Shellfish raft culture method of supplying biological bait in autumn in remote coastal waters

Abstract

The invention provides a shellfish raft type breeding method for supplying biological baits in autumn in the far-shore sea area. According to the technical scheme, the device is mainly composed of a net frame (1), a floating tube (2), a mud conveying valve (3), a soft mud valve (4), a mud suction pump (5), a mud suction hose (6), a precipitation tank (7), a binding pipe rope (8), a mud suction device (9), a mud suction gap (10), a mud suction pipe (11), a screening cloth bag (12), a bag rope(13), an iron anchor (14), a buoy (15), a floating rope (16), a pile body (17), a breeding cage (18) anda pile rope (19). The method is a breeding method for providing the biological bait for the growth of the far-shore sea area raft type breeding shellfish, and the soft mud rich in nutritive salt is provided to cultivate the plankton in the seawater, so that the problem that shellfish bait is insufficient in the autumn or other time is solved, and shellfish growth is promoted. The method is greenand environment-friendly, and is convenient for wide popularization of farer and deeper sea area raft type breeding shellfish.

Description

technical field [0001] The invention relates to the technical field of shellfish raft culture, in particular to a shellfish raft culture method for supplying biological bait in autumn in remote sea areas. Background technique [0002] In shallow sea raft farming of shellfish, with the continuous expansion of the scale of farming, the safety problems of shellfish farming are becoming more and more prominent. The deterioration of the farming environment, the decline of the quality of the cultured shellfish, and the outbreak of diseases have seriously hindered the shellfish farming. healthy and sustainable development of the industry. At present, shellfish raft culture areas are mostly located in bays near the coast, where the wind and waves are small, the seawater exchange capacity is poor, and they are greatly affected by the discharge of land-based sewage. Shellfish culture cages are tied to fixed pile foundation cables. When the breeding environment changes or is polluted,...

AI Technical Summary

Problems solved by technology

[0002] In shallow sea raft farming of shellfish, with the continuous expansion of the scale of farming, the safety problems of shellfish farming are becoming more and more prominent. The deterioration of the farming environment, the decline of the quality of the cultured shellfish, and the outbreak of diseases have seriously hindered the shellfish farming. healthy and sustainable development

At present, shellfish raft culture areas are mostly located in bays near the coast, where the wind and waves are small, the seawater exchange capacity is poor, and they are greatly affected by the discharge of land-based sewage. Shellfish culture cages are tied to fixed pile foundation cables. When the breeding environment changes or is polluted, the cultured shellfish cannot be avoided. Severe pollution often leads to the occurrence of diseases, or reduces the quality and output of the cultured shellfish, causing serious economic losses to the farmers.

Therefore, the shellfish raft culture facilities are moved to seas far away from the coast, where the water quality is good and pollution-free, and the above problems can be avoided. However, the far-shore seas are rich in plankton in winter, spring and summer, and less in autumn. Autumn is a critical period for the growth and reproduction of shellfish. The lack of bait directly affects the growth of shellfish, and also directly affects the output and quality of farmed shellfish.

In summer, the temperature of the seawater in the distant sea area rises, and the light is strong, so that the nutrients in the seawater are fully transformed and used for the reproduction and growth of plankton. In autumn, the nutrients in the seawater become less and cannot reproduce for a large number of plankton. The growth provides nutrients, and the amount of plankton decreases accordingly; but under the same conditions in autumn, the coastal waters can be replenished with nutrients brought by rivers and rain in time, and it is difficult for these nutrients to be exchanged to the far coastal waters, so, in autumn The decrease of plankton in the remote sea area has seriously restricted the development of shellfish raft culture in this area

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