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Efficient freshwater fish polyculture method

A freshwater fish and high-efficiency technology, applied in the field of freshwater fish farming, can solve the problems of low breeding efficiency, no unified guidance, polyculture of fish species, and different stocking amounts, so as to improve the stocking density, avoid competition, increase the Effects of Fishermen's Income

Inactive Publication Date: 2021-04-06
马鞍山市徽农农业科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the polyculture mode is widely used in freshwater fish farming. Although it can increase the breeding density, at present, the polyculture fish species and the amount of stocking are not the same. There is no unified guidance, and most of them have low breeding benefits.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of efficient polyculture method of freshwater fish that the present invention proposes, comprises the following steps:

[0022] (1) rest pond: choose a pond with an area of ​​5 mu, level the bottom of the pond, clear the pond for disinfection, control the depth of silt at the bottom of the pond to be 10-15cm, inject new water, and the depth of water is 1.5-1.7m, 10 days before the fish species are stocked, Apply decomposed chicken manure at an application rate of 80kg / mu to cultivate water quality;

[0023] (2) Planting of aquatic plants: plant bitter grass and duckweed scatteredly in the pond, and control the coverage of aquatic plants to 20-30% in the middle and late stages;

[0024] (3) Selection of fish species: select fry of silver carp, bighead carp, grass carp, herring and bream with the same specifications and no injuries. The specifications of each fry are 40-50g / tail, 100-150g / tail, 50- 60g / tail, 30-40g / tail, 30-40g / tail, the stocking density is 28kg / m...

Embodiment 2

[0031] A kind of efficient polyculture method of freshwater fish that the present invention proposes, comprises the following steps:

[0032] (1) resting pond: select a pond with an area of ​​8 acres, level the bottom of the pond, clear the pond for disinfection, control the depth of silt at the bottom of the pond to be 13-16cm, inject new water, and the depth of water is 1.5-1.7m. 15 days before the fish species are stocked, Apply decomposed pig manure at an application rate of 110kg / mu to cultivate water quality;

[0033] (2) Planting of aquatic plants: plant bitter grass and duckweed scatteredly in the pond, and control the coverage of aquatic plants to 20-30% in the middle and late stages;

[0034] (3) Selection of fish species: select fry of silver carp, bighead carp, grass carp, herring and bream with the same specifications and no injuries. The specifications of each fry are 40-50g / tail, 100-150g / tail, 50- 60g / tail, 30-40g / tail, 30-40g / tail, the stocking density is 30k...

Embodiment 3

[0041] A kind of efficient polyculture method of freshwater fish that the present invention proposes, comprises the following steps:

[0042] (1) resting pond: select a pond with an area of ​​10 mu, level the bottom of the pond, clear the pond for disinfection, control the depth of silt at the bottom of the pond to be 16-20cm, inject new water, and the water depth is 1.5-1.7m, 15 days before the fish fingerlings are stocked, Apply decomposed sheep manure at an application rate of 90kg / mu to cultivate water quality;

[0043] (2) Planting of aquatic plants: plant bitter grass and duckweed scatteredly in the pond, and control the coverage of aquatic plants to 20-30% in the middle and late stages;

[0044] (3) Selection of fish species: select fry of silver carp, bighead carp, grass carp, herring and bream with the same specifications and no injuries. The specifications of each fry are 40-50g / tail, 100-150g / tail, 50- 60g / tail, 30-40g / tail, 30-40g / tail, the stocking density is 32k...

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Abstract

The invention discloses an efficient freshwater fish polyculture method, and relates to the technical field of freshwater fish culture. The method comprises following steps: preparation of a pond; planting of aquatic plants; fingerling selection: fries of silver carp, bighead carp, grass carp, black carp and bream are selected, the specifications of the fries are 40-50g per fry, 100-150 g per fry, 50-60 g per fry, 30-40 g per fry and 30-40 g per fry respectively, the stocking density is 28-32 kg / mu, and the stocking weight of the fries accounts for 29%-32%, 8%-12%, 37%-40%, 6%-8% and 10%-13% of the total weight of the fries; fingerling stocking: the silver carp, the grass carp and the bream are put into the pond for breeding firstly, and then the bighead carp and the bream are put into the pond; bait feeding; control for water quality; daily management; and fishing. According to the method, fingerlings at different water body depths are subjected to polyculture, and the number of fishes eating baits and the number of fishes in fertile water are reasonably proportioned, so that fish growth is promoted; the water environment is improved by controlling the coverage rate of the aquatic plants; and the fries are thrown in batches, the survival rate reduction caused by the competition effect of larger fries on smaller fries is avoided, and the survival rate of the fries is increased.

Description

technical field [0001] The invention relates to the technical field of freshwater fish culture, in particular to a high-efficiency polyculture method for freshwater fish. Background technique [0002] Freshwater fish refers to fish that live in fresh water, and there are many kinds, accounting for about 40% of the total fish. Most of my country is located in the temperate zone and subtropical zone, with a mild climate and abundant rainfall. It is a big country for freshwater fish farming. In recent years, with the rapid development of my country's economy and the improvement of people's living standards, the demand for fish has increased year by year, which has prompted an intensive development trend in aquaculture, especially freshwater fish farming. At present, the polyculture mode is widely used in freshwater fish farming. Although it can increase the breeding density, the current polyculture fish species and stocking volume are not the same. There is no unified guidance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01G20/00
CPCA01K61/10A01G20/00Y02A40/81
Inventor 徐文杰徐元元张建涛
Owner 马鞍山市徽农农业科技发展有限公司
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