe (1), an observation tube (2) is inserted into the through hole, the observation tube (2) and the pipe (1) are both organic glass tubes, and the outside of the pipe (1) is wrapped with a light-shielding cloth.

5. The research device for plant water redistribution according to claim 1, characterized in that: The upper partition (51) and the bottom layer (7) are both provided with a barrier layer (8).

6. The research device for plant water redistribution according to claim 1, characterized in that: A sealing member (6) is provided in the opening (53); The sealing member (6) comprises a mounting ring (61) and an annular air bag (62) provided on the inner side wall of the mounting ring (61).

7. The device for studying plant water redistribution according to claim 1, characterized in that: The pipeline (1) comprises two arc-shaped tubes (101); The set (52) is provided with a fastener (4) for fixing the two arc-shaped tubes (101) on the set (52).

8. A method for studying plant water redistribution, using a plant water redistribution research device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Place the lower part of the plant root system into the lower pipe (1), fix the main root of the plant by the clamping assembly (32), support the lateral roots of the plant by the supporting assembly (33), fill with soil, install the partition (5) above the lower pipe (1), and make the plant pass through the opening (53), then install the upper pipe (1) on the partition (5), fix the main root of the plant inside the upper pipe (1) by the clamping assembly (32), support the lateral roots of the plant by the supporting assembly (33), and fill with soil; S2: The soil moisture content and liquid flow direction inside the two pipes (1) are obtained through detection equipment to obtain the impact of different soil environments on plant water redistribution.

9. The method for studying plant water redistribution according to claim 8, characterized in that: Crushed stones are placed at the bottom of the inner cavity of the pipe (1), and when the pipe (1) is filled with soil, the soil is backfilled and compacted with stones.

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