Screen cover embryo direct seeding device and method for mangrove artificial forest cultivation

Abstract

The present invention provides a screen cover embryo direct seeding device and method for artificial mangrove forest cultivation, comprising a grid-like screen cover component and a fixed plug rod, the grid-like screen cover component is a grid-like cover body woven from transverse and longitudinal strip-shaped sheets, and the periphery of the grid-like screen cover component forms a cover edge, the top end of the fixed plug rod is fixed on the cover edge, the lower end of the fixed plug rod is used to be inserted into the tidal flat, and a holding space is formed between the grid-like screen cover component and the tidal flat, and a plurality of mature embryos are arranged in the holding space. The present invention artificially creates an embryo implantation window by using a screen cover component, thereby enhancing the resistance of embryos and seedlings to hydrodynamics. At the same time, the screen cover structure plays a role in fixing embryos on the tidal flat, slowing down the effect of hydrodynamics on embryos, reducing the damage of benthic animals to embryos and seedlings, and eliminating the seedling cultivation process, which can greatly reduce the cost of artificial mangrove cultivation.

Description

Technical Field

[0001] The invention relates to the technical field of mangrove planting, and in particular to a screen cover embryo direct seeding device and method for mangrove artificial afforestation. Background Art

[0002] Mangroves are fragile plants that grow in tropical and subtropical intertidal zones. Due to rising sea levels and high-intensity human activities, more than half of the mangrove plants in the world have been lost compared to the last century. However, mangroves have a high carbon sink and a high ability to capture sediment and promote siltation to raise the tidal flat surface, which can effectively mitigate global warming and protect the coast from drowning due to rising sea levels, and therefore have attracted attention from countries around the world. The protection of mangroves and the restoration of their ecology have received unprecedented attention.

[0003] The "Special Action Plan for Mangrove Protection and Restoration (2020-2025)" of the State Forestry and Grassland Administration of the Ministry of Natural Resources requires that by 2025, 9,050 hectares of mangroves will be created and 9,750 hectares of existing mangroves will be restored. The southern coastal provinces and cities have also successively issued local regulations and laws such as the Mangrove Resource Protection Regulations, the Mangrove Protection and Restoration Special Action Plan, and the Mangrove Resource Protection Plan to implement management and protection responsibilities. This shows the importance that the state and government departments attach to mangrove protection and ecological restoration, and also shows how arduous and urgent the task is.

[0004] At present, for mangrove plant species with short embryos, such as Aegiceras corniculata and Avicennia marina, mangrove embryos cannot implant naturally due to the tidal flat environment with suitable elevation but excessive hydrodynamics. In order to solve the above defects, a new planting method is urgently needed to meet the needs of mangrove embryos that cannot implant naturally. Summary of the invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a screen cover embryo direct seeding device and method for mangrove artificial forest cultivation.

[0006] A method for direct seeding embryos with a screen cover in mangrove artificial afforestation provided by the present invention comprises the following steps:

[0007] S1: Weaving a mesh screen cover component with strip-shaped thin sheets, wherein a cover edge is woven around the periphery of the mesh screen cover component;

[0008] S2: fixing a plurality of fixed rods on the cover edge;

[0009] S3: fixing the grid-shaped screen cover member on the tidal flat by the fixing rods, thereby forming a receiving space between the tidal flat and the grid-shaped screen cover member, and placing the mature embryos in the receiving space, wherein the end surface of the cover edge is flush with the tidal flat surface or extends below the tidal flat surface;

[0010] S4: After the mature embryo develops into a seedling, it extends out from the grid of the grid-like screen cover component.

[0011] According to the present invention, a screen cover embryo direct seeding device for artificial mangrove forest cultivation comprises a grid-like screen cover component and a fixed plug rod, wherein the grid-like screen cover component is a grid-like cover body woven with transverse and longitudinal strip sheets, and the periphery of the grid-like screen cover component extends toward the same side to form a cover edge, the top end of the fixed plug rod is fixed on the cover edge, and the lower end of the fixed plug rod extends to the bottom of the grid-like screen cover component for being inserted into the interior of the tidal flat to fix the entire grid-like screen cover component on the tidal flat, and a accommodating space is formed between the grid-like screen cover component and the tidal flat, in which a plurality of mature embryos are evenly or unevenly arranged.

[0012] Preferably, in a tidal flat environment where the hydrodynamic force is too strong, the grid-like screen cover member does not allow the mature embryos to leave the accommodating space.

[0013] Preferably, the tidal flat environment with excessive hydrodynamic force is a tidal flat water flow environment with a maximum flow velocity exceeding 0.5 m / s and a maximum wave height exceeding 0.1 m.

[0014] Preferably, the grid-like screen cover component is square or circular when viewed from top.

[0015] Preferably, a plurality of evenly arranged fixing rods are disposed on the cover edge corresponding to each side of the square.

[0016] Preferably, the cover edge is a continuously arranged annular structure.

[0017] Preferably, the end of the fixed insertion rod is a tapered structure.

[0018] Preferably, the strip-shaped sheets are made of bamboo strips or plastic sheets.

[0019] Preferably, the grid size is 0.5 cm to 1 cm, the width of the strip-shaped sheet is 0.5 cm to 1 cm, and the height of the fixed rod is 5 cm to 10 cm.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention adopts auxiliary measures to artificially create an embryo implantation window through a screen cover component, thereby enhancing the resistance of embryos and seedlings to hydrodynamics and promoting rapid forestation of artificial afforestation. At the same time, the screen cover structure plays a role in fixing embryos on tidal flats, slowing down the effect of hydrodynamics on embryo scouring, reducing the damage of benthic animals (crabs, pots, etc.) to embryos and seedlings, and artificially assisting in creating a forest-friendly environment. At the same time, the embryo direct seeding method is adopted to omit the seedling raising process, which can greatly reduce the cost of artificially cultivating mangroves.

[0022] 2. The present invention adopts embryo direct seeding, which eliminates the transplantation and planting process, avoids the risk of reduced survival rate due to root damage during the transplantation of mangrove seedlings, simplifies the artificial afforestation process, can greatly improve the success rate of artificial afforestation, and reduce the later seedling supplementation; reduces the human damage to the tidal flat environment, which is conducive to the healthy development of mangroves in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 It is a schematic top view of the structure of the grid-shaped screen cover component in the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the grid-shaped screen cover component from the side;

[0026] Figure 3 It is a schematic diagram of the side section of the structure when the grid-shaped screen cover component is fixed on the tidal flat;

[0027] Figure 4 It is a schematic diagram of the structure of the grid-shaped screen cover component when viewed from above the tidal flat;

[0028] Figure 5 It is a top view schematic diagram of the mesh surface of the mesh screen cover component after weaving.

[0029] The figure shows:

[0030] Grid-shaped screen cover component 1

[0031] Mature embryo 2

[0032] Tidal flat 3

[0033] Fixed rod 4

[0034] Cover edge 5

[0035] Accommodation space 6 DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0037] Embodiment 1:

[0038] For some tidal flat environments with high altitude suitable for planting mangroves but with strong water dynamics, mangrove plant species with short embryos, such as Aegiceras corniculata and Avicennia marina, cannot naturally implant and thus cannot develop into seedlings. The present invention provides a screen cover embryo direct seeding method for artificial mangrove forest cultivation, comprising the following steps:

[0039] S1: Weaving a mesh screen cover component 1 with strip-shaped thin sheets, wherein a cover edge 5 is woven around the periphery of the mesh screen cover component 1;

[0040] S2: A plurality of fixed plug rods 4 are fixed on the cover edge 5, wherein the upper ends of the fixed plug rods 4 are fixed on the cover edge 5, and the lower ends of the fixed plug rods 4 extend downward from the cover edge 5, and the grid-shaped screen cover component 1 can be fixed by inserting the lower ends of the fixed plug rods 4 on the tidal flat 3;

[0041] S3: fixing the grid-shaped mesh cover member 1 on the tidal flat 3 by fixing the plug rod 4, thereby forming a receiving space 6 between the tidal flat 3 and the grid-shaped mesh cover member 1, and placing the mature embryo 2 into the receiving space 6, wherein the end surface of the cover edge 5 is flush with the surface of the tidal flat 3 or extends below the surface of the tidal flat 3;

[0042] S4: After the mature embryos 2 develop into seedlings, they extend out from the mesh of the mesh screen cover component 1.

[0043] The present invention also provides a screen cover embryo direct seeding device for mangrove artificial forest cultivation, such as Figure 1 , Figure 2 As shown, it includes a grid-like screen cover component 1 and a fixed plug rod 4. The grid-like screen cover component 1 is a grid-like cover body woven with transverse and longitudinal strip sheets. The strip sheets can be made of bamboo strips or plastic sheets. The periphery of the grid-like screen cover component 1 extends toward the same side to form a cover edge 5 so that the grid-like screen cover component 1 as a whole has a groove-like structure. The top end of the fixed plug rod 4 is fixed on the cover edge 5 and the height does not exceed the grid surface of the grid-like screen cover component 1. The fixed plug rod 4 is preferably perpendicular to the grid surface of the grid-like screen cover component 1. The lower end of the fixed plug rod 4 extends to the bottom of the grid-like screen cover component 1, which is used to be inserted into the interior of the tidal flat 3 to fix the entire grid-like screen cover component 1 on the tidal flat 3. A accommodating space 6 is formed between the grid-like screen cover component 1 and the tidal flat 3, and a plurality of mature embryos 2 are evenly or unevenly arranged in the accommodating space 6.

[0044] Specifically, the cover edge 5 is formed by bending the ends of the strip sheets on the mesh surface of the mesh screen cover component 1 and weaving them together with the strip sheets. The cover edge 5 is a dense structure without mesh gaps, that is, the transverse strip sheets and the longitudinal strip sheets are seamlessly woven, which can increase the promoting effect of the accommodating space 6.

[0045] The mature embryo 2 is placed between the grid-like screen cover component 1 and the tidal flat 3. In the tidal flat environment with strong hydrodynamic force, the water flow hits the cover edge 5 and the grid surface and enters the interior of the accommodation space. The flow rate of the water flow is buffered and slowed down to a certain extent, which is conducive to the implantation of the mature embryo 2 on the beach surface. At the same time, the grid-like screen cover component 1 does not allow the mature embryo 2 to leave the accommodation space 6, that is, the size of the grid on the grid-like screen cover component 1 should be slightly smaller than the outer diameter of the mature embryo 2, so that the mature embryo 2 can be constrained by the grid-like screen cover component 1 in the interior of the accommodation space 6 even under the impact of the water flow; in addition, the top of the mature embryo 2 arranged between the grid-like screen cover component 1 and the tidal flat 3 is squeezed by the screen, so that a certain amount of squeezing is also formed between the bottom and the beach surface. Therefore, when the water flow impacts, the mature embryo 2 is squeezed by the grid-like screen cover component 1 and the tidal flat 3, so that when the water flow impacts the mature embryo 2, the mature embryo 2 has a lateral friction force, which is more conducive to the implantation of the mature embryo 2, enhances the resistance of the embryo and the seedling to hydrodynamic force, and promotes the efficiency of artificial forest cultivation.

[0046] It should be noted that the non-forestation-friendly beach in the present invention is preferably a tidal flat with excessively strong hydrodynamics. The tidal flat environment with excessively strong hydrodynamics is a tidal flat water flow environment with a maximum flow rate exceeding 0.5 m / s and a maximum wave height exceeding 0.1 m. In this environment, the mature embryo 2 in a natural state cannot implant naturally due to the impact of the water flow. The device designed by the present invention can, on the one hand, decelerate the water flow in the accommodating space 6, and on the other hand, constrain the mature embryo 2 on the beach surface corresponding to the accommodating space 6. The cover edge 5 is preferably a continuously arranged annular structure. Due to the joint action of the cover edge 5 and the grid surface, the entire grid-like screen cover component 1 has a certain promoting effect, which provides a suitable tidal flat environment for the implantation of the mature embryo 2. Therefore, the present invention can slow down the flow rate of hydrodynamics and thus reduce the impact on the mature embryo 2, so that the mature embryo 2 attached to the tidal flat 3 will not be washed away by the water flow with weak hydrodynamics, thereby improving the success rate of embryo implantation. The effect of mangrove embryo implantation in a non-forestation-friendly strong hydrodynamic environment is achieved by artificially assisting the creation of a suitable forest environment.

[0047] In order to increase the firmness of the mesh screen cover component 1 after weaving, the transverse and longitudinal strip sheets should be woven crosswise, the first transverse strip sheet first passes through the outer side of the first longitudinal strip sheet, then passes through the inner side of the second longitudinal strip sheet, then passes through the outer side of the third longitudinal strip sheet, ..., the second transverse strip sheet is inserted in the opposite position to the first transverse strip sheet, such as Figure 5 shown.

[0048] Specifically, the mesh screen cover component 1 can be designed in a variety of shapes, such as a square, a regular polygon, a rectangle or a circle when viewed from above, and can be flexibly designed according to the actual situation of the tidal flat 3. Taking a square as an example, a plurality of evenly arranged fixed plug rods 4 are arranged on the cover edge 5 corresponding to each side of the square, for example, 3, 4 or 5 fixed plug rods are arranged.

[0049] In order to facilitate fixing the grid-shaped screen cover component 1 on the tidal flat 3, the end of the fixed insertion rod 4 is a conical structure, which is easy to operate and can improve the planting efficiency.

[0050] Specifically, the grid size is 0.5 cm to 1 cm, the width of the strip sheet is 0.5 cm to 1 cm, and the height of the fixed insertion rod 4 is 5 cm to 10 cm.

[0051] Embodiment 2:

[0052] This embodiment is a preferred example of Embodiment 1.

[0053] In this embodiment, the grid-like screen cover component 1 is a square when viewed from above, the strip-like thin sheets are bamboo strips, the grid of the grid-like screen cover component 1 is a square, the grid size is 0.8×0.8㎝, the width of the bamboo strips is 0.8㎝, the height of the fixed rod 4 is 8㎝, and the height of the mesh edge 5 is 5㎝.

[0054] The insert principle of the present invention is as follows:

[0055] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, first, robust and mature embryos 2 are selected for use;

[0056] Secondly, a mesh screen cover component 1 with a mesh of about 0.5 cm to 1 cm is woven with bamboo strips of about 0.5 cm in width, and the mesh screen cover component 1 has a mesh edge 5 of about 5 cm in height around it, and each side of the mesh screen cover component 1 is pre-installed with 3 fixed rods 4 of about 2 cm in width and about 10 cm in length;

[0057] Thirdly, the elevation of the tidal flat environment for planting can meet the growth needs of mangroves, but the tidal flat with too strong water dynamics is not suitable for forestry. The grid-like screen cover component 1 is naturally and randomly inserted on the relatively flat beach surface, and the fixed insertion rod 4 is inserted below the tidal flat beach surface so that the net edge 5 is flush with the beach surface or a small part of the bottom end of the net edge 5 is below the beach surface, and the grid surface of the grid-like screen cover component 1 is located above the beach surface.

[0058] Finally, the spare mangrove mature embryos 2 are placed on the beach, and 10 to 15 embryos are randomly placed on the beach corresponding to each mesh screen cover component 1. Figure 1As shown, the mesh screen cover component 1 is fixed on the tidal flat by fixing the plug rod 4. Then, the radicle germinates and penetrates into the tidal flat 3 in about 7 days, the embryo germinates in about 15 days, and can extend from the top opening mesh in about 30 days, completing the seedling development process.

[0059] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, 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 referred device or element 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.

[0060] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A screen cover embryo direct seeding device for mangrove artificial afforestation, characterized in that: The invention comprises a grid-like mesh cover component (1) and a fixing rod (4), wherein the grid-like mesh cover component (1) is a grid-like cover body woven from transverse and longitudinal strip-shaped sheets, and the periphery of the grid-like mesh cover component (1) extends toward the same side to form a cover edge (5), the top end of the fixing rod (4) is fixed on the cover edge (5), and the lower end of the fixing rod (4) extends to the bottom of the grid-like mesh cover component (1) and is used to be inserted into the interior of a tidal flat (3) to fix the entire grid-like mesh cover component (1) on the tidal flat (3), and a receiving space (6) is formed between the grid-like mesh cover component (1) and the tidal flat (3), and a plurality of mature embryos (2) are evenly or unevenly arranged in the receiving space (6); The cover edge (5) is formed by bending the ends of the strip sheets on the mesh surface of the mesh screen cover component (1) and weaving them together with the strip sheets. The cover edge (5) is a continuously arranged annular structure. The cover edge (5) is a seamlessly woven structure of transverse strip sheets and longitudinal strip sheets, thereby forming a dense structure without mesh gaps. The transverse strip sheets and longitudinal strip sheets are cross-woven. The first transverse strip sheet first passes through the outer side surface of the first longitudinal strip sheet, then passes through the inner side surface of the second longitudinal strip sheet, and then passes through the outer side surface of the third longitudinal strip sheet. The second transverse strip sheet is inserted at the opposite position to the first transverse strip sheet. The mature embryo (2) is placed between the grid-shaped screen cover component (1) and the tidal flat (3). In a tidal flat environment with strong hydrodynamics, the water flow hits the cover edge (5) and the grid surface and enters the accommodation space. The flow rate of the water flow is buffered and slowed down, which is conducive to the implantation of the mature embryo (2) on the beach surface. The top of the mature embryo (2) arranged between the grid-shaped screen cover component (1) and the tidal flat (3) is squeezed by the screen, so that a certain amount of squeezing is also formed between the bottom and the beach surface. When the mature embryo (2) is squeezed by the grid-shaped screen cover component (1) and the tidal flat (3), the mature embryo (2) has a lateral friction force when the water flow impacts the mature embryo (2), which is more conducive to the implantation of the mature embryo (2). When the grid-shaped screen cover component (1) is inserted, the fixed insertion rod (4) is inserted below the tidal flat surface so that the mesh edge (5) is flush with the beach surface or the bottom end of the mesh edge (5) is below the beach surface, and the mesh surface of the grid-shaped screen cover component (1) is located above the beach surface; The grid-shaped screen cover component (1) does not allow the mature embryo (2) to leave the accommodation space (6), and the tidal flat environment with excessive hydrodynamic force is a tidal flat water flow environment with a maximum flow rate exceeding 0.5 m / s and a maximum wave height exceeding 0.1 m.

2. The live broadcast device according to claim 1, characterized in that: The grid-shaped screen cover component (1) is square or circular when viewed from above.

3. The live broadcast device according to claim 2, characterized in that: A plurality of evenly arranged fixed insertion rods (4) are disposed on the cover edge (5) corresponding to each side of the square.

4. The live broadcast device according to claim 1, characterized in that: The end of the fixed insertion rod (4) is a conical structure.

5. The live broadcast device according to claim 1, characterized in that: The strip-shaped thin sheets are made of bamboo strips or plastic sheets.

6. The live broadcast device according to claim 2, characterized in that: The size of the grid is 0.5 cm to 1 cm, the width of the strip-shaped sheet is 0.5 cm to 1 cm, and the height of the fixed insertion rod (4) is 5 cm to 10 cm.

7. A method for direct seeding embryos with a screen cover in mangrove artificial afforestation, characterized in that: The device according to any one of claims 1 to 6 comprises the following steps: S1: using strip-shaped thin sheets to weave a mesh-shaped screen cover component (1), wherein a cover edge (5) is woven around the periphery of the mesh-shaped screen cover component (1); S2: fixing a plurality of fixed rods (4) on the cover edge (5); S3: The grid-shaped screen cover component (1) is fixed on the tidal flat (3) by means of the fixing rod (4), thereby forming a receiving space (6) between the tidal flat (3) and the grid-shaped screen cover component (1), and the mature embryo (2) is placed in the receiving space (6), wherein the end surface of the cover edge (5) is flush with the surface of the tidal flat (3) or extends below the surface of the tidal flat (3); S4: After the mature embryos (2) develop into seedlings, they extend out from the mesh of the mesh-shaped screen cover component (1).

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