CN107801627B

CN107801627B - Method for culturing laver in shallow water area of outside island reef sea area

Info

Publication number: CN107801627B
Application number: CN201710823720.1A
Authority: CN
Inventors: 吴常文; 张建设
Original assignee: Individual
Current assignee: Wu Changwen
Priority date: 2017-09-13
Filing date: 2017-09-13
Publication date: 2020-07-14
Anticipated expiration: 2037-09-13
Also published as: CN107801627A

Abstract

The invention discloses a method for culturing laver in shallow water areas of the outside island reef sea area, which comprises the steps of selecting a sea area, fixing equipment, building equipment, daily management and the like. The upright post of the special device is provided with a supporting floating frame which can freely slide up and down; the upper end and the lower end of the supporting floating frame are both connected with traction ropes; the lower end of the supporting floating frame is also connected with an anchor rope; attachments capable of attaching the laver are arranged between the hauling ropes; a floating body is arranged on the traction rope at the lower end of the supporting floating frame; the traction rope at the lower end of the supporting floating frame is connected with a heavy block. The supporting floating frame has buoyancy, and can push the laver on the attachment out of the water surface at a low tide level to achieve the effect of desiccation. When the tide rises to a high tide level, the seawater submerges the traction rope at the upper end of the supporting floating frame, so that the laver on the attachment is completely submerged in the water, and the drying and exposure are stopped. Therefore, the invention has the advantages of high efficiency, dry exposure, weight increment promotion, yield estimation in the production process, simple and reliable construction and convenient management.

Description

Method for culturing laver in shallow water area of outside island reef sea area

Technical Field

The invention relates to a natural sea area algae cultivation method, in particular to an outside island reef sea area shallow water area laver cultivation method.

Background

The laver is rich in business, cheap and good, is called as 'longevity vegetable' in Japan, is a common aquatic product loved by people, and is also one of important mariculture biological species.

The south east China coastal laver is produced by artificial cultivation and wild collection. The artificial cultivation of the laver is mainly carried out in intertidal zones along the shore, is the main body for selling the laver on the market, has the price of about 50 yuan/kg, is influenced by the environment at present, and has larger yield fluctuation. Wild laver collection is mainly carried out in intertidal zones of the reef area of the outside island, and due to the fact that a large amount of collection is carried out, resources are seriously damaged, the yield is extremely low at present, and the market price is about 150 yuan/kg and 200 yuan/kg.

Compared with other seaweeds, the laver has special growth characteristics, and the laver growing in a natural sea area is partially exposed and partially immersed in seawater, so that the laver has good photosynthesis and high growth speed. According to the characteristic, people build laver culture facilities on the coastal mudflats by utilizing bamboos, woods and the like, so that the cultured laver is exposed when the tide falls, and is immersed in seawater when the tide rises, and the culture mode is not changed for decades. At present, due to the influence of deterioration of coastal beach environment, not only is the phenomenon of rottenness frequently caused by artificial cultivation of laver, but also the cultivation quality is gradually improved, and the phenomenon of enrichment of harmful substances such as heavy metal content is obvious. Meanwhile, since a large amount of artificially cultured laver is rotten sometimes, the coastal beach environment is seriously affected, and a laver culture area often has a remarkable peculiar smell. Under such a background, the laver culture industry starts to gradually landslide.

The utilization of coastal sea areas, particularly beach sea areas, in southeast coast of China is saturated or supersaturated, while the utilization of island reefs on the outer sides is numerous, the sea area utilization is low, and most of the sea areas are not developed and utilized. The laver cultivation is developed in the island sea area at the outer side, so that the laver cultivation space can be expanded, the laver cultivation quality is obviously improved, and the environment of the island sea area at the outer side can be further improved by utilizing the environment restoration function of the seaweed. However, to develop laver cultivation in the outside island waters, the technical problems of the facilities must be solved: the method mainly solves the problem of exposure of the laver cultured in a facility in a seawater area, and solves the problem of wind wave and flow resistance, particularly typhoon influence of culturing in the seawater area.

Disclosure of Invention

The invention aims to provide a method for culturing laver in shallow water in an outside island sea area, which can efficiently dry and expose to promote weight gain, can estimate yield in a production process, is simple and reliable in construction and convenient to manage, aiming at the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: a method for culturing laver in shallow water of a side island reef sea area comprises the following steps,

① selecting sea area with flow rate less than 0.8m/s, water depth less than 15m and wind wave less than 5 grade;

② fixing equipment, namely vertically driving the upright post (1) of the laver culture device in the shallow water area of the island reef sea area outside into the sea bed for fixing;

③ marking, namely marking the positions of a bottom tide line and a high tide line on the upright post (1);

④ building equipment, namely, a complete shallow water area laver culture device of an outside island reef sea area is built, the laver culture device comprises the upright posts (1), supporting floating frames (2) capable of freely sliding up and down are arranged on the upright posts (1), traction ropes (3) are connected to the upper ends and the lower ends of the supporting floating frames (2), anchor ropes (6) are further connected to the lower ends of the supporting floating frames (2), attachments capable of attaching laver are arranged between the traction ropes (3), floating bodies (31) are arranged on the traction ropes (3) at the lower ends of the supporting floating frames (2), heavy blocks (7) are connected to the traction ropes (3) at the lower ends of the supporting floating frames (2), signal signs (11) are mounted on the upright posts (1), steel pipes with phi 5cm (steel pipes special for plastic wrapping) are selected as the upright posts (1), steel wires with phi 1cm (steel wires special for plastic wrapping) or other ropes are selected as the traction ropes (3), laver culture frames are formed between the upright posts (1), and the laver culture seedling ropes are convenient to be connected with the upright posts (1) in a front-back and left-right mode or are connected with the anchor piles.

⑤ daily management, increasing and decreasing the weight (7) according to the requirement of the floating condition of the supporting floating frame (2), and harvesting the laver according to the requirement, the supporting floating frame has buoyancy, and can push the laver on the attachment out of the water surface at the low tide level to achieve the effect of drying and dew, and when the tide rises to the high tide level, the seawater submerges the traction rope at the upper end of the supporting floating frame to cause the laver on the attachment to be completely submerged in the water, and the drying and dew are stopped, the drying and dew are stopped at the high tide level to have better yield, the number of the weight is increased and decreased according to the requirement of the attachment growth condition, and the yield of the laver can be estimated according to experience, thereby greatly facilitating the management and production planning, when the yield is uneven, the number of the attachment can be adjusted, if the yield of the laver is larger, a plurality of floating bodies can be arranged on the traction rope at the bottom, the attachment is a laver culturing seedling rope, about 10-15cm steel pipe is selected, the steel pipe is vertically driven into the sea bottom to be fixed, the square, the matrix with the interval of about 10 m.

In order to optimize the technical scheme, the adopted measures further comprise: the supporting floating frame comprises at least one rigid supporting column; the top and the bottom of the support column are both connected with radially arranged sliding rings. One or more rigid support columns are internally provided with hollow structures so as to reduce the dead weight and increase the buoyancy. Preferably, the support columns and/or the slip rings may be filled with foamed plastic to maintain buoyancy and prevent seawater erosion. The supporting floating frame is a straight pipe with coaxial inside and outside, and two ends are sealed by an annular connecting sheet to form a cylindrical cavity. The upper end and the lower end of the supporting floating frame are provided with annular iron sheets, a thin iron pipe is welded on the inner edge of each annular iron sheet, a thick iron pipe is also welded on the outer side of each annular iron sheet, and preferably, foamed plastic can be filled in a closed cavity formed between each thin iron pipe and each annular iron sheet and each thick iron pipe. The hauling cable supporting the upper end of the floating frame is provided with a rigid supporting component which can keep the hauling cable basically straight. The traction rope at the upper end is kept at a certain rigidity, so that the gravity collapse of the traction rope at the upper end can be prevented, the effective dry exposure area of attachments is further improved, and the yield is improved. The floating body of the traction rope supporting the lower end of the floating frame is provided with a vertical rod. When the scheme of the supporting part is not provided, the floating body can push the upright above the floating body out of the water surface, so that the effect of drying and exposing is achieved. The upright rods are laver attachments or arranged in parallel with the laver culturing seedling ropes, the laver culturing seedling ropes are connected with the traction ropes at the upper and lower parts, and the upright rods only play a supporting role. It is of course also possible to use support members in combination with the uprights for better results, but this obviously increases the costs. The upright pole is connected with a laver culturing seedling rope. More laver culture seedling ropes can increase a certain yield, but a plurality of factors such as floating body buoyancy, column distance, water bearing capacity and the like are comprehensively considered during setting. The top of the upright post is provided with a signal sign. The signal signs include signal lamps, flags and the like. Working opening ropes are arranged between the upright posts as required. A lower working port rope is arranged as required. The height of the supporting floating frame is less than 1.3 times of the height difference between the local high tide level and the local low tide level. The support floating frame is too long to effectively utilize the tide level difference for drying and exposing, so that a proper height should be selected.

Because the invention adopts the supporting floating frame which can freely slide up and down and is arranged on the upright post; the upper end and the lower end of the supporting floating frame are both connected with traction ropes; the lower end of the supporting floating frame is also connected with an anchor rope; attachments capable of attaching the laver are arranged between the hauling ropes; a floating body is arranged on the traction rope at the lower end of the supporting floating frame; the traction rope at the lower end of the supporting floating frame is connected with a heavy block. The supporting floating frame has buoyancy, and can push the laver on the attachment out of the water surface at a low tide level to achieve the effect of desiccation. When the tide rises to a high tide level, the seawater submerges the traction rope at the upper end of the supporting floating frame, so that the laver on the attachment is completely submerged in the water, and the drying and exposure are stopped. The method has the advantages that the yield is better when the dew is stopped at a high tide position, the number of the weight blocks is increased or decreased according to the requirement according to the attached growth condition, the laver yield can be estimated according to experience, the management and production planning are greatly facilitated, and the number of the attachments can be adjusted when the yield is uneven. If the yield of the laver is larger, a plurality of floating bodies can be arranged on the traction rope at the bottom. The attachment is a laver culture seedling rope. Selecting steel pipes with the diameter of about phi 10-15cm, vertically driving the steel pipes into the sea floor in a sea area for fixing, forming a matrix combined by square, rectangular or other shapes at the distance of about 10m, and exposing the upper ends of the steel column piles to the water surface for 3-5m at the bottom tide level. Therefore, the invention has the advantages of high efficiency, dry exposure, weight increment promotion, yield estimation in the production process, simple and reliable construction and convenient management.

Drawings

FIG. 1 is a schematic illustration of steps of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a high-altitude structure of an apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of a low-tide level configuration of an apparatus in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of a partial structure of an apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an optimized partial structure of an apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a preferred partial structure of an apparatus according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples.

The reference numbers illustrate: the device comprises upright columns 1, signal signs 11, a supporting floating frame 2, a sliding ring 21, supporting columns 22, a traction rope 3, a floating body 31, upright rods 32, a supporting part 33, a working opening rope 4, a laver culturing seedling rope 5, an anchor rope 6 and a weight 7.

Example (b): referring to fig. 1 to 6, a method for culturing laver in shallow water of a reef-side island sea area, which has the steps of,

③ marking, marking the positions of the bottom tide line and the high tide line on the upright post (1), and calculating the tide level difference;

⑤ daily management, increasing and decreasing the weight (7) according to the need according to the floating condition of the supporting floating frame (2), and harvesting the laver according to the need, the supporting floating frame 2 has buoyancy, and can push the laver on the attachment out of the water surface at the low tide level, so as to achieve the effect of drying and dew, when the tide rises to the high tide level, the sea water submerges the traction rope 3 at the upper end of the supporting floating frame 2, so that the laver on the attachment is completely submerged in the water, and the dew stops drying and dew, the dew stops at the high tide level, so that the yield is better, the weight 7 is increased and decreased according to the need according to the attachment growth condition, the yield of the laver can be estimated according to experience, the management and production planning are greatly facilitated, the number of the attachment can be adjusted when the yield is uneven, if the yield of the laver is larger, a plurality of floating bodies 31 can be arranged on the traction rope 3 at the bottom, the attachment is the laver culturing seedling rope 5, a special steel pipe with the diameter of 10-15cm is selected, the special steel pipe is vertically driven into the sea floor, the square with the distance of about 10m, or other shape.

The supporting floating frame 2 comprises at least one rigid supporting column 22; the top and bottom of the support column 22 are connected with radially arranged slide rings 21. One or more rigid support columns 22 are hollow structures to reduce the dead weight and increase the buoyancy. Preferably, the support columns 22 and/or the slip rings 21 may be filled with foamed plastic to maintain buoyancy and prevent seawater erosion.

The hauling cable 3 supporting the upper end of the floating frame 2 may be provided with additional rigid support members 33 to keep the hauling cable substantially straight. The traction rope 3 at the upper end is kept at a certain rigidity, so that the gravity collapse of the traction rope 3 at the upper end can be prevented, the effective exposed area of attachments is further increased, and the yield is further increased.

The top of the upright post 1 is provided with a signal sign 11. The signal sign 11 includes a signal lamp, a flag, and the like. Working opening ropes 4 are arranged between the upright posts 1 according to requirements. The lower workhead cord 4 is provided as required. The height of the supporting floating frame 2 is less than 1.3 times of the difference between the heights of the local high tide level and the local low tide level (calculated according to the mark). The support floating frame 2 is too long to effectively utilize the tide level difference for drying and exposing, so that a proper height should be selected.

Preferably, referring to fig. 5, the optimization scheme of this embodiment is as follows: the supporting floating frame 2 is a straight pipe with coaxial inside and outside, and two ends are sealed by an annular connecting sheet to form a cylindrical cavity. That is, the upper and lower ends of the supporting floating frame 2 are ring-shaped iron sheets, a thin iron pipe is welded on the inner edge of the ring-shaped iron sheet, a thick iron pipe is welded on the outer side of the ring-shaped iron sheet, and preferably, the closed cavity formed between the thin iron pipe and the ring-shaped iron sheet and between the thin iron pipe and the thick iron pipe can be filled with foamed plastic.

Preferably, referring to fig. 6, the optimization scheme of this embodiment is as follows: the floating body 31 of the hauling rope 3 supporting the lower end of the floating frame 2 is provided with a vertical rod 32. When the scheme without the supporting part 33 is adopted, the floating body 31 can push the upright rods 32 above the floating body out of the water surface, so that the effect of drying and exposing is achieved. The shape of the float 31 may be spherical, cylindrical, cubic, etc. The upright rods 32 are laver attachments, or the upright rods 32 and the laver culturing seedling ropes 5 are arranged in parallel, the laver culturing seedling ropes 5 are connected with the traction ropes 3 at the upper part and the lower part, and the upright rods 32 only play a supporting role. It is of course also possible to use the support members 33 in combination with the uprights 32 for better results, but this would obviously increase the costs. The upright pole 32 is connected with a laver culturing seedling rope 5. More laver culture seedling ropes 5 can increase a certain yield, but a plurality of factors such as the buoyancy of the floating body 31, the distance between the upright columns 1, the bearing capacity of the water body and the like are comprehensively considered during the setting.

While the invention has been described in connection with a preferred embodiment, it is not intended to limit the invention, and it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention.

Claims

1. The method for culturing the laver in the shallow water area of the island reef sea area at the outer side is characterized by comprising the following steps: comprises the following steps of (a) preparing a solution,

② fixing equipment, namely vertically driving upright posts (1) of the laver culture device in the shallow water area of the island reef sea area outside into the sea bed for fixation, wherein the distance between the upright posts (1) is 10m to form a rectangular combination, and the upper ends of the upright posts (1) are exposed out of the water surface by 3-5m at a low tide level;

③ building equipment, namely building a complete shallow water laver culture device in the island sea area of the outside island, which comprises the upright post (1), wherein the upright post (1) is provided with a supporting floating frame (2) capable of freely sliding up and down, the upper end and the lower end of the supporting floating frame (2) are both connected with traction ropes (3), the lower end of the supporting floating frame (2) is also connected with anchor ropes (6), attachments capable of attaching laver are arranged between the traction ropes (3), a floating body (31) is arranged on the traction rope (3) at the lower end of the supporting floating frame (2), the traction rope (3) at the lower end of the supporting floating frame (2) is connected with a weight (7), and a signal mark (11) is arranged on the upright post (1);

④ daily management, namely increasing or decreasing the weight (7) according to the floating condition of the supporting floating frame (2) and harvesting the laver according to the requirement;

the traction rope (3) at the upper end of the support floating frame (2) is provided with a rigid support component (33) which can keep the traction rope straight.

2. The method for culturing laver in a shallow water area of an outside island reef sea area according to claim 1, which comprises the following steps: the supporting floating frame (2) comprises at least one rigid supporting column (22); the top and the bottom of the supporting column (22) are both connected with sliding rings (21) which are arranged in the radial direction;

the upper end and the lower end of the supporting floating frame (2) are annular iron sheets, an iron pipe is welded on the inner side edge opening of the annular iron sheets, and an iron pipe is also welded on the outer side of the annular iron sheets.

3. The method for culturing laver in a shallow water area of an outside island reef sea area according to claim 1, which comprises the following steps: the supporting floating frame (2) is a straight pipe with coaxial inside and outside, and two ends are sealed by an annular connecting sheet to form a cylindrical cavity.

4. The method for culturing laver in a shallow water area of an outside island reef sea area according to claim 1, which comprises the following steps: and a vertical rod (32) is arranged on a floating body (31) of the traction rope (3) which supports the lower end of the floating frame (2).

5. The method for culturing laver in a shallow water area of an outside island reef sea area as claimed in claim 4, wherein: the upright rods (32) are connected with laver culture seedling ropes (5).

6. The method for culturing laver in a shallow water area of an outside island reef sea area according to claim 1, which comprises the following steps: working opening ropes (4) are arranged between the upright columns (1) as required.

7. The method for culturing laver in a shallow water area of an outside island reef sea area according to claim 1, which comprises the following steps: the height of the supporting floating frame (2) is less than 1.3 times of the height difference between the local high tide level and the local low tide level.