Ecological repairing method of porphyry macroalgae to eutrophic open sea area

A technology of eutrophication and ecological restoration, applied in chemical instruments and methods, seaweed cultivation, botany equipment and methods, etc.

Inactive Publication Date: 2009-11-18
SHANGHAI FISHERIES UNIV
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Problems solved by technology

Therefore, to reduce the frequency of red tides and reduce the losses caused by red tides, t

Method used

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  • Ecological repairing method of porphyry macroalgae to eutrophic open sea area
  • Ecological repairing method of porphyry macroalgae to eutrophic open sea area
  • Ecological repairing method of porphyry macroalgae to eutrophic open sea area

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Example Embodiment

[0028] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] The method for ecological restoration of the large seaweed of the genus Porphyra of the present invention in the eutrophic open sea area is implemented as follows:

[0030] (1) Selection of cultivation sea area. The eutrophication sea area for cultivation should choose the offshore radiation sandbank far away from the shore. The bottom quality should be sandy and silty sand. The beach surface is flat and the gradient is small. The tide level for the seedling net cultivation The area should be selected for 4-5 hours of dry dew during the high tide to ensure the cleanliness of the seedling net, reduce the adhesion of algae, improve the robustness of the seedlings, and facilitate the attachment of single spores. The tide level for grown vegetables should be 2.5- The 4.5-hour area is appropriate. According to climate changes, the tide level ...

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Abstract

The invention relates to an ecological repairing method of porphyry macroalgae to an eutrophic open sea area, which is mainly characterized by comprising the following steps: firstly, selecting a cultivating area; secondly, fabricating a raft frame and a lace curtain of a cultivating facility; thirdly, pulling seedlings of conchospores cultivated by a seedling net, conveying the seedling net, hanging the lace curtain and managing in a seedling stage; fourthly, managing the cultivation of raped porphyry macroalgae; fifthly, picking the ripe porphyry macroalgae; and sixthly, measuring nitrogen and phosphorus in texture. Purpuralgen is cultivated in the eutrophic open sea area, on the one hand, necessary nutrient substances are provided for the purpuralgen, on the other hand, nutrient substances in sea can be transformed out of a pollution system through the harvest of the purpuralgen, therefore, the application of the ecological repairing method can achieve the purpose of releasing and eliminating eutrophication, and also obtains higher economical value.

Description

Technical field: [0001] The invention relates to an ecological restoration method for eutrophication, in particular to an ecological restoration method for macroalgae of the genus Porphyra in open sea areas with eutrophication. Background technique: [0002] Eutrophication has always been a serious ecological problem in the waters outside the Yangtze River Estuary, central and southern Zhejiang, and other coastal waters. The areas with more serious eutrophication include coastal waters such as intensive breeding areas, key sewage outlets, and harbors with poor water exchange. According to the 2007 China Marine Environmental Quality Bulletin released by the State Oceanic Administration, the heavily polluted waters in the East China Sea are mainly concentrated in the Yangtze Estuary, Hangzhou Bay and the coast of Ningbo. The main pollutants are active phosphate, inorganic nitrogen and petroleum. The pollution sources that cause water eutrophication mainly come from land-based...

Claims

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Application Information

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IPC IPC(8): C02F3/32A01G33/00
CPCY02A40/80Y02W10/10Y02W10/37
Inventor 何培民徐姗楠
Owner SHANGHAI FISHERIES UNIV
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