CN109006450A - A kind of tangleweed keeps hanging raft frame and its application method - Google Patents

Abstract

The invention discloses a large seaweed hanging and raising raft frame, which comprises a culture raft frame, fixed ropes and anchoring facilities. The ropes parallel to the sea surface are connected with an adjustment cable at intervals. The top end of the adjustment cable is connected with a buoy, and the bottom end is connected with a falling stone. The directions are vertical; large algae are attached to the rope. Aiming at the superior regional environment of Banwan, combined with the tidal conditions of different Banwan areas, the present invention can not only play the role of aquaculture rafts for large-scale seaweed cultivation, but also provide infrastructure support for the formation of secondary seaweed populations, thereby providing semi-salt Provide certain technical support for the development and utilization of fishery resources in the Gulf region.

Description

A large seaweed hanging and raising raft and its use method

technical field

The invention belongs to the technical field of algae cultivation devices, and in particular relates to a raft frame for hanging large seaweeds and a method for using the same.

Background technique

my country's mariculture has achieved great development in the past ten years, and it is the only country in the world where the production of aquaculture exceeds that of fishing. In recent years, the concept and method of ecological fishery have been improved and continuously developed, and higher requirements have been put forward for the farming model. Ecological fishery can realize the aquaculture production of specific aquatic organisms in a specific fishery water environment, and realize the hierarchical multi-level energy conversion and material cycle among producers, consumers and decomposers in the fishery ecosystem. , stable and efficient fishery production mode.

Under different types of ecological fish farming models, on the one hand, it is required to improve the quantity and quality of production to provide stable and healthy output; on the other hand, it is required to reduce the adverse impact of farming on the environment as much as possible to achieve sustainable development . The breeding techniques of a single species are relatively mature. The multi-species and three-dimensional ecological breeding mode has been explored and tried in the process of pond culture, cage culture, raft culture and other marine culture.

Invention patent CN 107593418 A discloses a large-scale seaweed anti-wind and wave cultivation device for absorbing and purifying arsenic in seawater, including a floating frame, a sinking frame below the floating frame, a floating ball and a counterweight. The floating ball passes through the rope and the floating frame The counterweight is connected to the sinking frame through ropes, and a number of support rods are fixed at intervals between the floating frame and the sinking frame. The floating frame, the shaping frame and the support rods constitute the breeding frame. Symmetrical hanging ropes, seedling ropes are fixed between the upper and lower hanging ropes, seedling clips are arranged longitudinally on the seedling ropes, a connected cavity is arranged in the floating frame, the cavity forms a buoyancy adjustment cavity, and the bottom surface of the floating frame is set There is a one-way drainpipe communicating with the buoyancy adjustment chamber, and a buoyancy control device for controlling the ups and downs of the buoyancy frame is arranged on the buoyancy frame. The invention uses a buoyancy control device to fill the buoyancy adjustment chamber of the buoyancy frame with seawater or air to control the ups and downs of the buoyancy frame, thereby improving the ability to resist wind and waves, realizing the protection of the cultivation frame, and facilitating the stable growth and reproduction of large algae.

Invention patent CN 106718812 A discloses a macroalgae culture and its harvesting method. The cultivation method includes: evenly placing seaweed fragments on the prepared macroalgae growth substrate, and then placing the macroalgae growth substrate in a cement pool with seawater The seedlings are cultivated at the bottom for 15 to 25 days. During the cultivation period, fertilizers are applied to the broken branches of seaweed to obtain seaweed seedlings; the growth substrate of seaweed growing with seaweed seedlings is transferred, placed in a seaweed cage for cultivation, and seaweed is obtained. The invention uses natural fiber bamboo strips as the growth substrate of large algae, which can avoid the problem of releasing toxic small molecules that endanger food safety and cause pollution to the marine environment. In addition, the net cage of the invention provides macroalgae with a growth space without ingestion and damage by harmful organisms, and can realize large-scale cultivation of macroalgae. In addition, seawater tilapia can be stocked in the interval between cages, and the feeding habits of tilapia can be used to help clean the cages and reduce the attachment and damage of attached organisms to the cages.

The sea area of the half bay is less disturbed by wind and waves, and the water body is relatively calm, which is conducive to the accumulation of nutrients. For fish farming, it is easy to provide sufficient natural bait to meet the needs of fish production. my country has a long coastline, and there are many bays suitable for ecological fish farming. Carrying out fishery work in the semi-bay sea area will greatly promote the full and orderly utilization of resources in the suitable bay, and bring about innovations in ecological fish farming models, which have broad development prospects. However, at present, the fishery work in the half-bay sea area has just started, and the support of core technologies is insufficient, especially higher requirements are put forward for the technology of increasing the cultivation of large seaweed. Most of the currently disclosed large-scale seaweed cultivation devices are culture box structures, which are not only complex in structure and high in cost, but also have a large distribution density of raft structure and seaweed, which is not suitable for small wind and wave disturbances, relatively calm water bodies and It is used in the half-bay sea area with shallow water depth.

Contents of the invention

Aiming at the defects and deficiencies of the prior art, the present invention provides a large seaweed hanging and raising raft and its application method.

To achieve the above object, the technical solution of the present invention is:

A kind of large-scale seaweed hanging culture raft frame, including culture raft frame, fixed rope and anchoring facility, described culture raft frame is connected with the anchorage facility fixed on the seabed through fixed rope; Described culture raft frame includes a A rope, the rope is connected with an adjustment cable at intervals, the top of the adjustment cable is connected with a buoy, and the bottom is connected with a falling stone, and the culture raft stands in seawater and is perpendicular to the direction of the tide; Large algae are attached to the rope.

Further, the bottom ends of the adjustment cables located at the left and right ends of the rope are connected to the anchoring facilities fixed on the seabed through fixed ropes.

Preferably, the distances between the adjusting cables are equal.

Preferably, the macroalgae is attached and fixed on the rope through a polyethylene rope.

Further, the present invention also provides a method for using the above-mentioned large seaweed hanging and raising raft, which specifically includes the following steps:

(1) Choose to lay the aquaculture raft in the Banwan sea area;

(2) Setting of the culture raft frame: the assembled culture raft frame is connected with the anchoring facilities fixed on the seabed through the fixed rope, and the culture raft frame is perpendicular to the tidal current direction;

(3) Attachment of seaweed seedlings: use polyethylene rope as the seedling attachment substrate, and attach the seedlings of large seaweeds to the rope;

(4) Water layer adjustment: by adding falling rocks, the rope is located at a depth of 2m underwater;

(5) Harvest of adult macroalgae: After the macroalgae grows to a certain length, adjust the number of floats and falling rocks to make the rope float to the surface of seawater, and harvest the adult macroalgae.

Preferably, in step (1), the water depth of the semi-bay sea area is 2-15m, the tidal current direction is regular, and the tidal range is ≤3m.

Preferably, in step (3), the seedlings of the macroalgae are young sporophytes of one or more of seaweeds in kelp, sea millet, and copper algae.

Preferably, in step (5), when the macroalgae adults are harvested, keep the 10-20cm long algal body, make it continue to attach to the rope, and then adjust the water layer by adding falling stones, so that the rope is 2m underwater deep.

Compared with prior art, the advantages of the present invention:

Aiming at the superior regional environment of Banwan, combined with different tidal conditions in Banwan, the present invention can not only play the role of aquaculture rafts for large-scale seaweed cultivation, but also provide infrastructure support for the formation of secondary seaweed populations, thereby providing semi Provide certain technical support for the development and utilization of fishery resources in the Gulf region.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the overall structure schematic diagram of large seaweed hanging and raising raft frame of the present invention;

Fig. 2 is the right view of Fig. 1;

Reference signs: 1, fixed rope; 2, anchoring facility; 3, rope; 4, adjusting cable; 5, float; 6, falling stone; 7, large seaweed; 8, polyethylene rope; 9, sea surface; 10, seabed.

Detailed ways

The present invention relates to a raft frame for hanging and growing large seaweeds and a method for using the same, which is realized through links such as sea area selection in a half bay, raft frame setting, seaweed seedling attachment, water layer regulation, and adult large seaweed harvesting.

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1-2, a large-scale seaweed hanging culture raft includes a culture raft, a fixed rope 1 and an anchoring facility 2. Wherein, the fixed rope 1 is selected from ordinary pile cables, and the anchoring facility 2 is selected from ordinary piles. The breeding raft frame includes a rope 3 parallel to the sea surface 9, and the rope 3 is equidistantly connected with a plurality of adjusting cables 4, and the top of each adjusting cable 4 is connected with a buoy 5, and the bottom end is connected with a pendant. Stone 6, the culture raft frame that is made up of rope 3, adjusting cable 4, float 5 and falling stone 6 is a plane (rather than the culture box structure that accounts for larger space volume), and described culture raft frame stands in seawater ( That is, the entire plane of the culture raft frame is perpendicular to the sea surface) and perpendicular to the tidal current direction (shown by the arrow in Figure 2). Compared with the traditional culture box, or the culture raft frame spread on the sea surface or a certain water layer, the culture raft frame of the present invention is a plane, which stands in the seawater and is perpendicular to the direction of the tidal current. The area is smaller, and it can exchange nutrients and gases better with the water body; moreover, it is more convenient to use floats and falling stones to change the water layer where the algae are located, which is not only beneficial to the harvest of algae, but also conducive to algae cultivation Conditioning of the water layer during the process. The bottom ends of the adjustment cables 4 located at the left and right ends of the cable 3 are connected to the anchoring facilities 2 fixed on the seabed 10 through the fixed ropes 1 . The macroalgae 7 is attached to the rope 3 , and the macroalgae 7 is fixedly attached to the rope 3 through a polyethylene rope 8 .

The present invention also provides a method for using the raft for hanging and raising large seaweeds, which specifically includes the following steps:

(1) Choose to lay the aquaculture raft frame in the half bay sea area.

The selection requirements for the semi-bay sea area are as follows:

Water depth: 2-15 meters.

Substrate: Mud and sand type substrate, which can be piled and anchored.

Trend direction: the direction is regular, which is beneficial to the laying of raft frames.

Tidal range: It should not be too large, and the maximum should not exceed 3 meters.

Area: 50-100 mu.

(2) Setting of culture rafts: piling on the seabed, a plurality of assembled culture rafts are respectively connected with the piles fixed on the seabed through pile cables, so that the rope 3 sinks to a depth of 2 meters underwater, and the culture The raft is perpendicular to the tidal current direction.

(3) Attachment of seaweed seedlings: Utilize polyethylene rope 8 as the seedling attachment substrate, collect young sporozoites such as kelp, sea millet, and copper algae to attach to the rope 3, and after the attachment is firm, form a "one-stop" along the rope 3 "type fixed to form a long breeding rope below the sea surface.

(4) Water layer adjustment: adjust the water layer through the float 5 and the falling stone 6, set the float 5 to provide buoyancy for the entire rope 3, and add the falling stone 6 so that the rope 3 is always in a relatively fixed water layer, the depth of the water layer It is 2 meters, and then realizes the regulation of the water layer of rope 3.

(5) Harvesting of adult macroalgae: after the macroalgae grows to a certain length, the rope 3 floats to the surface of seawater by adjusting the number of floats 5 and falling stones 6, so as to harvest the adult macroalgae. When the large seaweed is harvested, keep the 10-20cm long algal body, make it continue to be attached to the rope 3, and then adjust the water layer by adding the falling stone 6, so that the rope 3 is in the depth of 2m under the water, and continue to carry out large-scale algae. Seaweed farming.

Although the present invention has been described in detail with general descriptions and specific examples above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, the modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the protection scope of the present invention.

Claims (8)

1. a kind of large-scale seaweed hangs and raises the raft frame, it is characterized in that: comprise culture raft frame, fixed rope and anchorage facility, described culture raft frame is connected with the anchorage facility fixed on the seabed by fixed rope; Described culture raft frame comprises A rope parallel to the sea surface. An adjustment cable is connected to the rope at intervals. The top end of the adjustment cable is connected to a float, and the bottom end is connected to a falling stone. The culture raft stands in the seawater and It is perpendicular to the direction of the tide; large algae are attached to the rope. 2. The raft rack for hanging large seaweeds according to claim 1, characterized in that: the bottom ends of the adjustment cables located at the left and right ends of the rope are connected to the anchoring facilities fixed on the seabed through fixed ropes. 3. The raft rack for hanging large seaweeds according to claim 2, characterized in that: the distances between the adjusting cables are equal. 4. The large seaweed hanging raft according to claim 3, characterized in that: the large seaweed is attached and fixed on the rope through a polyethylene rope. 5. The using method of the large seaweed hanging and raising raft frame according to claim 4, is characterized in that, specifically comprises the following steps: (1) Choose to lay the aquaculture raft in the Banwan sea area; (2) Setting of the culture raft frame: the assembled culture raft frame is connected with the anchoring facilities fixed on the seabed through the fixed rope, and the culture raft frame is perpendicular to the tidal current direction; (3) Attachment of seaweed seedlings: use polyethylene rope as the seedling attachment substrate, and attach the seedlings of large seaweeds to the rope; (4) Water layer adjustment: by adding falling rocks, the rope is located at a depth of 2m underwater; (5) Harvest of adult macroalgae: After the macroalgae grows to a certain length, adjust the number of floats and falling rocks to make the rope float to the surface of seawater, and harvest the adult macroalgae. 6. The method according to claim 5, characterized in that in step (1), the water depth of the semi-bay sea area is 2-15m, the tidal current direction is regular, and the tidal range is ≤3m. 7. the using method of the large seaweed hanging and raising raft according to claim 5, is characterized in that: in step (3), the seedling of described large seaweed is one or more in kelp, sea millet, copper algae Young sporophytes of algae. 8. The method for using the large seaweed hanging and raising raft according to claim 5, characterized in that: in the step (5), when the large seaweed is harvested as an adult, keep the long algal body of 10-20cm, so that it continues to be attached to the husk Then adjust the water layer by adding falling rocks, so that the rope is at a depth of 2m underwater.