Cylinder-type embryo seeding device and method for artificial afforestation of mangroves in unsuitable tidal flats

Abstract

The present invention provides a barrel-type embryo direct seeding device and method for artificial afforestation of mangroves in non-forestable tidal flats. The device comprises a bamboo barrel and a snap-on piece. A notch is cut in the radially inward direction on the outer side of the bamboo barrel to form a groove-type bamboo barrel sleeve. The notch is an inlet for placing mature embryos, and the length direction of the notch extends along the axial direction of the bamboo barrel. The lower end of the bamboo barrel is wedge-shaped, and a fixed seam is provided at a set distance from the top on the circumferential surface of the bamboo barrel, and the snap-on piece matches the fixed seam. When the mature embryo is placed inside the bamboo barrel through the notch, the mature embryo can be kept in the bamboo barrel by inserting the snap-on piece into the fixed seam. The present invention adopts the embryo direct seeding method through auxiliary measures, artificially creates an embryo implantation window, enhances the resistance of embryos and seedlings to hydrodynamics, promotes rapid forestation of artificial afforestation, eliminates the transplantation and planting process, simplifies the artificial afforestation links, improves the success rate of artificial afforestation, reduces late seedling supplementation, and can greatly reduce the cost of artificial cultivation of mangroves.

Description

Technical Field

[0001] The present invention relates to the technical field of mangrove planting, and in particular to a drum-type embryo direct seeding device and method for artificial afforestation of mangroves in non-suitable tidal flats. 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] However, since mangroves have long grown in intertidal zones where land and sea dynamics strongly converge, in some low and medium tidal flat environments with excessively strong hydrodynamics, due to the slightly low elevation of the tidal flat, mangrove embryos cannot naturally implant under the action of hydrodynamics, or after implantation, the mangrove embryos cannot develop into seedlings due to being immersed in water for too long, especially for mangrove plant species with longer embryos, such as Kandelia ovata, Rhizophora mangrove, and Bruguiera gymnorrhiza. In the prior art, the planting of mangroves in non-forestation environments is often achieved by transplanting seedlings, which often results in root damage, high cost, and cumbersome operation. In order to solve the above-mentioned defects, it is urgent to design a new planting method to meet the needs of planting in non-forestation beaches. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a cylinder-type embryo direct seeding device and method for artificial afforestation of mangroves in non-suitable tidal flats.

[0005] According to the present invention, a drum-type embryo direct seeding method for artificial afforestation of non-suitable tidal flat mangroves comprises the following steps:

[0006] S1: A notch is cut in the radially inward direction on the outer side of the bamboo tube to form a grooved bamboo tube sleeve, wherein the length direction of the notch extends along the axial direction of the bamboo tube, the lower end of the bamboo tube is cut into a wedge shape, a fixing seam is opened at a set distance from the top end on the circumferential surface of the bamboo tube, and a buckle piece matching the fixing seam is made;

[0007] S2: placing the prepared mature embryo into the bamboo tube through the notch and inserting the buckle piece into the fixing seam to fix the mature embryo in the bamboo tube;

[0008] S3: inserting the bamboo tube containing the mature embryo into the tidal flat, wherein the insertion depth of the bamboo tube is sufficient for the lower end of the mature embryo to contact the tidal flat surface.

[0009] According to the present invention, a barrel-type embryo direct seeding device for artificial afforestation of mangroves in non-forestable tidal flats comprises a bamboo barrel and a buckle sheet, wherein a notch is cut in the radially inward direction on the outer side of the bamboo barrel to form a groove-type bamboo barrel sleeve, wherein the notch is an inlet for placing mature embryos, and the length direction of the notch extends along the axial direction of the bamboo barrel;

[0010] The lower end of the bamboo tube is wedge-shaped, a fixing seam is provided on the circumferential surface of the bamboo tube at a set distance from the top end, and the buckle piece matches the fixing seam;

[0011] When a mature embryo is placed into the bamboo tube through the notch, the mature embryo can be retained in the bamboo tube by inserting the buckle piece into the fixing slit.

[0012] Preferably, the notch is in a fan-shaped structure along the axial direction, and the central angle of the fan-shaped structure ranges from 80° to 100°.

[0013] Preferably, the length of the bamboo tube ranges from 25 cm to 40 cm, and the diameter ranges from 1.5 cm to 3 cm.

[0014] Preferably, the planting density of the bamboo tubes is 5 to 9 plants / .

[0015] Preferably, the flooding duration of the middle and low tidal flats is 8 ~12 between.

[0016] Preferably, the set distance is 4 cm to 8 cm from the top of the bamboo tube.

[0017] Preferably, the angle between the opening direction of the fixing slit and the axial direction is , The value range is 30°~60°.

[0018] Preferably, the buckle piece is interference fit with the fixing seam.

[0019] Preferably, the top of the mature embryo is flush with the top of the bamboo tube.

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

[0021] 1. The present invention adopts the embryo direct seeding method through auxiliary measures to artificially create an embryo implantation window, enhance the resistance of embryos and seedlings to hydrodynamics, promote the rapid formation of artificial forests, and creatively direct seeding the embryos in a non-forestation-friendly environment, abandoning the thinking mode of planting seedlings in a non-forestation-friendly environment in the prior art, eliminating the transplantation and planting process, greatly simplifying the artificial forestry links, improving the success rate of artificial forestry, reducing the late seedling supplementation, and greatly reducing the cost of artificial cultivation of mangroves.

[0022] 2. The present invention adopts embryo direct seeding, which eliminates the process of tidal flat transformation by artificially adding soil to increase the elevation of the tidal flat, reduces the interference of human activities on the tidal flat, reduces the man-made damage to the tidal flat environment, and is conducive to the healthy development of mangroves in the later stage.

[0023] 3. The present invention can be used for artificial direct seeding and afforestation in lower tidal flats which are slightly lower than the front of suitable tidal flats, thereby increasing the potential tidal flat resources for mangrove afforestation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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:

[0025] Figure 1 This is a schematic diagram of the structure of a mature embryo fixed in a bamboo tube in the present invention;

[0026] Figure 2 It is a schematic diagram of the structure when the buckle piece is inserted into the bamboo tube;

[0027] Figure 3 for Figure 2 A schematic diagram of a local enlarged structure;

[0028] Figure 4 is the angle between the opening direction of the fixed slit and the axial direction of the bamboo tube Schematic diagram of the structure;

[0029] Figure 5 is a schematic diagram of the structure of the gap;

[0030] Figure 6 This is a schematic diagram of the structure of bamboo tubes when arranged on the tidal flat;

[0031] Figure 7 This is a schematic diagram of the arrangement of bamboo tubes on the tidal flat when looking down at the tidal flat;

[0032] Figure 8 It is a structural schematic diagram of a buckle piece;

[0033] Fig. 9 It is a top view schematic diagram of the snap-on piece on the bamboo tube.

[0034] The figure shows:

[0035] Bamboo tube 1

[0036] Gap 11

[0037] Fixed seam 12

[0038] Buckle piece 2

[0039] Buckle inner end surface 21

[0040] Mature embryo 3

[0041] Tidal flat 4 DETAILED DESCRIPTION

[0042] 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.

[0043] For some medium and low tidal flat environments with strong hydrodynamics, due to the slightly low tidal flats, mangrove plant species with longer embryos, such as Kandelia candel, Rhizophora rubrum, and Bruguiera gymnorrhiza, cannot naturally implant and develop into seedlings due to the interference of hydrodynamic conditions. The present invention provides a drum-type embryo direct seeding device for artificial afforestation of mangroves on non-suitable tidal flats, such as Figure 1 As shown, it includes a bamboo tube 1 and a buckle piece 2. The outer side of the bamboo tube 1 is cut into a notch 11 in the radial inward direction to form a groove-type bamboo tube sleeve, as shown in FIG. Figure 5 As shown, the notch 11 is the entrance for the mature embryo 3 to be smoothly placed inside the bamboo tube 1. At the same time, the notch 11 is conducive to the contact between the nutrients in the water body and the embryo as a whole, and the embryo can also directly adapt to the external salinity environment. Therefore, the design of the notch 11 is more conducive to the provision of nutrients in the water body. The notch 11 extends along the axial direction of the bamboo tube 1. The length of the notch 11 is the same as the length of the bamboo tube 1, or the length of the notch 11 is less than the length of the bamboo tube 1. Specifically, the length of the notch 11 is flexibly set based on the convenience of placing the mature embryo 3 inside the bamboo tube 1.

[0044] It should be noted that the excessive hydrodynamic force in the present invention refers to a tidal flat environment with a maximum flow rate exceeding 0.5 m / s and a maximum wave height exceeding 0.1 m. In addition, when the bamboo tube 1 is arranged on the tidal flat, the opening direction of the notch 11 is opposite to the main water flow direction of the high tide, which can protect the mature embryo 3 from being washed by the high and low tide flow and from being entangled by Enteromorpha, etc., and provide a suitable growth environment for the embryo.

[0045] The lower end of the bamboo tube 1 is wedge-shaped, which is convenient for insertion into the tidal flat 4, saving time and effort. A fixing seam 12 is provided at a set distance from the top of the bamboo tube 1 on the circumferential surface of the bamboo tube 1. The set distance is 4 cm to 8 cm from the top of the bamboo tube 1, preferably 5 cm. Figure 2 , Figure 3 , Figure 4As shown, the snap piece 2 matches the fixing seam 12. When the mature embryo 3 is placed into the bamboo tube 1 through the notch 11, the snap piece 2 is inserted into the fixing seam 12 so that the mature embryo 3 can be kept in the bamboo tube 1, thereby fixing the mature embryo 3 in the bamboo tube 1. When inserted into the tidal flat 4, it is not easy to be washed down by the tide. The snap piece 2 and the fixing seam 12 are interference fit, so that the snap piece 2 can be stably maintained on the fixing seam 12.

[0046] It should be noted that the end surface of the buckle piece 2 facing the inner side of the fixing seam 12 is the buckle inner end surface 21. Figure 8 As shown, in order to reduce the damage of the buckle piece 2 to the mature embryo 3, when the buckle piece 2 is inserted into the fixing slit 12, the buckle inner end surface 21 is a plane or an inner concave surface when viewed from the axial direction of the bamboo tube 1, so that the buckle piece 2 fixes the mature embryo 3 without causing damage to the mature embryo 3, and also does not affect the germination growth of the mature embryo 3. Fig. 9 shown.

[0047] The present invention provides a drum-type embryo direct seeding method for artificial afforestation of non-suitable tidal flat mangroves, comprising the following steps:

[0048] S1: A notch 11 is cut radially inwardly from the outer side of the bamboo tube 1 to form a grooved bamboo tube sleeve, the length direction of the notch 11 extends along the axial direction of the bamboo tube 1, the lower end of the bamboo tube 1 is cut into a wedge shape, a fixed seam 12 is opened at a set distance from the top of the circumferential surface of the bamboo tube 1, and a buckle piece 2 matching the fixed seam 12 is made, wherein the angle between the opening direction of the fixed seam 12 and the axial direction is , The value range of is 30°~60°, for example is 45°;

[0049] S2: placing the prepared mature embryo 3 into the bamboo tube 1 through the notch 11 and inserting the buckle piece 2 into the fixing seam 12 to fix the mature embryo 3 in the bamboo tube 1;

[0050] S3: inserting the bamboo tube 1 with the mature embryo 3 into the tidal flat 4, wherein the insertion depth of the bamboo tube 1 is sufficient for the lower end of the mature embryo 3 to contact the surface of the tidal flat 4, and the top of the mature embryo 3 is preferably flush with the top of the bamboo tube 1, wherein the flooding time of the tidal flat 4 is 8 ~12 between.

[0051] Specifically, the notch 11 is fan-shaped along the axial direction. Figure 5 As shown, the central angle of the sector is , The value range of is 80° to 100°, for example, it can be 85°, 90°, 95°, etc.

[0052] The length of the bamboo tube 1 ranges from 25 cm to 40 cm, for example, 30 cm or 35 cm, and the diameter ranges from 1.5 cm to 3 cm, for example, 2 cm or 2.5 cm.

[0053] When making the bamboo tube 1, if the bamboo node is exactly at the placement position of the mature embryo 3, it is necessary to open the bamboo node. If the bamboo node is below the placement position of the mature embryo 3, it is not necessary to open the bamboo node. The specific method can be flexibly handled according to the actual situation.

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

[0055] First, 3 mature embryos with robust growth were selected for use.

[0056] Secondly, a bamboo tube 1 about 30 cm long and 2 cm in diameter is cut from one side, leaving 3 / 4 of the grooved bamboo tube cover, that is, the cross-section of the bamboo tube 1 is a fan-shaped with a central angle of about 270°, and the lower end of the bamboo tube 1 is cut into a wedge shape. A seam about 0.5 cm deep is opened at an angle of 45° to the axial direction of the bamboo tube 1 at a distance of about 5 cm from the top of the bamboo tube cover, which is the fixing seam 12. A small piece of thin bamboo is also prepared to be stuck in the fixing seam 12 to make a snap piece 2 for fixing the mature embryo 3 in the later stage.

[0057] Next, the prepared mature embryo 3 is placed into the bamboo tube 1 through the notch 11, and the snap piece 2 is inserted into the fixing seam 12 so that the edge of the snap piece 2 is against the mature embryo 3 to fix the mature embryo 3. It should be noted that the morphological upper end of the mature embryo 3 is facing upward, and the upper end of the mature embryo 3 is flush with the top surface of the bamboo tube 1, which is beneficial in that after the mature embryo 3 germinates, the new leaves that grow out are all above the bamboo tube 1, which is beneficial to aerobic respiration and the later growth of the seedlings, and is not restricted by the bamboo tube 1.

[0058] Fourth, select suitable artificial mangrove tidal flats 4, medium and low tidal flats with elevations that can meet the growth needs of mangroves, where the flooding duration is greater than 8h / d and less than 12h / d, and the hydrodynamic environment is good.

[0059] Finally, the bamboo tube 1 with the mature embryo 3 is inserted into the tidal flat 4. The insertion depth is preferably such that the lower end of the mature embryo 3 contacts the beach surface. The planting density of the bamboo tube 1 is 5 to 9 plants / cm2. It is advisable to arrange adjacent plants randomly in a natural way, such as Figure 7 As shown, through the above operations, the mature embryo 3 after insertion sprouts radicles and penetrates into the tidal flat 4 in about 7 days, and the plumule sprouts in about 15 days, completing the seedling development process.

[0060] The present invention adopts embryo direct seeding instead of seedlings, which saves the process of seedling cultivation, improves the success rate of artificial forest cultivation, reduces costs, avoids the defects of easy root injury and low survival rate of mangrove seedlings during transplantation, and the direct seeding method of embryos directly fixed in bamboo tubes is easy to survive, and the bamboo tubes used in the present invention have a small diameter (about 2 cm) and therefore a small internal space, which avoids the possibility that animals such as pothos may enter the bamboo tube 1 and perch on the embryo or seedlings, avoids the risk of seedlings being entangled to death, improves the survival rate of seedling cultivation, and reduces the cost of artificial forest cultivation, so the method in the present invention does not give pothos space to grow. The seedlings in the present invention will grow outward through the notch 11 as they grow larger in volume, and will not squeeze the bamboo tube 1, which not only realizes the fixation of the mature embryo 3, but also facilitates the growth and extension downward and toward the outside of the bamboo tube 1 through the notch 11 during the natural growth of the seedlings.

[0061] 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.

[0062] 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 drum-type embryo direct seeding method for artificial afforestation of non-suitable tidal flat mangroves, characterized in that: The steps include: S1: a notch (11) is cut in the radially inward direction on the outer side surface of the bamboo tube (1) to form a groove-type bamboo tube sleeve, wherein the length direction of the notch (11) extends along the axial direction of the bamboo tube (1), the lower end of the bamboo tube (1) is cut into a wedge shape, a fixing slit (12) is opened at a set distance from the top end on the circumferential surface of the bamboo tube (1), and a snap-fit ​​piece (2) matching the fixing slit (12) is manufactured; S2: placing the prepared mature embryo (3) into the bamboo tube (1) through the notch (11) and inserting the buckle piece (2) into the fixing seam (12) to fix the mature embryo (3) in the bamboo tube (1); S3: inserting the bamboo tube (1) containing the mature embryo (3) into the tidal flat (4), wherein the insertion depth of the bamboo tube (1) is sufficient for the lower end of the mature embryo (3) to contact the surface of the tidal flat (4).

2. The method for direct seeding embryos in artificial afforestation of non-suitable tidal flat mangroves according to claim 1, characterized in that: The notch (11) is in a fan-shaped structure along the axial direction, and the central angle of the fan-shaped structure ranges from 80° to 100°.

3. The method for direct seeding embryos in artificial afforestation of non-suitable tidal flat mangroves according to claim 1, characterized in that: The length of the bamboo tube (1) ranges from 25 cm to 40 cm, and the diameter ranges from 1.5 cm to 3 cm.

4. The method for direct seeding embryos in a cylinder for artificial afforestation of mangroves on non-suitable tidal flats according to claim 1, characterized in that: The planting density of the bamboo tube (1) is 5 to 9 plants / .

5. The method for direct seeding embryos in a cylinder for artificial afforestation of mangroves on non-suitable tidal flats according to claim 1, characterized in that: The flooding duration of the middle and low tidal flats is 8 ~12 between.

6. The method for direct seeding embryos in a cylinder for artificial afforestation of mangroves on non-suitable tidal flats according to claim 1, characterized in that: The set distance is 4 cm to 8 cm from the top of the bamboo tube (1).

7. The method for direct seeding embryos in a cylinder for artificial afforestation of mangroves on non-suitable tidal flats according to claim 1, characterized in that: The angle between the opening direction of the fixing slit (12) and the axial direction is , The value range is 30°~60°.

8. The method for direct seeding embryos in a cylinder for artificial afforestation of mangroves on non-suitable tidal flats according to claim 1, characterized in that: The buckle piece (2) is interference fit with the fixing seam (12).

9. The method for direct seeding embryos in a cylinder for artificial afforestation of mangroves on non-suitable tidal flats according to claim 1, characterized in that: The top of the mature embryo (3) is flush with the top of the bamboo tube (1).

10. A drum-type embryo direct seeding device for artificial afforestation of mangroves in non-suitable tidal flats, characterized in that: It comprises a bamboo tube (1) and a snap-on piece (2), wherein the outer side surface of the bamboo tube (1) is cut into a notch (11) in a radially inward direction to form a groove-type bamboo tube sleeve, wherein the notch (11) is an inlet for inserting a mature embryo (3), and the length direction of the notch (11) extends along the axial direction of the bamboo tube (1); A fixing slit (12) is provided on the circumferential surface of the bamboo tube (1) at a set distance from the top end, and the buckle piece (2) matches the fixing slit (12); When the mature embryo (3) is placed into the bamboo tube (1) through the notch (11), the mature embryo (3) can be retained in the bamboo tube (1) by inserting the buckle piece (2) into the fixing slit (12).

11. The drum-type embryo direct seeding device for artificial afforestation of non-suitable tidal flat mangroves according to claim 10 is characterized in that: The notch (11) is in a fan-shaped structure along the axial direction, and the central angle of the fan-shaped structure ranges from 80° to 100°.

12. The drum-type embryo direct seeding device for artificial afforestation of non-suitable tidal flat mangroves according to claim 10 is characterized in that: The length of the bamboo tube (1) ranges from 25 cm to 40 cm, and the diameter ranges from 1.5 cm to 3 cm.

13. The drum-type embryo direct seeding device for artificial afforestation of non-suitable tidal flat mangroves according to claim 10 is characterized in that: The planting density of the bamboo tube (1) is 5 to 9 plants / .

14. The drum-type embryo direct seeding device for artificial afforestation of non-suitable tidal flat mangroves according to claim 10 is characterized in that: The flooding duration of the middle and low tidal flats is 8 ~12 between.

15. The drum-type embryo direct seeding device for artificial afforestation of non-suitable tidal flat mangroves according to claim 10 is characterized in that: The set distance is 4 cm to 8 cm from the top of the bamboo tube (1).

16. The drum-type embryo direct seeding device for artificial afforestation of non-suitable tidal flat mangroves according to claim 10, characterized in that: The angle between the opening direction of the fixing slit (12) and the axial direction is , The value range is 30°~60°.

17. The drum-type embryo direct seeding device for artificial afforestation of non-suitable tidal flat mangroves according to claim 10 is characterized in that: The buckle piece (2) is interference fit with the fixing seam (12).

18. The drum-type embryo direct seeding device for artificial afforestation of non-suitable tidal flat mangroves according to claim 10 is characterized in that: The top of the mature embryo (3) is flush with the top of the bamboo tube (1).

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