A device and method for studying plant hydraulic redistribution

Abstract

The application discloses a kind of plant hydraulic redistribution research device and research method of technical field of hydraulic redistribution research, comprising: two pipes and partition;The partition includes sleeve and two baffle arranged in sleeve, two The pipe is distributed upside down and is inserted in the both ends of sleeve respectively, bottom layer is arranged in the pipe of lower side, drainage hole is arranged on the bottom layer and upper baffle, two The baffle is provided with opening;Two The pipe is equipped with positioning assembly and detection equipment;The application is equipped with two different soils by two pipes, and two pipes are separated by partition, so that the roots of the same plant are respectively in the inside of two pipes, for studying the hydraulic redistribution of the same plant when growing in two completely different soil environments, increase the comprehensiveness of research, to improve the understanding of ecosystem function, optimize agricultural production practice, improve water resources management and protection.

Description

Technical Field

[0001] This invention relates to the field of hydraulic redistribution research technology, specifically to a research device and method for plant hydraulic redistribution. Background Technology

[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 influence of water potential differences. It is an important water use strategy for plants under conditions of uneven water resource distribution. Currently, there are many methods for studying water redistribution, including soil water potential measurement, slurry flow meter monitoring, and controlled experiments. Each method has its own advantages and disadvantages. Among them, controlled experiments are another means of studying water redistribution. They can conduct quantitative studies on the conditions and intensity of hydraulic events, and can effectively overcome the problem that field observation of plants is difficult in some areas. Since a plant is generally studied in the same soil environment, the effects of different soil environments on hydraulic redistribution are usually tested separately (two soil environments are set up and the plant is planted in the two soil environments for 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 this invention is to provide a research apparatus and method for plant water redistribution, in order to solve the problem mentioned in the background art that since a plant is generally studied in the same soil environment, and the influence of different soil environments on water redistribution is generally tested separately, there is a lack of testing of the same plant in two different soil environments, which has certain limitations.

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

[0005] The separator includes a kit and two partitions inside the kit. The two pipes are arranged vertically and inserted into both ends of the kit. The lower pipe has a bottom layer. Both the bottom layer and the upper partition have drainage holes. The two partitions have openings. The openings are used to allow part of the roots of the plant planted in the upper pipe to enter the interior of the lower pipe.

[0006] Both of the pipes are equipped with positioning components and detection devices, the detection devices being used to detect the water content of the soil inside the pipes and the direction of liquid flow;

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

[0008] Preferably, the clamping assembly includes a movable block slidably mounted on the column, two telescopic arms hinged to the movable block, and a pressure block mounted on the movable end of the telescopic arms.

[0009] Preferably, there are several support components, which are sequentially arranged on the column along the length of the column. Each support component includes a pivot and a mounting sleeve on the pivot. The mounting sleeve is used to insert a support rod.

[0010] Preferably, the side wall of the pipe is provided with a through hole, and an observation tube is inserted into the through hole. Both the observation tube and the pipe are made of plexiglass, and the outside of the pipe is wrapped with a light-blocking cloth.

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

[0012] Preferably, a sealing element is provided inside the opening;

[0013] The sealing element includes a mounting ring and an annular airbag disposed on the inner sidewall of the mounting ring.

[0014] Preferably, the pipe comprises two arc-shaped pipes;

[0015] The kit is equipped with fasteners to secure the two arc-shaped tubes to the kit.

[0016] Preferably, a method for studying plant hydraulic redistribution, utilizing the aforementioned plant hydraulic redistribution research apparatus, includes the following steps:

[0017] S1: Place the lower part of the plant root system inside the lower pipe, fix the main root of the plant with the clamping component, support the lateral roots of the plant with the support component, fill with soil, install the separator above the lower pipe, and let the plant pass through the opening. Then install the upper pipe onto the separator, fix the main root of the plant inside the upper pipe with the clamping component, support the lateral roots of the plant with the support component, and fill with soil.

[0018] S2: By using detection equipment to obtain the soil moisture content and liquid flow direction inside the two pipes, the influence of different soil environments on plant hydraulic redistribution can be determined.

[0019] Preferably, the bottom of the inner cavity of the pipe is filled with gravel, and the pipe is compacted with stones while backfilling with soil.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. Two different types of soil are placed in two pipes and separated by a separator, so that the roots of the same plant are located in the two pipes respectively. This is used to study the hydraulic redistribution of water when the same plant grows in two very different soil environments, which increases the comprehensiveness of the study, thereby improving the understanding of ecosystem functions, optimizing agricultural production practices, and improving water resource management and protection.

[0022] 2. By using positioning components installed inside the pipe to fix the plants planted inside the pipe and support the lateral roots of the plants, the plants can be easily planted into the research device, and the plant roots can be placed in a reasonable position, thereby improving the accuracy of the research. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the research device of the present invention;

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

[0025] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[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 Enlarged schematic diagram of the structure at point B.

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

[0029] 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.

[0030] Example 1

[0031] Please see Figure 1 and Figure 2A research device for plant water redistribution includes: two pipes 1 and a separator 5;

[0032] Please refer to Figure 2 The separator 5 includes a kit 52 and two partitions 51 disposed in the inner cavity of the kit 52. The two partitions 51 are arranged vertically and there is a gap between the two partitions 51. Two pipes 1 are respectively inserted into the upper and lower ends of the inner cavity of the kit 52. The upper partition 51 is attached to the bottom of the upper pipe 1, and the lower partition 51 is attached to the top of the lower pipe 1. The bottom of the inner cavity of the lower pipe 1 is provided with a bottom layer 7. Drainage holes are provided on both the bottom layer 7 and the upper partition 51. An opening 53 is provided in the middle part of the two partitions 51.

[0033] Please see Figure 1 , Figure 2 and Figure 4 Both pipes 1 are equipped with positioning components 3 and detection devices (the detection devices are flow meters and resistive soil moisture sensors, etc., used to detect the water content and flow direction of the soil inside pipe 1).

[0034] Please refer to Figure 4 and Figure 5 The positioning assembly 3 includes a column 31, a clamping assembly 32, and a support assembly 33. The clamping assembly 32 includes a movable block 321, two telescopic arms 322 (each telescopic arm 322 includes a sleeve, a movable rod slidably inserted into the sleeve, and bolts for fixing the movable rod), and two pressure blocks 323. The movable block 321 is slidably mounted on the side wall of the column 31 (the movable block 321 can move up and down). The two telescopic arms 322 are symmetrically hinged to the side wall of the movable block 321 (the fixed ends of the telescopic arms 322 are hinged to the movable block 321 via pivots, and the telescopic arms 322 and the movable blocks 323 are connected). A spring is installed between blocks 321 to drive the two telescopic arms 322 to move closer together. Two pressure blocks 323 are respectively installed on the moving ends of the two telescopic arms 322. There are several support components 33, which are sequentially arranged on the column 31 along the length of the column 31. Each support component 33 includes a rotating shaft 331 and a mounting sleeve 332 on the rotating shaft 331. The rotating shaft 331 is installed on the side wall of the column 31. Depending on the position of the plant's lateral roots, support rods can be inserted into different mounting sleeves 332 to support the plant's lateral roots.

[0035] A research method for plant water redistribution, the steps of which are as follows:

[0036] First, place the lower part of the plant root system inside the lower pipe 1, and fix the main root of the plant with the clamping component 32 and support the lateral roots of the plant with the support component 33. Then fill the lower pipe 1 with soil. After completion, install the separator 5 above the lower pipe 1 and let the plant pass through the opening 53. Then install the upper pipe 1 onto the separator 5. Then use the clamping component 32 in the upper pipe 1 to fix the main root of the plant inside the upper pipe 1 and support the lateral roots of the plant with the support component 33. 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, by using detection equipment to obtain the soil moisture content and liquid flow direction inside the two pipes 1, the influence of different soil environments on plant hydraulic redistribution can be determined.

[0039] It should be noted that, in order to prevent soil from leaking out of pipe 1, gravel should be placed on the top of the bottom layer 7 and the top partition 51 before filling the soil; during the soil backfilling process, the soil should be compacted with stones while backfilling to make the soil density similar to the field conditions.

[0040] In this embodiment, as a further optimization, please refer to... Figure 1 and Figure 2 A through hole is provided on the side wall of pipe 1, and an observation tube 2 is inserted into the through hole. Both the observation tube 2 and pipe 1 are transparent organic glass tubes. The instrument is inserted into 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 pipe 1 is wrapped with a light-blocking cloth. Because the growth of plant roots is very sensitive, the light-blocking cloth is used to protect the growth of plants. The light-blocking cloth is removed during the regular inspection.

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

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

[0043] In this embodiment, as a further optimization, please refer to... Figure 2 and Figure 3 A sealing element 6 is provided inside the opening 53; the sealing element 6 includes an installation ring 61 and an annular airbag 62 provided on the inner side wall of the installation ring 61; after the plant roots pass through the opening 53, the annular airbag 62 is fitted on the outer wall of the plant's main root, which serves to block the connection between the upper and lower pipes 1.

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

[0045] In this embodiment, as a further optimization, please refer to... Figure 1 and Figure 2 Pipe 1 includes two arc-shaped tubes 101, which divide pipe 1 into two halves, making it easier to install plants into pipe 1 and making it easier for positioning component 3 to fix and support plants. After fixing the plants, the two arc-shaped tubes 101 are put together. The kit 52 is provided with fasteners 4, which include fastening straps and bolts, for fixing the two arc-shaped tubes 101 together and to the kit 52, and can also seal the gap between pipe 1 and kit 52.

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

Claims

1. A research device for plant hydraulic redistribution, characterized in that: include: Two pipes (1) and a separator (5); The separator (5) includes a kit (52) and two partitions (51) disposed within the kit (52). There is a gap between the two partitions (51). The two pipes (1) are distributed vertically and inserted into the two ends of the kit (52) respectively. The lower pipe (1) is provided with a bottom layer (7). Both the bottom layer (7) and the upper partition (51) are provided with drainage holes. The two partitions (51) are provided with openings (53). The openings (53) are used to allow part of the roots of the plant planted in the upper pipe (1) to enter the interior of the lower pipe (1). Both of the pipes (1) are equipped with positioning components (3) and detection equipment. The detection equipment is used to detect the water content of the soil inside the pipe (1) and the direction of liquid flow. The positioning component (3) includes a column (31) and a clamping component (32) and a supporting component (33) provided on the column (31). The clamping component (32) is used to fix the main root of the plant, and the supporting component (33) is used to support the lateral roots of the plant. A sealing element (6) is provided inside the opening (53); The sealing element (6) includes an installation ring (61) and an annular airbag (62) on the inner wall of the installation ring (61). After the plant roots pass through the opening (53), the annular airbag (62) is fitted on the outer wall of the plant's main root, which serves to block the connection between the upper and lower pipes (1).

2. The research apparatus for plant hydraulic redistribution according to claim 1, characterized in that: The clamping assembly (32) includes a movable block (321) slidably mounted on the column (31), two telescopic arms (322) hinged to the movable block (321), and a pressure block (323) mounted on the movable end of the telescopic arms (322).

3. The research device for plant hydraulic redistribution according to claim 1, characterized in that: There are several support components (33), and several support components (33) are sequentially arranged on the column (31) along the length extension direction of the column (31). The support component (33) includes a rotating shaft (331) and a mounting sleeve (332) provided on the rotating shaft (331). The mounting sleeve (332) is used to insert the support rod.

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

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

6. The research apparatus for plant hydraulic redistribution according to claim 1, characterized in that: The pipe (1) includes two arc-shaped pipes (101); The kit (52) is provided with fasteners (4) to fix the two arc tubes (101) to the kit (52).

7. A method for studying plant hydraulic redistribution, utilizing a plant hydraulic redistribution research apparatus as described in any one of claims 1-6, characterized in that: Includes the following steps: S1: Place the lower part of the plant root system inside the lower pipe (1), fix the main root of the plant with the clamping component (32), support the lateral roots of the plant with the support component (33), fill with soil, install the separator (5) above the lower pipe (1), and let the plant pass through the opening (53). Then install the upper pipe (1) on the separator (5), fix the main root of the plant inside the upper pipe (1) with the clamping component (32), support the lateral roots of the plant with the support component (33), and fill with soil. S2: By using detection equipment to obtain the soil moisture content and liquid flow direction inside the two pipes (1), the influence of different soil environments on plant hydraulic redistribution can be obtained.

8. The method for studying plant hydraulic redistribution according to claim 7, characterized in that: The bottom of the inner cavity of the pipe (1) is filled with gravel, and the pipe (1) is compacted with stones while backfilling the soil.

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