CN117063887A - A three-stage ecological breeding and recycling method of crabs, bullfrogs, and crucian carp - Google Patents

Abstract

The invention discloses a three-stage ecological breeding and recycling method of crabs, bullfrogs and crucian carp, and relates to the technical field of aquaculture. The water in the crab breeding pond is used to flow into the frog pond to form flowing water to raise frogs. The water in the frog pond It flows into the crucian carp and silver carp ponds. After adjusting the water quality in three or more crucian carp and silver carp ponds, the water quality reaches the standard and then flows into the crab breeding pond, forming a closed-loop ecological breeding circulation system. The bullfrogs cultured have fewer diseases, which solves the problem of environmental pollution caused by breeding and increases The market supply of bullfrogs promotes the development of the entire bullfrog industry chain.

Description

A three-stage ecological breeding and recycling method of crabs, bullfrogs, and crucian carp

Technical field: The present invention belongs to the technical field of aquaculture, and specifically relates to a three-stage ecological breeding and recycling method of crabs, bullfrogs, and crucian carp.

Background technique

Bullfrogs were introduced into China in the 1960s. After decades of breeding development, they have occupied an important position among my country's special aquaculture species. Bullfrogs grow quickly and have a short breeding cycle. They can be put on the market in about 6-7 months. The protein content of bullfrogs is about 90%, and their feed efficiency is high. They can effectively utilize plant proteins such as soybean meal and peanut meal. In addition, bullfrogs save energy and water. It is an aquaculture animal that can adapt to high-density breeding and has high yield per mu. It is an aquaculture animal that efficiently produces high-quality protein and is suitable for key development. The current annual breeding output is nearly 700,000 tons, driving the development of seed, animal health, feed, circulation, catering and other industries, and the output value of the entire industry chain exceeds 100 billion yuan.

Bullfrog breeding models mainly include frogs raised in running water and frogs raised in changing water. The water depth of running water frogs is 10cm, and the feces and residual bait are taken away through the running water. The breeding volume is 30,000 to 50,000 kilograms/acre; the water depth of still water frog breeding is 30~40cm, and the remaining water is passed through the pond. Place frog boards, and the breeding volume is 20,000 to 40,000 kilograms/mu. Breeding frogs in still water requires frequent water changes, which costs a lot, and the breeding disease rate is higher than that of frogs raised in running water. Regardless of whether you raise frogs in running water or change the water, there will be bullfrog excrement or excess bait in the old water, causing serious eutrophication of the water body and causing ecological environmental pollution in the river.

Crabs are cultured in an ecological environment with abundant aquatic plants, fresh water quality, sufficient dissolved oxygen and rich biological feed. They can eat organic waste, algae and plankton in the water, and can effectively purify the water quality.

Silver carp and bighead carp are filter-feeding fish that live in the upper layers of water bodies and can adapt to various water bodies. Silver carp and bighead carp mainly eat plankton in the water body and consume residual bait and feces at the bottom of the pond, which can purify and regulate water quality.

Crucian carp lives in the middle and lower layers of the water body. It eats algae and plankton in the water body, which plays a role in purifying water quality. It can also convert organic matter in the water into useful fish biomass, improving biodiversity and ecological balance in the water body. .

Contents of the invention

In order to solve the problems of the above background technology, the present invention provides a three-stage ecological breeding and recycling method of crabs, bullfrogs, and crucian carp. The water in the crab breeding pond flows into the frog pond to form flowing water for raising frogs. The water in the frog pond It flows into the crucian carp and silver carp ponds. After adjusting the water quality in three or more crucian carp and silver carp ponds, the water quality reaches the standard and then flows into the crab breeding pond, forming a closed-loop ecological breeding circulation system. The bullfrogs cultured have fewer diseases, which solves the problem of environmental pollution caused by breeding and increases The market supply of bullfrogs promotes the development of the entire bullfrog industry chain.

The technical solution provided by the invention is: a three-stage ecological breeding and recycling method of crabs, bullfrogs, crucian carp and silver carp. Specifically, the water outlet in the crab pond is connected to the water inlet of the frog pond, and the water outlet of the frog pond is connected to the crucian carp. The water inlets of the silver carp ponds are connected. There are three or more crucian carp and silver carp ponds connected in pairs to adjust the water quality. The water outlet of the ③ crucian carp and silver carp pond is connected to the water inlet of the crab pond, forming a closed-loop ecological breeding circulation system.

Further, it is characterized in that the specific method of breeding bullfrogs: the bullfrog breeding pond is an earthen pond, with a 50cm wide field bank in the middle, a plastic waterproof film is fixed in the frog pond, the slope of the plastic waterproof film is 15°, and the distance between the plastic waterproof film and the pond ground is 15cm. The water depth is 10cm, and a frog board is placed in the pool.

Further, it is characterized in that the Bullfrog Frog Pond is equipped with a greenhouse. The top of the greenhouse is double-layered and the two sides are single-layered. During the winter, the curtains on both sides of the greenhouse are fixed and can play a role in thermal insulation; in the summer, the curtains on both sides of the greenhouse are fixed. Lift up for ventilation, and add an awning on the top of the greenhouse.

Further, it is characterized in that an insect catching lamp is installed on the middle field bank of the frog pond.

Further, it is characterized in that the area of No. 1 crucian carp and silver carp pond connected to the bullfrog pond is twice that of the other two crucian carp and silver carp ponds.

Further, it is characterized in that the breeding density of silver carp and bighead carp is 300~500/acre, the breeding density of crucian carp is 2000~2500/acre, the breeding density of bullfrog is 80~100/㎡ frog board, and the breeding density of crab is 600- 800 birds/acre.

The advantage of the invention is that the water from the crab pond flows into the frog pond to form running water for raising frogs. The water from the frog pond flows into the crucian carp and silver carp pond, and the feces of the bullfrog flows into the crucian carp and silver carp pond. The crucian carp can eat bullfrog leftover bait, and the silver carp can eat algae. , zooplankton and other natural bait to achieve the purpose of purifying water quality. The water quality is adjusted through three or more crucian carp and silver carp ponds. After the water quality reaches the standard, it flows into the crab pond, forming a closed-loop ecological breeding cycle system. This breeding model not only saves energy and reduces emissions, but also It can solve the problem of environmental pollution caused by breeding, and the bullfrogs under this breeding method have less diseases and high breeding efficiency, which increases the market supply of bullfrogs and promotes the development of the entire bullfrog industry chain.

Description of the drawings

Figure 1 is a schematic diagram of the three-stage ecological breeding and recycling of crabs, bullfrogs, and crucian carp;

Figure 2 is a schematic diagram of the bullfrog pond;

100-crab pond; 200-frog pond; 210-plastic waterproof film; 220-field ridge; 230-insect catching lamp; 300-crucian carp and silver carp fish pond; 400-pond connected water pipe.

The present invention will be further described below in conjunction with the accompanying drawings 1-2 and specific embodiments.

Example

(1) Preparation of breeding ponds: Prepare four 5-acre earthen ponds as crab ponds 100, frog ponds 200, and No. 2 and 3 crucian carp and silver carp ponds 300, and one 10-acre earthen pond as No. 1 crucian carp and silver carp pond 300. There is one pond for Pond 100 and Frog Pond 200, and three ponds for Crucian and Silver Carp Pond 300. Drain the water in the pond, clean the weeds in the fish pond, and expose it to the sun for 5 days. 7 days before putting in the fry, crab fry or frog fry, spread them evenly. Add quicklime for disinfection. Three days before the seedlings are released, water is released to pond 100 with a water depth of 2m. Crab pond 100 and crucian carp pond 300 are equipped with three 3kw impeller aerators.

To prepare the crab pond 100, the pond needs sufficient light, the pond slope ratio is 1:2.5, and the water depth is 1.2m. The crab pond inlet and drainage facilities follow the principle of "high irrigation, low drainage, double inlet and double row", and the water inlet is filtered with a 60-mesh screen. , a 40-mesh net is used at the upper end of the drainage outlet to prevent escape, an escape net and an anti-escape membrane are set up at the entrance of the pond, and an anti-theft net is set up around the pond.

The aquatic plants in Crab Pond 100 are evenly distributed, with submerged aquatic plants accounting for one-third of the total area and floating aquatic plants accounting for more than one-third of the total area. The submerged aquatic plant area is separated and fenced with mesh to protect the germination of aquatic plants.

Crabs are cultured according to conventional breeding methods.

To prepare a 200-meter bullfrog pond, prepare a 5-acre pond in the greenhouse. The top of the greenhouse is double-layered, and the left and right sides of the greenhouse are single-layered to keep the heat in winter. When the temperature is high in summer, open the curtains on the left and right sides of the greenhouse to dissipate heat, and add an awning above the greenhouse. Realize the cooling function.

There is a field ridge 220 in the middle of the 5-acre frog pond 200. The field ridge 220 is 50cm wide. The field ridge 220 is provided with an insect catching light 230 every 10m. An anti-escape net with a height of 1.5m is provided around the frog pond.

A plastic waterproof film 210 is fixed in the bullfrog pond 200. The slope of the plastic waterproof film 210 is 15°. The height of the plastic waterproof film 210 from the pond ground is 15cm. Water flows into the bullfrog pond 200 and the water depth is 10cm. That is, the bullfrogs are raised on the plastic waterproof film 210. A frog board is placed in the pond 200 for bullfrogs to inhabit. The water inlet and drainage facilities of Frog Pond also follow the principle of "high irrigation, low drainage, double inlet and double row". The high end of the plastic waterproof film is on the same side as the inlet and drainage facilities, and the low end of the plastic waterproof film is on the same side as the water outlet facility. It is convenient for the running water to discharge the bullfrog's feces and bait together.

Bullfrog farming is carried out according to conventional flowing water farming methods.

Preparation for crucian carp and silver carp pond 300: 5-7 days before releasing seedlings, add water to a depth of 80-100 cm into the pond, and then apply bio-organic fertilizer 15-20 kg/mu·m to cultivate plankton and prepare fish species for future entry into the pond. Provide biological bait. After that, apply Amino Acid Biofertilizer Shuibao once every 10-15 days at a dosage of 500g/mu·m to supplement nutrients for plankton beneficial algae, accelerate their reproduction speed and increase density.

No. 1 crucian carp and silver carp pond 300 is a 10-acre pond, and the other two are 5-mu ponds. The breeding density of silver carp and bighead carp in No. 1 crucian carp and silver carp pond 300 is 400~500 fish/mu, and the breeding density of crucian carp is 1800~2200 fish. /mu; the remaining 2 crucian carp and silver carp ponds are 300 breeding four major carps, namely herring, silver carp, bighead carp and grass carp, with 2000-3000 fish per mu, of which the grass carp breeding density is 1200 fish/mu, and the silver carp and bighead carp breeding density is 300-400 tail/acre, and the herring breeding density is 300 tail/acre.

Crucian carp and silver carp are cultured according to conventional breeding methods.

The specific operation is as follows: the water outlet of the crab pond 100 and the water inlet of the frog pond 200 are connected through the pond connecting water pipe 400. The water outlet of the frog pond 200 is connected to the water inlet of the No. 1 crucian carp and silver carp pond 300 through the pond connecting water pipe 400. The No. 1 crucian carp is connected through the pond connecting water pipe 400. The water outlet of the crucian carp pond 300 is connected with the water inlet of the ② crucian carp pond 300. The water outlet of the ② crucian carp pond 300 is connected with the water inlet of the ③ crucian carp pond 300. The water outlet of the ③ crucian carp pond 300 is connected with the crab. The water inlets of the pool 300 are connected. The comprehensive recycling of these three stages of breeding can not only save energy, but also the feces residues of bullfrogs do not pollute the environment. In addition, in this breeding method, bullfrogs are cultured in flowing water, with less breeding diseases and low breeding costs, which is more consistent with The concept of national energy conservation and environmental protection.

Example

Location: Nantong, Jiangsu

Breeding area: 25 acres of crab pond, 25 acres of bullfrog pond, 50 acres, 25 acres and 25 acres of crucian carp and silver carp pond respectively.

Breeding time: 2021.1-2022.10

Crabs, bullfrogs and crucian carp were cultured according to the circulating water ecological breeding method described in Example 1. As a result, the yield per mu of bullfrogs was 50,000 jins and the mortality rate was 4.3%.

Claims (7)

1. A three-stage ecological breeding and recycling method of crabs, bullfrogs, and crucian carp and silver carp, specifically as follows: the water outlet in the crab pond and the water inlet of the frog pond are connected through a connecting pipe, and the water outlet of the frog pond is connected to the water inlet of the crucian carp and silver carp pond. The water inlets are connected through connecting pipes. There are 3 or more crucian carp and silver carp pools. Two of the three crucian carp and silver carp pools are connected through connecting pipes. The water outlet of No. 3 crucian carp and silver carp pool is connected to the water inlet of the crab pond through connecting pipes to form a Closed-loop ecological breeding circulation system. 2. A three-stage ecological breeding and recycling method of crabs, bullfrogs and crucian carp according to claim 1, characterized in that the specific method of breeding bullfrogs: the bullfrog breeding pond is an earthen pond with a 50cm wide ridge in the middle. , a plastic waterproof film is fixed in the frog pond, the slope of the plastic waterproof film is 15°, the distance between the plastic waterproof film and the pond ground is 15cm, the water depth is 10cm, and a frog board is placed in the pond. 3. A three-stage ecological breeding and recycling method of crabs, bullfrogs, and crucian carp and silver carp according to claim 1, characterized in that the bullfrog frog pond is provided with a greenhouse, the top of the greenhouse is double-layered, and the two sides are single-layered. During the winter, the curtains on both sides of the greenhouse are fixed. When the summer is hot, the curtains on both sides of the greenhouse are lifted for ventilation, and an awning is added on the top of the greenhouse. 4. A three-stage ecological breeding and recycling method of crabs, bullfrogs, and crucian carp according to claim 1, characterized in that an insect-catching lamp is installed on the middle field ridge of the frog pond. 5. A method for recycling three sections of ecological breeding of crabs, bullfrogs, and crucian carp according to claim 1, characterized in that the area of the No. 1 crucian carp pond connected to the bullfrog pond is the area of the remaining two crucian carp ponds. 2 times the size of Silver Carp Pond. 6. A method of three-stage ecological breeding and recycling of crabs, bullfrogs, and crucian carp and silver carp according to claim 1, characterized in that the silver carp and bighead carp breeding density is 300 to 50.5 fish/mu, and the crucian carp breeding density is 2000~2500/mu, bullfrog breeding density is 80~100/㎡ frog board, crab breeding density is 600-800/mu. 7. A method for recycling three-stage ecological breeding of crabs, bullfrogs, and crucian carp and silver carp according to claim 5, characterized in that the breeding density of silver carp and bighead carp in the No. 1 crucian carp and silver carp pond is 400 to 500 fish/ mu.