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An evaluation method for rational stocking of filter-feeding fish in reservoirs

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

Active Publication Date: 2022-02-08
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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  • An evaluation method for rational stocking of filter-feeding fish in reservoirs
  • An evaluation method for rational stocking of filter-feeding fish in reservoirs
  • An evaluation method for rational stocking of filter-feeding fish in reservoirs

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1. Sample layout:

[0048] 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.

[0049] 2. Sampling tool:

[0050] 10L plexiglass water collector + 50m rope and No. 13 plankton net (mesh 0.112mm).

[0051] 3. Monitoring indicators:

[0052] 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);

[0053] 3-2. Plankton biomass, including phytoplankton and zooplankton biomass;

[0054] 3-3. Granular...

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Abstract

The invention discloses an evaluation method for rational stocking of filter-feeding fish in reservoirs, including sample collection, sample processing and measurement, biomass calculation, estimation of natural fish productivity in the reservoir, and evaluation of reasonable stocking quantity of filter-feeding fish bighead carp and silver carp. The evaluation method of the present invention is based on bait biological resources such as plankton and organic debris in the reservoir area, and evaluates the stocking amount of filter-feeding fish by calculating its annual production output, so as to realize the high efficiency of reservoir fishery while protecting the water environment. , Reasonable use.

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 Patents(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