CN103766252B - Fresh-water fishes high-yielding non-pollution cultural method - Google Patents

Abstract

The invention discloses a high-yield and pollution-free breeding method for freshwater fish, which comprises the following steps: requirements for breeding ponds; water irrigation and water quality adjustment; selection of fish species; disinfection of fish bodies; reasonable stocking; breeding; water quality control; Add a certain amount of special fertilizer for aquaculture and yeast in the breeding pond and fish moderately. The invention effectively reduces the dosage of drugs and artificial feed through the disinfection and scientific feeding of fish ponds and fish bodies, and the freshwater fish cultivated have high quality, safety and no pollution; the invention mixes fish species living in different water depths It can be raised in a variety of varieties, and the space of different water depths in the fish pond is effectively used. Through orderly and batch fishing, it not only increases the number of breeding but also increases the income of fishermen.

Description

High-yield and pollution-free breeding method for freshwater fish

technical field

The invention relates to the technical field of aquaculture, in particular to a high-yield and pollution-free breeding method for freshwater fish.

Background technique

Freshwater fish refers to fish living in fresh water, with a wide variety, 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. However, on the one hand, fishermen only pay attention to the quantity and ignore the quality of fish, and on the other hand, they lack scientific and professional farming techniques, resulting in low quality of freshwater fish and a decline in food safety.

Contents of the invention

The main technical problem to be solved by the present invention is to provide a high-yield and pollution-free breeding method for freshwater fish, which can solve the problems of indiscriminate use and drug abuse of freshwater fish in intensive culture, low quality of fish, unsafe eating, etc., and effectively improve the production of fish .

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a high-yield and pollution-free breeding method for freshwater fish, comprising the following steps:

(1) Requirements for breeding ponds: away from pollution, convenient drainage and irrigation, flat pond bottom, clear pond disinfection and 15cm of silt;

(2) Irrigation and water quality adjustment: pour clear water with a depth of 1.5m into the breeding pond, and apply an appropriate amount of special bio-fertilizer or bio-fertilizer preparation for aquaculture to adjust the water quality to oily green or tea-brown;

(3) Fish species selection: choose lively, robust and highly disease-resistant fish species, including herring, grass carp, silver carp, bighead carp, carp and crucian carp.

(4) Disinfection of fish body: Disinfect the fish species selected in step (3) in 5% edible salt water for 10 minutes;

(5) Reasonable stocking: the sterilized fish species in step (4) are stocked in step (2) according to the ratio of 1: 5: 3: 1: 2: 4 for herring: grass carp: silver carp: bighead carp: carp: crucian carp. ), the stocking density is 1500 tails/mu;

(6) Feeding: Within 20 days after feeding, feed a certain amount of artificial feed every day. When the fish grows to 300g/tail, add farmyard manure; after 15 days of fertilization, apply artificial feed every 2 days;

(7) Water quality control: After the fish species are stocked, add water every 5 to 20 days, and the water change volume is 30 to 50 cm;

(8) After adding water each time, add a certain amount of aquaculture special fertilizer and yeast to the breeding pond;

(9) Moderate fishing: When the fish body grows to 1500-2000g/tail, catch fish species with high stocking density once a week to ensure that there is enough fish activity space in the breeding pond.

In a preferred embodiment of the present invention, the pollution in the step (1) refers to "three industrial wastes", domestic sewage, medical sewage and polluted running water.

In a preferred embodiment of the present invention, in the step (6), the dosage of the artificial feed is 3000 mg/acre, which is divided into three times in the morning, middle and evening, and the dosage of the three times is 2: 3: 1 .

In a preferred embodiment of the present invention, in the step (9), the weekly fish catch is 100-300 fish/mu.

In a preferred embodiment of the present invention, the amount of fishing is carried out according to the number of herring: grass carp: silver carp: bighead carp: carp: crucian carp is 1: 5: 3: 1: 2: 4.

The beneficial effects of the present invention are: a high-yield and pollution-free breeding method for freshwater fish of the present invention, through the disinfection and scientific feeding of fish ponds and fish bodies, the dosage of drugs and artificial feed is effectively reduced, and the quality of the freshwater fish cultivated is safe High performance and no pollution; the present invention adopts polyculture of fish species living in different depths of waters, with various varieties, effectively utilizes the space of different depths of waters in fish ponds, and fishes in batches in an orderly manner, which not only increases the number of cultures but also increases increase the income of fishermen.

detailed description

The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Embodiments of the invention include:

A high-yield and pollution-free breeding method for freshwater fish, comprising the following steps:

(1) Requirements for breeding ponds: stay away from the pollution of "three industrial wastes", domestic sewage, medical sewage and polluted running water, etc., convenient drainage and irrigation, flat bottom of the pond, disinfect with quicklime and wheat bran, etc., and finally put 15cm in the bottom of the pond of silt to serve as soil for algae growth;

(2) Irrigation and water quality adjustment: pour clear water with a depth of 1.5m into the breeding pond, and apply an appropriate amount of special biological fertilizer or biological fertilizer preparation for aquaculture to promote the growth of phytoplankton and algae in the fish pond, and adjust the water quality to Oil green or tea brown;

(3) Fish species selection: choose lively, robust and highly disease-resistant fish species, including herring, grass carp, silver carp, bighead carp, carp and crucian carp.

(4) Disinfection of fish body: Disinfect the fish species selected in step (3) in 5% edible salt water for 10 minutes;

(5) Reasonable stocking: the sterilized fish species in step (4) are stocked in step (2) according to the ratio of 1: 5: 3: 1: 2: 4 for herring: grass carp: silver carp: bighead carp: carp: crucian carp. ), the stocking density is 1500 tails/mu;

(6) Feeding: Within 20 days after release, feed artificial feed at an amount of 3000 mg/mu every day, three times in the morning, noon and night, and the amount of feeding for the three times is 2: 3: 1. When the fish body grows to 300 g/mu At the end of the year, add farmyard manure to promote the growth of natural bait, such as earthworms, caterpillars, mussel snails, aquatic plants, etc.; after 30 days of fertilization, the fish pond contains a certain amount of natural bait at this time, which can reduce the amount of artificial feed. Change to apply artificial feed every 2 days;

(7) Water quality control: After the fish species are stocked, add water every 5 to 20 days according to the season and the condition of the fish pond, and the water change volume is 30 to 50 cm;

(8) After adding water each time, add a certain amount of aquaculture special fertilizer and yeast to the breeding pond;

(9) Moderate fishing: When the fish body grows to 1000-2000g/tail, catch fish species with high stocking density once a week. On the one hand, ensure that there is enough fish activity space in the breeding pond, and the catch rate is 100-300 fish/tail mu, and the catch is based on the ratio of herring: grass carp: silver carp: bighead carp: carp: crucian carp in the ratio of 1: 5: 3: 1: 2: 4.

The freshwater fish cultured according to the above method has a variety of fish species, and effectively utilizes the space of different water depths in the fish pond; through the disinfection and scientific feeding of fish ponds and fish bodies, the consumption of drugs and artificial feed is effectively reduced. The freshwater fish has high quality and safety, no pollution, and a large quantity, and can be fished in batches in an orderly manner, which improves the effective utilization rate of fish ponds and increases the income of fishermen.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the content of the description of the present invention, or directly or indirectly used in other related technical fields, shall be The same reasoning is included in the patent protection scope of the present invention.

Claims (2)

1. a high-yield and pollution-free breeding method for freshwater fish, is characterized in that, comprises the following steps: (1) Requirements for breeding ponds: away from pollution, convenient drainage and irrigation, flat pond bottom, clear pond disinfection and 15cm of silt; (2) Irrigation and water quality adjustment: pour clear water with a depth of 1.5m into the breeding pond, and apply an appropriate amount of special bio-fertilizer for aquaculture, and adjust the water quality to oily green or tea-brown; (3) Fish species selection: choose lively and robust fish species with strong disease resistance, including herring, grass carp, silver carp, bighead carp, carp and crucian carp; (4) Disinfection of fish body: Disinfect the fish species selected in step (3) in 5% edible salt water for 10 minutes; (5) Reasonable stocking: Stock the sterilized fish species in step (4) according to the ratio of 1: 5: 3: 1: 2: 4 for herring: grass carp: silver carp: bighead carp: carp: crucian carp in step (2). ), the stocking density is 1500 tails/mu; (6) Feeding: Within 20 days after feeding, feed a certain amount of artificial feed every day. When the fish body grows to 300g/tail, add farmyard manure; after 15 days of fertilization, apply artificial feed every 2 days; (7) Water quality control: After the fish species are stocked, add water every 5 to 20 days, and the water change volume is 30 to 50 cm; (8) After adding water each time, add a certain amount of aquaculture special fertilizer and yeast to the breeding pond; (9) Moderate fishing: When the fish body grows to 1500-2000g/tail, fish species with high stocking density are caught once a week to ensure that there is enough space for fish activities in the breeding pond; the amount of fish caught per week is 100 ~ 300 fish/mu, the fishing quantity is based on the ratio of herring: grass carp: silver carp: bighead carp: carp: crucian carp in the ratio of 1: 5: 3: 1: 2: 4. 2. The high-yield and pollution-free breeding method for freshwater fish according to claim 1, characterized in that the pollution in the step (1) refers to "three industrial wastes", domestic sewage, medical sewage and polluted running water.