Multi-trophic-level ecological aquaculture method

An ecological breeding and multi-nutrition technology, applied in botany equipment and methods, fish farming, climate change adaptation, etc., can solve the problem of low feed utilization rate, improve the utilization efficiency of materials and energy, realize functional complementarity, Improving the effect of sustainable development status

Inactive Publication Date: 2017-04-26
ZHEJIANG OCEAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These two farming methods are suitable for terrestrial freshwater farming, and they do not carry out multi-level nutrient distribution, and the utilization rate of feed is not high.

Method used

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  • Multi-trophic-level ecological aquaculture method

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Experimental program
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Effect test

Embodiment 1

[0019] Multi-nutrient level ecological breeding method, the specific operation is:

[0020] 1) Choose a breeding site: Choose an area with clear water quality, sufficient sunlight, small water level drop, and slow water flow in the breeding farm area;

[0021] 2). Farming distribution: The shallow sea fish fry are placed on the upper layer of the marine ecological aquaculture cage 1, and the stocking amount is 100-130 fish / m2. Plant the seedlings of benthic filter-feeding organisms in the lower layer at a rate of 500-1000 heads per square meter. Plant green algae on the anchor rope 2 connected to the cage at a planting density of 20-40 plants / cm 2 . Through the combination of organisms in different nutrient niches, the materials put into the cage aquaculture system can be fully circulated multiple times, thereby improving the utilization efficiency of materials and energy in the system, achieving functional complementarity between different aquaculture systems, and reducing nets. ...

Embodiment 2

[0024] Multi-nutrient level ecological breeding method, shallow sea fish is large yellow croaker, benthic filter-feeding biological seedlings are sea cucumber, and green algae is hijiki as examples:

[0025] 1) Choose a breeding site: Choose an area with clear water quality, sufficient sunlight, small water level drop and slow water flow in the breeding farm area;

[0026] 2). Farming distribution: Put large yellow croaker fry in the upper layer of the marine ecological aquaculture cage 1, and the amount of stock is 120 fish / m2. Put the sea cucumber seedlings in the lower layer, the quantity is 800 heads / m2, and the hijiki is planted on the anchor rope 2 connected to the cage, and the planting density is 30 trees / cm 2 . Through the combination of organisms in different nutrient niches, the materials put into the cage culture system can be fully recycled for multiple times, thereby improving the utilization efficiency of materials and energy in the system, realizing the functional c...

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Abstract

The invention provides a multi-trophic-level ecological aquaculture method. A fish-alga two-layer ecological aquaculture mode is adopted, and fish aquaculture is divided into an upper layer and a lower layer; and shallow sea fish is aquacultured on the upper layer, and benthoic filter-feeding bionts are aquacultured on the lower layer. The multi-trophic-level ecological aquaculture method has the beneficial effects that by combination of bionts at different trophic niches, substances fed into a net cage aquaculture system can be fully circulated for multiple times, so that the utilization efficiency of the substances and energy in the system is improved, function complementation between different aquaculture type systems is realized, and discharge of net cage aquaculture wastes to the surrounding environment is reduced. The multi-trophic-level aquaculture mode is a 'carbon gathering' aquaculture mode aiming to enable bait feeding type net cage aquaculture to maintain a long-term sustainable development state, increase the economical and environmental benefits of a unit aquaculture system and reduce 'ecological footprint'.

Description

Technical field [0001] The invention relates to the technical field of mariculture, in particular to a multi-nutrient level ecological breeding method. Background technique [0002] With the improvement of aquaculture technology and the increase in human demand for aquatic products, the aquaculture industry has developed rapidly worldwide. In 2010, my country's aquaculture output exceeded 36.73 million tons, accounting for 61.4% of the world's total output. The development of aquaculture has made important contributions to solving poverty, ensuring food safety, promoting marine economic development, and increasing fishermen’s employment and income. However, in recent years, with the increase of breeding density and the continuous expansion of breeding scale, the deterioration of the ecological environment of the breeding sea has become more and more serious. The excretion of aquaculture waste and the use of chemicals have further aggravated the degree of environmental eutrophic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01G33/00A23K50/80
CPCA01G33/00A01K61/00Y02A40/80Y02A40/81Y02A40/818
Inventor 蔡惠文张梦梦蔡霞沈奇奇赵晟李铁军任永华
Owner ZHEJIANG OCEAN UNIV
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