68 results about "Marine fisheries" patented technology

The invention belongs to the technical field of underwater target tracking, discloses an underwater target tracking method and system, a storage medium, equipment, a terminal and an application. The method includes: designing a structure based on a twin network in combination with an attention mechanism and a scale pyramid, wherein the algorithm is composed of a modified deep convolutional neuralnetwork VGG and an attention module; performing related operation on the image high-dimensional semantic information features extracted by the template branch and the search branch; and obtaining thetarget position of the next frame, and adaptively selecting the optimal scale in combination with the scale. The invention provides an attention mechanism and scale self-adaption-based underwater target tracking method, which achieves accurate and robust tracking of an underwater target, provides a basic guarantee for marine ecological protection and marine fishery, and promotes marine sustainabledevelopment. The invention provides an underwater target tracking method based on an attention mechanism and scale self-adaptation, and the problems in the underwater tracking process are further relieved.

The present invention relates to a dynamic monitoring, inquiring and verifying system for fishing boats, and is used for monitoring verification management and wreck salvage of fishing boats at sea; the system consists of an input / output interface part, a data-processing part, a data storage part and a display part; the interface part can be used to receive the signal of a fishing boat; then through module analyzing, judging and processing the signal by the data processing center, the system can realize the remote electron-monitoring, inquiring and verifying for fishing boats in a larger area around the fishing boat, can inquiry and trace the relevant information of other fishing boats and vessels, and can transmit the relevant data real time to the land command center completely; the dynamic monitoring, inquiring and verifying system for fishing boats of the present invention is designed according to the fisheries management requirements of the marine fisheries management department; the present invention has the advantages of novel structure, rapid verification and accurate monitoring, easy management, low cost as well as good effect, etc. and thereby, the present invention belongs to novel dynamic monitoring, inquiring and verifying system for fishing boats, and combines cost-effectiveness and practicability into a whole.

The invention relates to a marine fishery production platform, which consists of a primary ship, a secondary ship and a transporting ship, wherein a cultivation system, a logistic system and a management and control system are arranged on the primary ship; the secondary ship forms a fishing system; the transporting ship forms a transporting system; the fishing system is used for fishing around the master ship; the fished economic fish is transported to the master ship to process and refrigerate, and the fished trash fish is used as the feed of the cultivation system; the cultivation system is used for cultivating fish on the master ship; the logistics system is used for feeding supplies to the secondary ship of the fishing system and processing the fish cultivated in the cultivation system and / or the fish fished by the fishing system; the management and control system is in charge of the management of whole marine fishery production platform; and the transporting system is used for transporting the products processed by the logistics system and / or living fish cultivated in the cultivation system, and parent fish, fish fry, feed needed by the cultivation system, and supplies needed by whole marine fishery production platform. By adoption of the marine fishery production platform, the quality of cultivated aquatic product is improved; the platform can be used for emergency such as typhoon, thus the cultivation risk is reduced.

The invention relates to the technical field of communication, discloses a radar warning system, and particularly discloses an active anti-collision radar warning system for a marine fishery vessel. The active anti-collision radar warning system comprises a power module, a main radar interface module, an analog-digital conversion module, a data processing and equation solving module, an electronic compass module, a data and graphic display module and a warner driving module. The active anti-collision radar warning system has the advantages that relevant data can be actively computed through the system, so that a vessel can avoid travelling lanes with potential safety hazards, actively avoids the collision of vessels, island blocks or floating objects, and has an active anti-collision function.

The invention relates to the field of marine fishery informatization and discloses a marine fishing vessel trajectory prediction method and system based on Beidou and AIS data fusion so as to improvemarine fishery vessel monitoring and an anomaly detection level and ensure safe operation of a fishing vessel. The trajectory prediction method comprises steps of inputting observation value time sequences of Beidou and AIS, and synchronizing observation data of each sensor for the same target to the same timeline; fusing the AIS data and the Beidou data according to the result of time registration of AIS trajectory data and Beidou trajectory data; according to the result obtained after the AIS data and the Beidou data are fused, obtaining optimal state estimation at the current moment, and performing trajectory prediction on the basis of the optimal state estimation. The method is advantaged in that the Beidou and AIS data are fused, fishing boat track prediction is realized based on theBeidou and AIS data, prediction precision is high, applicability is high when data transmission is lost, and a marine fishery ship monitoring level is effectively improved.

The invention relates to an interactive information auxiliary system based on an ontology and location service. In the system, after a server end monitors a radio signal sent by a mobile terminal, the server end quickly determines the location of a user, and promptly transmits characteristic information related to the mobile user location to a front-end display system by interacting with a location fingerprint database and an ontology knowledge base, thus offering help to the user activities. On the other hand, the user also can use the mobile terminal to send a service request to a background system or ask the background system for help, and the system automatically calculates the user location and responds to the request of the user. To accurately obtain the location information of the user, the system of the invention adopts a Dempster-Shafer evidence theory-based positioning method and a Gaussian mixture model (GMM)-based location fingerprint clustering algorithm. the invention, the wireless received signal strength (RSS) and location fingerprint-based positioning technology is organically merged, the rich knowledge expression and organization technology of the ontology is combined and an interactive information auxiliary system is implemented. The system makes full use of the existing wireless network facility, is easy to arrange and convenient to use and can send related information to the user based on location and quickly receive the service request sent by the user to realize interaction. The system can be applied to the occasions such as marine fishery production, leisure fishing area, tourist attractions and large shopping malls to realize information interaction and emergency rescue. Meanwhile, the efficient positioning technology also solves the problems in terms of positioning accuracy and energy consumption of mobile equipment.

The invention provides an amphibious two-ball robot which comprises an axle, spherical shells fixed at the two ends of the axle, a driving mechanism capable of driving the spherical shells to move, abuoyancy force adjusting device, a carrying cabin and a solar panel, wherein the carrying cabin is fixed in the spherical shells; under the action of the buoyancy force adjusting device, the sphericalshells go underwater, float on the water surface or walk on the land; and under the action of the driving mechanism, the spherical shells carry the carrying cabin to walk underwater, on the water surface or on the land to finish corresponding operations. According to the amphibious two-ball robot, an underwater propulsor is combined with a rotary motor to enable the robot to move on the water surface and on the land; and the solar energy is utilized to provide continuous power for the robot so as to realize long-time and long-distance operation of the robot. The amphibious two-ball robot hasthe characteristics of not overturning, being flexible in veering and long in time of endurance and can be widely applied to tasks including field rescue, offshore landing, oceanographic research andinvestigation, seaway survey, marine fishery development and the like.

The invention relates to the technical field of marine fishery resource maintenance and development, in particular to a tower type artificial fish reef for breeding enhanced and released fries in a marine ranch and a breeding method. According to the tower type artificial fish reef for breeding the enhanced and released fries in the marine ranch, net racks with different mesh specifications are mainly utilized to be arranged on different tower layers of the tower type artificial fish reef, and artificial fish reef design and construction for layered and repeated utilization of bait and graded protection of fishes are realized; and according to the tower type artificial fish reef for breeding the enhanced and released fries in the marine ranch, the net racks with different mesh specifications are arranged at the windows of the different tower layers, released young fries, juvenile fishes, small fishes and small and medium-sized fishes with different specifications can be effectively protected, graded protection of the young fries is achieved, the young fries can be prevented from being caught by large and medium-sized fishes, and the survival rate of released small and medium-sized fries is increased.

A real-time three-dimensional observation system for a marine fishery aquaculture water area comprises a plurality of seabed sensor nodes, a plurality of sea surface buoy nodes and an onshore monitoring system, and the seabed sensor nodes comprise hydrology and water quality sensors and are used for collecting seabed hydrology and water quality data; the sea surface buoy nodes comprise hydrological, water quality and meteorological sensors and are used for collecting sea surface hydrological, water quality and meteorological data, the sea surface buoy nodes exchange data with the seabed sensornodes through underwater acoustic communication, and meanwhile the positions of the seabed sensor nodes are measured according to underwater acoustic positioning. And the land monitoring system receives the data sent by the sea surface buoy nodes through satellite communication, obtains hydrological, water quality and / or meteorological data about the seabed and the sea surface, and obtains position data of the seabed sensor nodes.

The invention discloses a multi-spectral remote sensing image-based ship target quick-detection method, and belongs to the technical field of remote sensing image-based target detection. According to the method, the information of the spectral domain and the spatial domain is fully utilized, and the Walsh-Hadamard transform domain coefficient of a multi-spectral remote sensing image is processed to extract the saliency characteristic of the spatial domain. The method is used for sea ship target detection. The method of the invention can effectively overcome the defects of the traditional multi-spectral image ship detection method such as high computational complexity and complex parameter setting. A large number of real multi-spectral remote sensing data experiment results show that the method can achieve an effect of quick and accurate sea ship target detection, and is of high robustness to spectral noise and cluttered marine background. The method is of great application value in aspects like marine fisheries management, marine transportation control and military maritime monitoring.

The invention belongs to the technical field of marine fishery, and particularly relates to a tidal change based automatic fish feeding net cage device. The tidal change based automatic fish feeding net cage device comprises two supports, wherein a net cage, a discharging box and a feeding box are fixedly connected between the two supports; the discharging box communicates with the net cage through a discharging pipe; the discharging box communicates with the feeding box through a first pipeline, wherein one support is fixedly connected with a material storage box; the material storage box communicates with the feeding box through a second pipeline; a floating plate is connected between the two supports in a sliding mode; the discharging pipe penetrates through the floating plate; and a push plate is connected into the feeding box in a sliding mode. The floating plate can be driven to float upwards through rising of seawater during tide rising, a closing mechanism is automatically opened in cooperation with the pushing force of the pushing plate, automatic feeding of fish schools is achieved, tedious manual tide change monitoring is avoided, and meanwhile the labor loss of manual feeding is reduced.

The invention relates to a marine ranch selective automatic fishing device and process, and belongs to the field of marine fishery resource development fishing. The marine ranch selective automatic fishing device comprises a bait pool and a fishing net rack, the bottom of the bait pool is provided with a feeding hole, the top surface of the fishing net rack is fixedly connected with the bottom surface of the bait pool, and grading net rack grooves are formed in four side surfaces of the fishing net rack; a plurality of mutually independent buoys capable of floating in the bait pool are arranged in the bait pool, each buoy is connected with a connecting rod, the connecting rods are arranged in the grading net rack grooves, and detachable grading net racks are arranged on the connecting rods; the connecting rods are arranged in the grading net rack grooves and drives the grading net racks to ascend and descend along with floating and sinking of the buoys. According to the marine ranch selective automatic fishing device and process, by throwing bait that planned catch fishes like to eat, fish schools are attracted to gather the bait, and classified catching of fish varieties is achieved; by selecting a grading net with proper mesh specification, young fish schools with the mesh specification smaller than that of the grading net are filtered out, the fishes which can be caught and have the mesh specification larger than that of the grading net are blocked, and fish body grading catching is achieved.

The invention discloses a mooring rope. The mooring rope comprises a rope core, an inner layer, a middle layer, an outer layer, wherein the rope core, the inner layer, the middle layer, and the outer layer are arranged in sequence from the inside to the outside, and are filled with filler. The roper core is formed by intwisting twelve single threads which are made from super-polymer polyethylene fiber, the inner layer is formed by intwisting six strands of rope strands made from dacron around the rope core, the middle layer is formed by intwisting ten strands of rope strands made from dacron around the inner layer, the outer layer is formed by knitting single threads which are made from super-polymer polyethylene fiber, and the filler is rubber and is vulcanized so as to solidify the inner layer, the middle layer and the outer layer into one. The mooring rope is applicable to complicated and rugged environments like marine fishery and petroleum engineering, is high in seawater-corrosion resistance and chemical corrosion resistance, and can be utilized in a high-temperature environment.

The invention discloses a fishpond bottom dredging device for marine fishery breeding. The fishpond bottom dredging device for marine fishery breeding comprises a ship body, wherein the ship body comprises a sludge chamber, a drainage chamber, an air cylinder chamber and a power chamber, a baffle is arranged in the sludge chamber in a connected mode and divides the sludge chamber into a sludge discharging area and a drying area, a pump is arranged above the sludge discharging area in a connected mode, one end of the pump is connected with a sludge suction device, the other end of the pump is connected with a sludge discharging pipe, the other end of the sludge discharging pipe extends into the sludge discharging area, the sludge discharging area is connected with a filter screen on the side wall of one side of the lower part of the baffle, two sides of the filter screen are correspondingly connected with a sludge scraping plate and a driving device, the power chamber is internally connected with electricity storage equipment and a first motor, the power output end of the first motor is connected with a first hollow connecting rod, the other end of the first connecting rod is internally connected with a second motor in a sealed mode, and the power output end of the second motor penetrates through the first connecting rod to be connected with paddles. The fishpond bottom dredging device for marine fishery breeding has the advantages that water in sludge can be drained, and the sludge and the water are correspondingly discharged out of the ship body after being separated.

The invention discloses an intelligent autonomous navigation underwater detection robot. The robot comprises an aircraft main body, an upper camera is fixedly mounted at the top of the aircraft main body, a lower camera is arranged at the center of the bottom surface of the aircraft main body, and water quality monitoring sensors are fixedly mounted on the lower surface of the aircraft main body and located on the left side and the right side of the lower camera. A streamline design is adopted for the appearance of the robot, and the appearances of multiple rotors, bionic bodies and the like are adopted according to requirements; various requirements are met; motion control is flexible; different sensors are carried for different machines, so that different technical requirements are met; meanwhile, remote control is not needed, autonomous path planning and autonomous cruising can be achieved, and cameras at different positions can flexibly avoid obstacles while obtaining information; and the robot can reduce dependence on underwater wireless communication, meanwhile, the project makes full use of the subject advantages of aquaculture, mechanical manufacturing, marine fishery and the like, and the robot has a wider application prospect.

The invention relates to a method for preparing low-value seashell oligopeptide based on simulated digestion, and belongs to the technical field of marine biochemical engineering. The preparation method comprises the following steps: 1, preprocessing shellfish protein; 2, performing simulated digestion and enzymolysis; 3, separating and preparing shellfish protein oligopeptide. According to the preparation method, the simulated digestion method is carried out to prepare high-content seashell oligopeptide under mild preparation conditions, so that the safety is high; the prepared oligopeptide is higher in stability and can be absorbed well by a human body; a new concept is provided for the preparation of food protein source bioactive peptide as well as the efficient utilization of byproducts in processing of marine fisheries.

The invention belongs to the technical field of ocean energy and marine fishery, and particularly relates to an OWC power generation unit and a floating net cage integrated with an OWC power generation unit array. The OWC power generation unit is designed, and when waves act on the OWC power generation unit to cause a water body in an air chamber to do heave motion, wave energy is converted into potential energy of a water column at the moment; and an oscillating water column generates positive pressure and negative pressure on air in the air chamber, and then the air flowing severely drives an air turbine system above the air chamber to do work and generate electricity, so that potential energy-mechanical energy-electric energy conversion is achieved. A plurality of OWC power generation units are arranged in a circular array through OWC air chamber partition walls and are integrated with the floating net cage, so that all-weather, stable and continuous self-energy-supply operation of the deepwater net cage is guaranteed, and the concepts of space sharing and marine use of ocean energy are met.

The invention relates to the technical field of marine fishery resource investigation, in particular to a remote investigation device and method for macrobenthos in a marine ranch. A plurality of gridlines are arranged on an organic glass sealing cover to form a plurality of irradiation grid areas, and under the action of an annular lamp tube, a plurality of grid projection areas are correspondingly formed on the bottom face of an underwater remote video facility support. Shooting is carried out through an underwater remote video camera, underwater remote video images of investigation pointsare analyzed through a video information remote receiving PC, and the variety name and number of the macrobenthos in the marine ranch in each grid projection area are observed and recorded correspondingly, so that the problem of low investigation efficiency in the prior art is solved; and meanwhile, according to the remote investigation device and method for the macrobenthos in the marine ranch, diving sampling by a diver is not needed so that the investigation work cost of the macrobenthos in the marine ranch can be greatly reduced, and the fine degree of investigation work is also improved.

The invention discloses an offshore wind turbine foundation integrated accessory component coupled with an aquaculture net cage and a mounting method, and relates to the field of marine ranches and offshore wind power. The structure comprises an integrated accessory component main body structure which is firmly installed on a single-pile foundation main body structure through a bracket fixedly arranged on the outer wall of the single-pile foundation main body structure in advance, and a semi-surrounded aquaculture net cage is fixedly arranged on the outer wall of the integrated accessory component main body structure in a surrounding mode. The aquaculture net cage is matched with the integrated accessory component main body structure and the single pile foundation main body structure, so that integral construction and integrated installation are realized. According to the offshore wind turbine foundation, integrated development of offshore wind power resources and marine fishery resources is achieved, the sea area around the offshore wind turbine foundation is fully utilized, and the effects of intensively and efficiently utilizing the sea area space, repairing marine ecology and improving economic benefits are achieved.

The invention provides a multifunctional marine ranching environment monitoring device, and belongs to the technical field of aquaculture. The problem of marine fishery environment monitoring in the prior art is solved. The multifunctional marine ranch environment monitoring device comprises sensors, the sensors are distributed on a flexible cylinder, one end of the flexible cylinder is retracted and released by a retracting and releasing device, the other end of the flexible cylinder is turned outwards to be connected to a ring body, the cylinder body, turned outwards, of the flexible cylinder is an outer side cylinder body, the cylinder body, located on the inner side, of the flexible cylinder is an inner side cylinder body, an air pressure control device for controlling the air pressure in a cavity between the inner side barrel body and the outer side barrel body is arranged, the ring body is fixed to a horizontal shaft, the horizontal shaft is rotationally arranged on a vertical shaft, and the vertical shaft is controlled by a motor to rotate. According to the invention, the environmental parameters of the marine ranching at different positions can be conveniently monitored, the environment at different water depths can be measured, the environment at different positions of a water layer can also be measured, and the sensor can be conveniently protected.

The invention discloses a fishery information service method based on a position, and the method comprises the following steps: S1, enabling a fishing boat terminal to collect the current geographic position, current environment meteorological information and fishing boat terminal region marine environment information, and transmitting the information to an early warning service networking group in real time; and S2, enabling the early warning service networking group to update the fishing boat terminal information in real time, and transmit the acquired information to the meteorological networking group and the Beidou positioning networking group. A fishing boat terminal collects a current geographic position, current environment meteorological information and fishing boat terminal area marine environment information; marine meteorological information and fishing boat terminal position information are shared in real time; collision of the fishing boat terminal due to severe weather and early prevention and timely avoidance of severe difference under the severe weather are effectively avoided, the sailing safety is improved, limitations of existing marine fishery information services are effectively changed, and the marine fishery information service system is high in pertinence and wide in application range.

The invention discloses a solar underwater animal vocal music cognitive recognition monitoring buoy system, and belongs to the technical field of marine acoustics. The buoy system comprises a floatingspherical shell, an audio and video system and a lug boss, wherein the lug boss is arranged on the floating spherical shell; a flexible solar panel is arranged on the surface of the lug boss; a satellite antenna is arranged at the top of the lug boss; a satellite communication module, a control module, a data collector and a transcoder are arranged in the floating spherical shell; the audio and video system comprises an underwater player and a plurality of underwater cameras; the underwater cameras are connected with the transcoder; the transcoder is connected with the data collector; the control module is respectively connected with the underwater player, the data collector and the satellite communication module; and the satellite communication module is connected with the satellite antenna arranged at the top of the lug boss. The solar underwater animal vocal music cognitive recognition monitoring buoy system provided by the invention has the advantages that the vocal music cognitive competence of underwater animals can be conveniently researched by researchers; a blue harmonious marine ecosystem can be favorably built; and early-stage basic data is provided for great development of marine fishery.

The invention relates to the field of fisheries, in particular to a large-area buffering oxygen supply device for marine fisheries. The device comprises an installation rack with one end hinged to a ship, a telescoping device is arranged on one side of the installation rack and used for supporting the installation rack and adjusting the angle of the installation rack, an installation cylinder is fixedly installed on the installation rack, and a vertical pipe capable of rotating is installed in the installation cylinder. The vertical pipe is driven by a driving assembly to rotate, the upper endof the vertical pipe is connected with an oxygen delivery pipe through a rotary connection piece, and the other end of the oxygen delivery pipe is connected with an oxygen pump arranged on the installation rack. A plurality of air outlet pipes communicated with an inner cavity of the vertical pipe are installed on the circumference of the lower end of the vertical pipe, bubble guide plates are fixedly installed on the upper sides of the air outlet pipes, strengthening plates are installed on the upper sides of the bubble guide plates, and the other ends of the strengthening plates are fixedlyarranged on the vertical pipe. The device is novel in structural design, large-area oxygen supply to aquaculture can be achieved, the device stably and reliably works, and popularization and application are facilitated.

The invention provides a marine fishery safety production management system based on a video processing technology. The marine fishery safety production management system comprises a video shooting module, a data transmission module, an identification processing module and an early warning module. The video shooting module is used for acquiring a monitoring video of a monitoring area; the data transmission module is used for transmitting the monitoring video to the identification processing module; the identification processing module is used for carrying out identification processing on the monitoring video and judging whether a violation operation event occurs in the monitoring video or not; and the early warning module is used for sending an early warning prompt to a manager when identifying that an illegal operation event exists in the monitoring video. According to the invention, the monitoring video is automatically identified and processed, so that illegal operation events in the monitoring area can be timely and comprehensively found. The invention can be combined with the traditional management by a team leader and the recognition of violation operation in a monitoring video by human eyes, thereby realizing the management of marine fishery safety production by combining multiple management modes, and facilitating the timely discovery of hidden dangers in the fishery production process.

The invention relates to an automatic cage pulling device of cage type operation in fishery production. The technical problems that for a traditional fishery cage picking mode, the labor intensity is high, the manpower consumption is large, the technique is high, the cost is high and the risk is high are mainly solved. The automatic cage pulling device of the cage type operation in the fishery production comprises a power source, a trapping cage, a main rope and an unhooking mechanism, the unhooking mechanism comprises a fixed frame, a driving part and a connector, the connector comprises a shell, an elastic part, a lock tongue and an inner core, the shell is provided with a chute which is communicated with an inner cavity of the shell, the lock tongue moves in a sliding mode along the chute, a locking notch is formed on the portion, corresponding to the chute, of the side face of the inner core, the lock tongue is clamped in the locking notch, and the driving part pulls the lock tongue to slide out of the locking notch of the inner core. Due to the fact that the automatic cage pulling device of the cage type operation in the fishery production adopts a mechanical structure to achieve unhooking, the mechanism reliability is strong, the manufacturing cost is low, use of the structure is easy, and the the automatic cage pulling device of the cage type operation in the fishery production is specially suitable for marine fishery production operation; the operation efficiency is greatly improved, the labor production cost is greatly reduced, the operation safety is improved, and the extremely high production benefit and economic benefit are achieved.

The invention provides a marine fishery oriented ship target detection method and system. The provided method comprises the following steps: S1, acquiring a marine environment image; s2, performing image recognition processing on the marine environment image, and dividing the marine environment image into a sky area image and a marine area image; s3, performing ship target detection in the ocean region image to obtain a region in which a ship target is suspected to exist; s4, performing angular point detection on the region in which the ship target is suspected to exist, and obtaining seed angular points; and S5, performing morphological processing based on the seed angular points to obtain a ship target. The system provided by the invention is used for implementing the method. According to the invention, the situation that the time consumption is long and the ship target cannot be found in time because the whole marine environment image needs to be identified and processed can be avoided, and the safety of marine fishery operation can be ensured.

The invention provides a marine ranching environment monitoring device, and belongs to the technical field of aquaculture. The problem of marine fishery environment monitoring in the prior art is solved. The marine ranching environment monitoring device comprises sensors, the sensors are distributed on a flexible cylinder, one end of the flexible cylinder is retracted and released by a retracting and releasing device, the other end of the flexible cylinder is turned outwards to be connected to a floating body, the cylinder body, turned outwards, of the flexible cylinder is an outer side cylinder body, the cylinder body, located on the inner side, of the flexible cylinder is an inner side cylinder body, and a sinker is arranged between the inner side cylinder body and the outer side cylinder body. According to the invention, environmental parameters of marine ranches with different depths can be monitored conveniently, the measurement depth can be adjusted conveniently, the sensor can be retracted and released conveniently, and the sensor can be protected.

The invention relates to the technical field of marine fishery resource restoration, in particular to a blepharipodaliberata releasing method. The method is characterized by including the following steps of firstly, investigating the water quality and background of a sea area and selecting a releasing sea area, wherein a substrate is dug in a fine sand area of a low tide area of an intertidal zonein the dry tide time duration during a heavy flooding tide, and whether blepharipodaliberata exists in the dug fine sand or not is detected; secondly, getting larvae out of a pool, wherein the larvaeare get out of the pool to be released on a sea when the maximum wind power of the sea is seven grades or lower during the heavy flooding tide and it is sunny, cloudy or rainy; thirdly, conducting releasing on the sea. By means of the method, the survival rate of the larvae getting out of the pool and entering a wild environment can be increased, the blepharipodaliberata fishery resource amountis restored, the genetic resources of blepharipodaliberata are protected, stable fishery resources are provided for fishermen, and the method has the advantages of both protection and utilization.

The invention provides a braided rope for a marine fishery trawl. The braided rope for the marine fishery trawl comprises a strength component, wherein the strength component is wrapped with a braidedsheath, spiral strands penetrate through the braided sheath, the spiral strands are spirally arranged around the braided sheath, and the pitch of the spiral strands is larger than that of the braidedsheath. The braided rope is low in cost and easy and convenient to implement, the netting gear resistance can be reduced, the trawl lifting force can be increased, the rope manufacturing cost can beeffectively reduced compared with a traditional spiral rope, the drag resistance in water can be effectively reduced compared with a traditional braided rope, and better lifting force is shown on thewater surface, so that energy conservation and consumption reduction are achieved, and the fishing cost is reduced.