51results about How to "Reduce fishing costs" patented technology

The invention relates to a controlled release bait material and a preparation method thereof. The controlled release bait material refers to small pills, micro-pills, microcapsules, microspheres, particles or sticks prepared from raw materials including a basic material, a feed attractant, a bonding agent, a hydrophilic high-polymer material, a water-insoluble high-polymer material, a quick-release material, a filler, a colorant, a flavoring agent and the like through a preparation means; and the controlled release bait material can be coated for improving the controlled release effect. The invention further discloses a preparation method of the bait material. The controlled release material has rapid and lasting attracting force on fishes, the fish attracting time can be adjusted according to the habit of a fisherman and the habits of fishes, the food ration and frequency of fishes are increased, the fishing success rate can be increased, the food intake of fishes in cultivation of fishes can be increased, the corrosion ratios of remnant feeds and feeds in water bodies are reduced, the utilization ratios of feeds is increased, and the water body environmental pollution is lowered. The preparation method provided by the invention is suitable for industrial production.

The invention discloses a sea surface LED lamp trapping (fishing) cage, which consists of a floating pontoon, a fishing cage, a battery box, a trapping box, and LED lamp modules, wherein the floating pontoon is arranged on the top of the fishing cage, and a battery pack is arranged on the bottom of the fishing cage. The sea surface LED light trapping (fishing) cage is characterized in that the fishing cage is formed by connecting a plurality of sections of fishing cages; the side wall of each section of fishing cage is provided with a plurality of fishing cage ports with electric gates; a support above each section of the fishing cage is evenly distributed with a plurality of the LED lamp modules along the periphery of the fishing cage; the trapping box are arranged at the center inside each section of the fishing cage, are positioned on fishing cage port supports, and correspond to the fishing cage ports at the same time; and the side wall of the fishing cage is provided with a plurality of the fishing cage ports, and the inner wall of the fishing cage at upper and lower sides of the fishing cage ports is provided with the LED lamp modules. Soft spines and the electric gates which are used for preventing fish from escaping outward are arranged at inner ports of the fishing cage ports. The sea surface LED light trapping (fishing) cage has the advantages that a fishing tackle and a fishing method of the invention greatly reduce fishing cost, reduce the labor intensity of the fishing, and improve fishing amount and fishing efficiency.

The invention discloses a method for keeping fresh aquatic products by cold accumulation on board, which comprises the following steps of: keeping cold brine in a cold accumulation tank at the temperature of -30 to -5 DEG C in advance by using an onboard cooling system, performing indirect cold heat exchange on seawater in a cooling tank and the brine in the cold accumulation tank to decrease the temperature of the seawater in the cooling tank to 10 to -10 DEG C, and quickly cooling catches in the cooling seawater tank to the central temperature of-5 to 10 DEG C to meet cooling requirements. The invention also provides a device for keeping fresh the aquatic products by cold accumulation on board, which comprises the cold accumulation tank, the cooling seawater tank and the onboard cooling system. The method and the device for keeping fresh the aquatic products by cold accumulation on board are effectively adapted to onboard operation, reduce energy consumption and cost and improve the fresh-keeping quality.

The invention provides a leech catching method. According to the technical scheme, the leech catching method comprises the following steps of 1, adjusting the water depth of a leech cultivation pool so that the water level of the leech cultivation pool is controlled at 0.3-0.5 meters; 2, clearing away the float grass and different floating sundries in a leech cultivation water area; 3, uniformly splashing oxygen consumption microbes with a certain solubility in a leech cultivation water body; 4, covering a layer of black plastic film or placing a foam floating plate on the water surface of the leech cultivation water body; and 5, manually collecting leeches which are adsorbed on the pool walls of the periphery of the cultivation water body, the covered plastic film or the foam floating plate by utilizing a microcheiria brail. Through adopting the leech catching method provided by the invention, most of the leeches in the cultivation water body can be caught once, thus the leech catching efficiency is greatly improved, the cost of catching is reduced, and the cultivation economic benefits are improved.

The invention provides an intelligent sea-surface trapping fishing cage. The intelligent sea-surface trapping fishing cage comprises a photovoltaic power generator, a floating box, a control processor, a Beidou short message module, a fish school detector, an LED module, a luring box, a lithium battery and a fishing net and is characterized in that an intelligent control mode is used, the fish school detector is used to detect the fish school outside the fishing cage, the control processor precisely controls the LED module and the luring box to lure the fish school, and the Beidou short message module is utilized to transmit information to fishing staff so as to allow the fishing staff to position and collect the fishing cage. A fishing method using the intelligent sea-surface trapping fishing cage greatly lowers fishing cost and fishing labor intensity and increases fishing efficiency, and the situation that the fishing staff return without fishes is avoided.

A method for preserving aquatic products at sea includes the following steps: an on-board refrigeration system is used to refrigerate the antifreeze solution, and the antifreeze solution is used as a main cold source, and temperatures at centers of fish bodies drop rapidly to achieve rapid cooling and reduce activity of endogenous enzymes and inhibit proliferation of microorganisms by direct or indirect heat exchange with captured catches. The antifreeze solution contains edible alcohol, propylene glycol, glycerol, calcium chloride, sodium chloride, amino acids, Antarctic krill protein hydrolysate with average molecular weight of 50-100 KDa, surfactant and water, and the mass percentage of each component is as follows: edible alcohol 15%-30%, propylene glycol 10%-30%, glycerol 2%-15%, calcium chloride 1%-10%, sodium chloride 3%-10%, amino acid 0.1%-0.15%, Antarctic krill protein hydrolysate 0.01%-0.3%, surfactant 0.005%-0.5%, and the balance is water.

The invention discloses a fishing device used for a river bank. The fishing device used for the river bank comprises two horizontal supporting rods, a plurality of connection rods arranged between thetwo horizontal supporting rods, a supporting board arranged on the two connection rods, a roll arranged on the supporting board, a wound-type motor used for driving the roll to rotate, a fishing linewith one end fixedly connected with the peripheral surface of the roll, a limiting fixed pulley block, an automatic fishhook removing mechanism, a fish collecting mechanism and a fishing line swing mechanism. The fishing device used for the river bank has the characters that the fishing cost is effectively reduced, the fishing efficiency is improved, and the automation degree is high.

The invention discloses a device for trapping finless eel and loach, which is characterized by comprising a cylindrical shell (11), and a door (1) sunken inwards, a direct current small motor (2) with a wheel blade, bait (5) and a conical second door (6) which are arranged from one end to the other end of the shell in sequence, wherein clearances are reserved between a conical base and the shell except for four points of the conical base which are connected with the shell for fixation, and the conical base has certain elasticity; the other end of the shell is plugged up by a wooden plug (10); the small motor is connected with an insulated wire (3) of which the other end is connected with a battery pack (7); the battery pack is placed in a sealed bottle (8) in which an openable sealing cover (9) is further arranged; and an openable and closable door (4) is arranged on the shell beside the bait. The device for trapping finless eel and loach has the advantages of low trapping cost, time and labor conservation and high return.

The invention discloses a yellow-head catfish pond preset net cage dry-up method, relates to a yellow-head catfish pond dry-up method, and especially relates to a preset net cage dry-up method; the method can prevent anoxic asphyxia, has no damage to the yellow-head catfish, and saves labor cost; a fish gathering pit is arranged on a yellow-head catfish pond water outlet, and surrounded by a casting cement wall; a water inlet is preserved with a 1mX0.5m cross section for building cellular bricks, and the bricks are for draining in a drying pond process. 9 node meshes of 2cm can form the preset net cage; an upper opening of the net cage is sewed with drop lines in surrounding; the bottom of the net cage is sewed with an X-shape drop line; the preset net cage is arranged in the fish gathering pit, and net cage is fully grounded; the surrounding of the net cage opening uses an anchor to insert bottom mud for fixation. In dry-up pond fishing operation, the water draining is stopped until the water level reaches 20cm depth from the preset net cage opening; the net cage opening is pulled up when all yellow-head catfish automatically enter the fish gathering pit preset net cage, thus completing dry-up pond fishing.

The invention relates to a high-yield and high-efficiency fishery breeding method for hilly pond reservoirs. Firstly, breeding conditions are transformed, wherein transformation measures of conductingdredging and deep digging, leveling and obstacle removal on the bottoms in front of dams of the hilly pond reservoirs and reinforcing protection slopes around a reservoir area are adopted, partitionfencing isolation breeding facilities are arranged, anti-escape facilities are reinforced and improved, and ground-cage fishing nets are fixedly arranged; an impeller-type, waterwheel-type and microporous oxygen aeration combined oxygen aeration mode is configured; then two interbreeding modes including the mode of mainly breeding large-sized tilapia mossambica species and interbreeding carps andthe mode of mainly breeding large-sized tilapia mossambica species and interbreeding carps, grass carps and the like are adopted. A new breeding mode is put forward for high-yield and high-efficiencyinterbreeding of the hilly pond reservoirs, and a feasible scheme is put forward for the high-efficiency utilization of the star-studded hilly pond reservoirs. According to the method, the comprehensive mode of breeding condition transformation, species interbreeding, water quality monitoring and product monitoring is adopted, a demonstration mode of a high-yield and high-efficiency ecological breeding technology for the hilly pond reservoirs is put forward through summarization and conclusion, and reference is provided for comprehensive development and utilization, ecological fishery breedingand dual use of water in the hilly pond reservoirs.