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Method for biological repairing eutrophication of subtropical zone sea water fish culture in net cage area

A net cage fish farming and eutrophication technology, applied in the field of bioremediation, can solve the problems of unresolved continuous restoration, and achieve the effect of facilitating large-scale production, easy promotion, and simple stocking equipment

Inactive Publication Date: 2006-05-10
XIAMEN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no systematic methods and technologies for the restoration of eutrophication in mariculture in subtropical sea areas at home and abroad, especially the problem of continuous restoration throughout the year

Method used

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  • Method for biological repairing eutrophication of subtropical zone sea water fish culture in net cage area
  • Method for biological repairing eutrophication of subtropical zone sea water fish culture in net cage area
  • Method for biological repairing eutrophication of subtropical zone sea water fish culture in net cage area

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Asparagus was selected as the restoration organism, and asparagus was stocked in seawater by hanging culture. Adopt the hoisting raft frame shown in Figure 1, the raft frame is provided with seven bamboo poles 1, the bamboo poles 1 are parallel to each other, the ends of the bamboo poles 1 are connected by the main rope 2 to form a rectangular frame body, the length of the frame body is 20m, and the width is 4.5mm. m, a tether (or a seedling rope) 3 for clamping and hanging asparagus seedlings is provided between the bamboo poles 1, and 4 plastic foam balls 4 are provided on the frame body to keep the frame body floating on the water surface, and the frame body passes through 4 Root fixed rope 5 is fixed on the bamboo pile 6. Four adjacent fixed ropes 5 share a bamboo pile 6, as figure 2 As shown, this can reduce the material and workload, and can also offset the horizontal tension between the four fixed ropes, so that the bamboo stakes are stronger and the overall sta...

Embodiment 2

[0025] like image 3 Shown, the bioremediation bottom sowing net cage of the eutrophication of said subtropical seawater cage fish culture area is provided with net cage body 8, and net cage body 8 upper openings are provided with two bamboo poles 9 parallel to each other left and right, rope 10 and The two ends of bamboo pole 9 are connected, and rope 10 is provided with 4 plastic foam strips 11, is used for keeping net box body 8 to be suspended on the water surface. Net cage body 8 is fixed on the fixture by rope 10, or hangs on the fish culture net cage. The cage body can be a cuboid, the cage body length is 10m, the width is 4m, and the depth is about 1m. Hang under the raft frame for hanging asparagus, or hang under the empty frame of the fish culture cage, hang a Gracilaria culture cage under every 3 fish culture cage frames.

[0026] Sowing at the bottom of the cage can prevent the restoration organisms from being eaten by other fish (such as common bluefish) that gr...

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Abstract

The invention is a bioremediation method of eutrophication in semi-tropical marine fish cage culture region, relating to the cultivation of a kind of edible seaweed, especially the water cultivation nearby or in the fish cage for the bioremediation of the eutrophication. Its steps: selecting algae seeds and breeding them in seawater, where the initially-bred biomass density is less than 800 kg / mu; collecting as the biomass density greater than 1000 kg / mu and then the biomass density is less than 600 kg / mu. The bioremediation hanging culture raft is provided with at least two parallel-arranged poles, the end parts of these poles are connected by ropes or brackets into a frame boby, there are stakeropes between poles, and the frame body are provided with at least 1 supended body and fixed by at least four fixing ropes. It combines algae cultivation with fish cage culture for mixed culture, used for bioremediation of eutrophication of marine culture.

Description

technical field [0001] The invention relates to the cultivation of seaweed, especially the hydroponics near or in the net cage, which is used for the bioremediation of eutrophication in subtropical seawater net cage fish culture areas. Background technique [0002] Mariculture is an important part of the economy of my country's coastal areas. However, the eutrophication caused by marine animal breeding leads to frequent occurrence of diseases and red tides, which not only pollutes the environment, but also endangers the aquaculture industry, causing heavy economic losses. The control of offshore eutrophication cannot be solved only by administrative or legal means, but it is realistic and feasible to use large marine plants to efficiently extract nutrients from seawater and transfer them out of the water body. That is, seaweed cultivation is carried out in eutrophic sea areas for animal breeding, and seaweed is used to absorb nutrients such as N and P in the water body, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32A01G33/00
CPCY02A40/80
Inventor 焦念志梁红星汤坤贤方少华徐永健钱鲁闽袁东星洪华生林亚森游秀萍王克坚沈东煜陈敏儿林泗彬王永胜王海洲魏艳王春光林丽玉
Owner XIAMEN UNIV
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