Research device for plant root system growth in heterogeneous nutrient environment

Abstract

The utility model discloses a plant root system heterogeneous nutrient environment growth research device which comprises a planting box, a first nutrient unit, a second nutrient unit and a third nutrient unit are arranged at the bottom of the planting box, a planting area for planting plants is further arranged in the planting box, and the first nutrient unit, the second nutrient unit and the third nutrient unit are sequentially arranged. A nutrient-free first clearance area and a nutrient-free second clearance area are arranged at the junctions of the adjacent nutrient units respectively, and the planting area comprises a first planting area located in the first clearance area and a second planting area located in the second clearance area. Different nutrient environments are simulated by arranging the nutrient units, the first clearance area and the second clearance area are located at the adjacent nutrient junction, and the first planting area and the second planting area are located at the first clearance area and the second clearance area respectively. Plant root systems in the first planting area and the second planting area can respectively extend to two adjacent nutrient units to absorb nutrients, and the difference and preference of the plants on nutrient absorption are obtained according to the growth conditions of the plants.

Description

Technical Field

[0001] The present application belongs to the technical field of plant foraging ability research experiments, and specifically relates to a research device for the growth of plant roots in a heterogeneous nutrient environment. Background Art

[0002] Forest trees are the general term for all trees in the forest. They are the main body of the forest, determine the forest's appearance and basic internal characteristics, economic and ecological value, and are the main objects of forest management.

[0003] Forests are biological communities dominated by trees, including trees, shrubs, herbaceous plants and other organisms, occupying a considerable space and significantly affecting the surrounding environment. Therefore, comparative and quantitative research on the foraging capacity of trees will help develop and utilize forest plant resources and is of great significance for the management and utilization of marginal land.

[0004] Heterogeneous nutrient environments are common in forests and trees. Existing research on tree nutrient absorption and utilization strategies is mostly focused on homogeneous nutrient environments. The research results obtained cannot represent the environment of highly spatiotemporal heterogeneous nutrient distribution in forest soils under natural conditions. Therefore, further research is needed on the differences in root nutrient absorption and utilization in heterogeneous nutrient environments and the interspecies relationships and root growth characteristics under mixed forest models, which will help to achieve better growth and cultivation of forest plants based on root growth characteristics. Utility Model Content

[0005] The present application provides a research device for the growth of plant roots in a heterogeneous nutrient environment, so as to realize the differences in root nutrient absorption and utilization of trees in a heterogeneous nutrient environment and the interspecific relationships and root growth characteristics in a mixed forest model.

[0006] The technical solution adopted in this application is:

[0007] A research device for the growth of plant roots in a heterogeneous nutrient environment comprises a planting box, wherein a first nutrient unit, a second nutrient unit and a third nutrient unit are arranged at the bottom of the planting box, and a planting area for planting plants is also provided in the planting box, wherein the first nutrient unit, the second nutrient unit and the third nutrient unit are arranged in sequence, and a first nutrient-free air avoidance area and a second air avoidance area are respectively provided at the junctions of adjacent nutrient units, and the planting area comprises a first planting area located in the first air avoidance area and a second planting area located in the second air avoidance area.

[0008] In a preferred implementation of a research device for the growth of plant roots in a heterogeneous nutrient environment, the first nutrient unit includes culture patch A, the second nutrient unit includes culture patch B, the third nutrient unit includes culture patch C, and the first planting area and the second planting area include at least plant A.

[0009] In a preferred implementation of a device for studying the growth of plant roots in a heterogeneous nutrient environment, the first planting area and the second planting area also include plant B.

[0010] In a preferred implementation of a research device for plant root growth in a heterogeneous nutrient environment, culture patches A and culture patches C have the same nutrient composition but different nutrient ratios.

[0011] In a preferred implementation of a research device for plant root growth in a heterogeneous nutrient environment, the nutrient compositions of culture patches A and culture patches C are different.

[0012] In a preferred implementation of a research device for the growth of plant roots in a heterogeneous nutrient environment, the second nutrient unit is provided with a baffle plate, and the first air-avoiding area and the second air-avoiding area are provided with a glass fiber mesh.

[0013] In a preferred implementation of a research device for plant root growth in a heterogeneous nutrient environment, the baffle is a transparent acrylic plate and the baffle is equidistant from the first nutrient unit and the third nutrient unit, and the height of the baffle is at least equal to the height of the planting box.

[0014] In a preferred implementation of a research device for the growth of plant roots in a heterogeneous nutrient environment, the areas of the first nutrient unit, the second nutrient unit and the third nutrient unit are equal, the areas of the first air avoidance zone and the second air avoidance zone are equal, and the areas of the first planting zone and the second planting zone are equal.

[0015] In a preferred implementation of a research device for the growth of plant roots in a heterogeneous nutrient environment, the area of ​​the first avoidance zone, and / or the first planting zone located in the first nutrient unit and the area of ​​the second nutrient unit are equal; the area of ​​the second avoidance zone, and / or the second planting zone located in the second nutrient unit and the area of ​​the third nutrient unit are equal.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0017] By setting up each nutrient unit to simulate different nutrient environments, the first air-avoidance zone and the second air-avoidance zone are located at the junction of adjacent nutrients, and the first planting area and the second planting area are located in the first air-avoidance zone and the second air-avoidance zone respectively, that is, the plant roots in the first planting area and the second planting area can extend to the two adjacent nutrient units respectively to absorb nutrients, and according to the growth conditions of the plants in the first planting area and the second planting area, the differences and preferences of the plants for nutrient absorption can be obtained. In addition, if the nutrient units are arranged in sequence, the nutrient units are independent of each other, and the first planting area and the second planting area are located in the first air-avoidance zone and the second air-avoidance zone respectively, there are no nutrients in the planting area, so that more intuitive and accurate results can be obtained.

[0018] In addition, in addition to being able to study and analyze the root nutrient utilization of a single plant, the research device of the present application scheme can also study and analyze the interspecific relationships between different plant species. By planting plant A and plant B in both the first planting area and the second planting area, on the one hand, the degree of absorption and utilization of certain nutrients by plant A and plant B can be compared through the plant growth conditions. On the other hand, the plant growth conditions can be used to determine which nutrients are more suitable for the mixed planting of plant A and plant B. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of a research device in one embodiment of the utility model;

[0021] Figure 2 It is a top view of a research device in one embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1-planting box, 11-first nutrient unit, 12-second nutrient unit, 13-third nutrient unit, 14-first air avoidance area, 15-second air avoidance area, 16-first planting area, 17-second planting area, 18-blocking board, 19-fiberglass mesh. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0026] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0029] The present application provides a research device for the growth of plant roots in a heterogeneous nutrient environment, such as Figure 1 , Figure 2 As shown, it includes a planting box 1, a first nutrient unit 11, a second nutrient unit 12 and a third nutrient unit 13 are provided at the bottom of the planting box 1, and a planting area for planting plants is also provided in the planting box 1. The first nutrient unit 11, the second nutrient unit 12 and the third nutrient unit 13 are arranged in sequence, and a first nutrient-free air avoidance area 14 and a second air avoidance area 15 are respectively provided at the junction of adjacent nutrient units. The planting area includes a first planting area 16 located in the first air avoidance area 14 and a second planting area 17 located in the second air avoidance area 15.

[0030] By setting up each nutrient unit to simulate a different nutrient environment, the first air avoidance zone 14 and the second air avoidance zone 15 are located at the junction of adjacent nutrients, and the first planting area 16 and the second planting area 17 are respectively located in the first air avoidance zone 14 and the second air avoidance zone 15, that is, the plant roots in the first planting area 16 and the second planting area 17 can extend to the two adjacent nutrient units to absorb nutrients, respectively. According to the growth conditions of the plants in the first planting area 16 and the second planting area 17, the differences and preferences of the plants for nutrient absorption can be obtained. In addition, if the nutrient units are arranged in sequence, the nutrient units are independent of each other, and the first planting area 16 and the second planting area 17 are respectively located in the first air avoidance zone 14 and the second air avoidance zone 15, then there are no nutrients in the planting area, so that more intuitive and accurate results can be obtained.

[0031] In one embodiment, the first nutrient unit 11 includes a culture patch A, the second nutrient unit 12 includes a culture patch B, the third nutrient unit 13 includes a culture patch C, and the first planting area 16 and the second planting area 17 include at least plant A.

[0032] The plants in the first planting area 16 have a tendency to forage for food in patches A and B, and in the second planting area 17 have a tendency to forage for food in patches C and B. The difference in the foraging ability of the plants in patches A and C can be determined through the growth of the plants.

[0033] As an example of this implementation:

[0034] The nutrient compositions of culture patch A and culture patch C are the same but the nutrient ratios are different. The ratio of ammonium to nitrate nitrogen in patch A is 2:8, and the ratio of ammonium to nitrate nitrogen in patch C is 8:2. Then, through the growth of plant A in the first planting area 16 and the second planting area 17, it can be obtained that the root system of plant A has a stronger ability to forage for nutrients under which nutrient ratio, thereby obtaining a heterogeneous nutrient growth environment more suitable for plant A.

[0035] As another example under this implementation mode:

[0036] The nutrient composition of the culture patch A is different from that of the culture patch C. Through the growth of the plant A in the first planting area 16 and the second planting area 17, it can be obtained which nutrient the root system of the plant A has a stronger ability to forage for.

[0037] In addition, it can be understood that the above two embodiments can be used in combination. For example, the research device can first be used to determine which nutrients the root system of plant A has a stronger ability to forage for, and then the composition ratio of nutrients with growth advantages can be further changed to study which ratio is more suitable for the root system of plant A to forage for growth under this nutrient composition.

[0038] In another embodiment, the first planting area 16 and the second planting area 17 further include plant B.

[0039] In addition to studying and analyzing the root nutrient utilization of a single plant, the research device of the present application scheme can also study and analyze the interspecific relationships between different plant species. By planting plant A and plant B in the first planting area 16 and the second planting area 17, on the one hand, the degree of absorption and utilization of certain nutrients by plant A and plant B can be compared through the plant growth conditions. On the other hand, it can be determined through the plant growth conditions which nutrients are more suitable for the interplanting of plant A and plant B.

[0040] As an example of this implementation:

[0041] The nutrient composition of the culture patch A and the culture patch C is the same but the nutrient ratio is different. Plant A and plant B are mixed in the first planting area 16 and the second planting area 17 respectively. Through the growth of plant A and plant B in the first planting area 16 and the second planting area 17, on the one hand, through the overall growth of plant A and plant B, it can be obtained which nutrient ratio is more suitable for the mixed planting of plant A and plant B, and on the other hand, through the growth of plant A and plant B, it can be obtained that under the same nutrient composition, plant A and plant B have stronger foraging competition ability for which element.

[0042] As another example under this implementation mode:

[0043] The nutrient composition of the culture patch A is different from that of the culture patch C. Plant A and plant B are mixed in the first planting area 16 and the second planting area 17, respectively. By the overall growth of plant A and plant B in the first planting area 16 and the second planting area 17, it is determined which nutrient is more conducive to the mixed planting of plant A and plant B. On the other hand, by comparing the growth conditions of plant A and plant B, it can be determined in which nutrient environment the root system competition ability of plant A and plant B is stronger.

[0044] In one embodiment, the second nutrient unit 12 is provided with a baffle plate 18 , and the first and second air-avoiding areas 14 and 15 are provided with glass fiber meshes 19 .

[0045] Preferably, the barrier plate 18 is a transparent acrylic plate and the distance between the barrier plate 18 and the first nutrient unit 11 and the third nutrient unit 13 is equal, and the height of the barrier plate 18 is at least equal to the height of the planting box 1. By using the transparent acrylic plate as the barrier plate 18, the above-ground space of the first planting area 16 and the second planting area 17 is divided, the above-ground competition of the plants is blocked, and the study of the possible underground competition of the plants is concentrated, so that the experimental research results are more accurate. And the fiberglass mesh 19 is used to ensure that each nutrient unit is independent of each other, and the air-avoiding area is free of nutrients, so that the nutrient absorption preference of the plant can be studied more intuitively.

[0046] Preferably, the areas of the first nutrient unit 11, the second nutrient unit 12 and the third nutrient unit 13 are equal, the areas of the first air avoidance zone 14 and the second air avoidance zone 15 are equal, and the areas of the first planting zone 16 and the second planting zone 17 are equal.

[0047] In one embodiment, the first avoidance zone 14 and / or the first planting zone 16 are located in the first nutrient unit 11 and in the second nutrient unit 12 with equal areas; the second avoidance zone 15 and / or the second planting zone 17 are located in the second nutrient unit 12 and in the third nutrient unit 13 with equal areas.

[0048] Preferably, the first air avoidance zone 14 and the first planting zone 16 are located in the first nutrient unit 11 and the second nutrient unit 12 with equal areas; the second air avoidance zone 15 and the second planting zone 17 are located in the second nutrient unit 12 and the third nutrient unit 13 with equal areas. It can be understood that the first nutrient unit 11, the second nutrient unit 12 and the third nutrient unit 13 mentioned here refer to the location of the air avoidance zone, and there are no nutrient patches in the air avoidance zone. By setting the control variables in this way, it is ensured that the cultivation conditions of the plants in the planting area are the same except for the nutrient variables, so as to ensure the effectiveness and accuracy of the experimental research results.

[0049] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0050] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0051] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A research device for plant root growth in a heterogeneous nutrient environment, characterized in that: It includes a planting box, wherein a first nutrient unit, a second nutrient unit and a third nutrient unit are provided at the bottom of the planting box, and a planting area for planting plants is also provided in the planting box, wherein the first nutrient unit, the second nutrient unit and the third nutrient unit are arranged in sequence, and a first nutrient-free air avoidance area and a second air avoidance area are respectively provided at the junctions of adjacent nutrient units, and the planting area includes a first planting area located in the first air avoidance area and a second planting area located in the second air avoidance area.

2. The research device for plant root growth in heterogeneous nutrient environment according to claim 1, characterized in that: The first nutrient unit includes a cultivation patch A, the second nutrient unit includes a cultivation patch B, the third nutrient unit includes a cultivation patch C, and the first planting area and the second planting area include at least plant A.

3. The research device for plant root growth in heterogeneous nutrient environment according to claim 2, characterized in that: The first planting area and the second planting area also include plant B.

4. A research device for plant root growth in a heterogeneous nutrient environment according to claim 2 or 3, characterized in that: The culture patch A and the culture patch C have the same nutrient composition but different nutrient ratios.

5. A research device for plant root growth in a heterogeneous nutrient environment according to claim 2 or 3, characterized in that: The nutrient compositions of the culture patch A and the culture patch C are different.

6. The research device for plant root growth in heterogeneous nutrient environment according to claim 1, characterized in that: The second nutrient unit is provided with a baffle plate, and the first air-avoiding area and the second air-avoiding area are provided with a glass fiber mesh.

7. The research device for plant root growth in heterogeneous nutrient environment according to claim 6, characterized in that: The baffle plate is a transparent acrylic plate and is equidistant from the first nutrient unit and the third nutrient unit. The height of the baffle plate is at least equal to the height of the planting box.

8. The research device for plant root growth in heterogeneous nutrient environment according to claim 1, characterized in that: The areas of the first nutrient unit, the second nutrient unit and the third nutrient unit are equal, the areas of the first air avoidance zone and the second air avoidance zone are equal, and the areas of the first planting zone and the second planting zone are equal.

9. The research device for plant root growth in heterogeneous nutrient environment according to claim 1, characterized in that: The first avoidance zone, and / or the first planting zone, are of equal area in the first nutrient unit and in the second nutrient unit; the second avoidance zone, and / or the second planting zone, are of equal area in the second nutrient unit and in the third nutrient unit.

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