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Evaluation method for reasonable stocking of reservoir filter-feeding fishes

A filter-feeding and reservoir-based technology, which is applied in the evaluation of reasonable stocking of filter-feeding fish in reservoirs, can solve the complex problems of reservoir environment, water quality changes and fishery production effects, and achieve the effect of reasonable distribution

Active Publication Date: 2019-08-13
YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reservoir environment is complex, and the factors affecting water quality changes and fishery production effects are intricate

Method used

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  • Evaluation method for reasonable stocking of reservoir filter-feeding fishes
  • Evaluation method for reasonable stocking of reservoir filter-feeding fishes
  • Evaluation method for reasonable stocking of reservoir filter-feeding fishes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Sample layout:

[0049] Taking the Huohe Reservoir in the Duhe River System in Zhushan County, Hubei Province as an example, the average water depth of the Huohe Reservoir is 33.9m, and the storage capacity is 1.3×10 8 m 3 , the usable breeding area is 4,000 mu, and the storage capacity within 10m is 0.383×10 8 m 3 . According to the shape and location of the reservoir, three sampling sites were set up in the upstream, midstream and downstream areas of the reservoir.

[0050] 2. Sampling tool:

[0051] 10L plexiglass water collector + 50m rope and No. 13 plankton net (mesh 0.112mm).

[0052] 3. Monitoring indicators:

[0053] 3-1. Water quality indicators, including water temperature, dissolved oxygen (DO), pH, conductivity, transparency, total nitrogen (TN), ammonia nitrogen (TAN), total phosphorus (TP), chemical oxygen demand (COD), chlorophyll a(Chl.a);

[0054] 3-2. Plankton biomass, including phytoplankton and zooplankton biomass;

[0055] 3-3. Granular...

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Abstract

The invention discloses an assessment method for reasonable stocking of reservoir filter-feeding fishes. The assessment method comprises the steps of sample collection, sample treatment and determination, biomass calculation, reservoir natural fish productivity estimation and reasonable stocking amount assessment of filter-feeding bighead carps and silver carps. According to the evaluation method,on the basis of bait organism resources such as reservoir area plankton and organic debris, the stocking amount of the filter-feeding fishes is evaluated by calculating the annual production yield, and efficient and reasonable utilization of reservoir fishery is achieved while the water environment is well protected.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to an evaluation method for rational stocking of filter-feeding fish in reservoirs. Background technique [0002] Large open water bodies such as lakes and reservoirs are not only important water source reserves, but also an important supply base for freshwater aquatic products, especially high-quality aquatic products, in my country. Reservoir fishery production is dominated by cage culture. Compared with pond culture, fish culture in cages has the advantages of low cost, high quality fish products, and good breeding returns. Therefore, it also causes disordered development of cage culture in reservoirs and disordered culture. A large amount of residual bait (mainly powdered feed and fresh food), fish medicine, and feces have polluted the water quality and accelerated the eutrophication of the breeding waters. At the same time, cages are blooming all over the reservoir, blocki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02G01N33/18
CPCG06Q10/06393G06Q50/02G01N33/186
Inventor 李学梅孟子豪寇准胡飞飞杨德国朱挺兵何勇凤吴兴兵朱永久
Owner YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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