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A matching model of large yellow croaker-asparagus comprehensive breeding

A technology of large yellow croaker and Astragalus, which is applied in fish farming, climate change adaptation, gardening and other directions to achieve the effects of increasing dissolved oxygen, increasing anti-disturbance and high economic benefits

Active Publication Date: 2017-09-29
SHANGHAI OCEAN UNIV
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  • Claims
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Problems solved by technology

Study finds that 20% of wet and dry bait fed to salmon in seawater cages is not consumed as output waste

Method used

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  • A matching model of large yellow croaker-asparagus comprehensive breeding
  • A matching model of large yellow croaker-asparagus comprehensive breeding

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Experimental program
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Embodiment 1

[0080] The experiment was carried out in the aquaculture sea area of ​​Yantian Port, Sansha Bay, Fujian Province. The experimental site map of Yantian Port in Sansha Bay is as follows: figure 1 shown. In the experimental area, the size of the cages is generally 3.3m×3.3m×3.6m, and every two small cages are connected to form a large cage, that is, the size is 3.3m×6.6m×3.6m. There are 11 large fish rafts in the experiment. Net cages, about 4,500 large yellow croakers are cultured in each large cage, with a total of 4.95×10 4 During the experiment, 17 tails died, which were ignored this time due to the relatively small value relative to the total amount of breeding.

[0081] Hang and raise asparagus in 12 vacant large net cages (the specification is 3.3m * 6.6m * 3.6m). When clamping seedlings, carry out in a cool place, and use the cluster clamping method to clamp seedlings of asparagus. Hang 3kg of seedlings on a 7-meter-long seedling rope, reserve 20cm in length at the fro...

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Abstract

The invention discloses a large yellow croaker-asparagus integrated culture matching mode. Asparagus is cultured in large yellow croaker culturing cages in a hung mode, and a whole cage culturing area serves as an integrated system; the reasonable matching culturing quantities of large yellow croakers and the asparagus are calculated by taking dissolved inorganic nitrogen and dissolved inorganic phosphorus as balance indexes and monitoring the net flux of input and output nutrient salt pollution loads flowing through the system according to the nitrogen and phosphorus nutrient salt circulation path and the nutrient salt absorbing capacity of the asparagus. According to the large yellow croaker-asparagus integrated culture matching mode, the water eutrophication condition of the culturing area can be effectively improved, the nutrient salt released by cage culturing is quickly absorbed by large kelp, and therefore the kelp yield is increased; the dissolved oxygen content in water is increased through the photosynthesis of the large kelp, better living environment and habitat environment are supplied to fishes, the fish harvesting yield is increased, disease occurrence is reduced, and therefore the good ecological benefits and economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of seawater aquaculture, and specifically relates to a large yellow croaker-asparagus comprehensive breeding matching mode established by utilizing the complementarity between fish cage culture and large-scale economic algae in ecological niches. Background technique [0002] In recent years, the aquaculture industry, especially the marine aquaculture industry, has developed rapidly in my country and even around the world with its unique advantages, constantly meeting people's demand for aquatic products. However, due to the single ecological structure of mariculture and the defects of farming methods and scales, the pollution of the sea area for aquaculture is becoming more and more serious, gradually affecting the coastal ecological environment, resulting in a decrease in coastal marine biodiversity. Seawater cage culture mostly adopts high-density bait feeding culture. After long-term large-scale culture,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01G33/00
CPCA01G33/00A01K61/00Y02A40/81
Inventor 霍元子韦章良何培民韩红宾于克锋吴海龙张建恒杨建丁平真王艺
Owner SHANGHAI OCEAN UNIV
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