CN114573112A - Fishery grower synthesizes and grows ecological farming systems of inner loop - Google Patents
Fishery grower synthesizes and grows ecological farming systems of inner loop Download PDFInfo
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- CN114573112A CN114573112A CN202210216597.8A CN202210216597A CN114573112A CN 114573112 A CN114573112 A CN 114573112A CN 202210216597 A CN202210216597 A CN 202210216597A CN 114573112 A CN114573112 A CN 114573112A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/60—Flowers; Ornamental plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
- A01K63/006—Accessories for aquaria or terraria
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
- C02F3/325—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae as symbiotic combination of algae and bacteria
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The invention belongs to the technical field of ecological breeding, and particularly relates to a comprehensive internal-circulation ecological breeding system for fishermen, which comprises a high-level fish culture pond, a primary treatment pond, a secondary treatment pond and a tertiary treatment pond which are arranged in the same breeding room, wherein the breeding room is a greenhouse; the high-position fish pond adopts high-density cultured fish, microbial floras are put in the high-position fish pond, the utilization rate of feed is improved by utilizing a biological floc technology, the culture tail water in the high-position fish pond is purified step by step through a primary treatment pond, a secondary treatment pond and a tertiary treatment pond, and crops are planted in the primary treatment pond, the secondary treatment pond and the tertiary treatment pond; the fish feed of this farming systems is from the production application, and fish feed utilization ratio is high, and the fodder is with low costs, and the crops annual average mu output of planting is high, is fit for the industrialization and plants, and tail water purifying effect is good, and water pump after the purification goes into high-order pond cyclic utilization of breeding fish, and the resource utilization who breeds the tail water is high, and tail water treatment efficiency is high, is fit for the industrialization and breeds.
Description
Technical Field
The invention belongs to the technical field of ecological breeding, and particularly relates to a comprehensive internal-circulation ecological breeding system for fishermen.
Background
In the aquaculture industry, the aquaculture water contains fish feces and feed residues, so that ammonia nitrogen in the aquaculture water is increased, the survival of fish is not facilitated, the aquaculture tail water needs to be discharged for improving the survival rate of the fish, but the direct discharge can pollute the environment, and therefore, the idea of combining aquaculture and planting is provided; the existing culture and breeding system generally adopts 'three dams and four ponds' to purify culture tail water, the occupied area is large, the area ratio of a culture water body to the purified water body is 1:10, the tail water treatment efficiency is low, the tail water resource utilization rate is low, the system is not suitable for industrial culture, feed used for culture needs to be purchased outside, the purchase price is high, the utilization rate of fish feed in a fish pond is low, and the culture cost is increased; in addition, the planted crops have strong seasonality, limited planting and low annual average acre yield, and are not suitable for industrialized planting; therefore, how to overcome the above technical problems and disadvantages is a problem to be solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a comprehensive internal circulation ecological breeding system for fishermen, the system adopts a greenhouse to breed, so that the growth period of fish is prolonged, and a resource utilization closed-loop relation is established among animals, plants and microorganisms by utilizing a microbial fermentation technology and photo-thermal water-gas action; the utilization rate of the fish feed is improved by utilizing a biological flocculation technology, the feed cost is reduced by 80%, the plant crops planted in the treatment tank are harvested and then crushed or fermented to prepare the silage of the fish, the self-production application of the fish feed is realized, the vegetable crops planted in the treatment tank are harvested according to crops, the annual average mu yield is high, and the method is suitable for industrial planting; carry out purification treatment step by step to breeding the tail water, tail water purifying effect is good, and water pump after the purification goes into high-order pond cyclic utilization of breeding fish, breeds the resource utilization rate of tail water high, and tail water treatment efficiency has been compared and has been improved 100 times in conventional technology treatment efficiency, is fit for the industrialization and breeds.
The purpose of the invention is realized as follows:
a fisherman comprehensive internal circulation ecological breeding system comprises a high-level fish culture pond, a primary treatment pond, a secondary treatment pond and a tertiary treatment pond which are arranged in the same breeding room, wherein the breeding room is a greenhouse;
the high-position fish pond adopts high-density cultured fishes, microbial floras are put in the high-position fish pond, and the utilization rate of feed in the high-position fish pond is improved by utilizing a biological floc technology;
the aquaculture tail water in the high-order fishpond carries out purification treatment through primary treatment pond, secondary treatment pond and tertiary treatment pond to plant crops in primary treatment pond, secondary treatment pond and tertiary treatment pond, concrete processing procedure and planting and breeding mode are as follows:
(1) planting the leaf-eating grass in the primary treatment tank by taking the biochar as a matrix, breeding a proper amount of earthworms in the matrix, discharging the breeding tail water in the high-position fish pond into the primary treatment tank, and performing primary purification treatment on the breeding tail water by utilizing the biochar matrix, the leaf-eating grass, the earthworms and microbial flora;
(2) discharging the tail water subjected to primary purification treatment to a secondary treatment tank, planting water hyacinth on the water surface of the secondary treatment tank, planting watermifoil in the water body, breeding shellfish at the bottom layer, and performing secondary purification treatment on the tail water by using the water hyacinth, watermifoil, shellfish and microbial flora;
(3) and discharging the tail water subjected to the secondary purification treatment to a tertiary treatment tank, planting azolla, cress or water spinach on the water surface of the tertiary treatment tank, culturing filter-feeding fishes in the water body, culturing shellfish at the bottom layer, performing tertiary purification treatment on the tail water by utilizing the azolla, the cress, the water spinach, the filter-feeding fishes, the shellfish and microbial flora, and pumping the water subjected to the tertiary purification treatment into a high-level fish culture tank for recycling.
Further, the shellfish is a snail, a river snail, an oyster or a scallop.
Further, the filter-feeding fish is silver carp, bighead carp or paddlefish.
Furthermore, the leaf eating grass, the water hyacinth, the watermifoil and the azolla are harvested and then crushed or fermented to prepare silage which is used as feed for fishes in the high-position fish pond.
Furthermore, the feed used for the culture in the high-position fish pond is silage or protein feed prepared by fermenting livestock and poultry and animal leftovers and fermenting solid thalli.
Furthermore, the water temperature of the high-position fishpond is controlled to be 14-30 ℃, the PH value is controlled to be 6.5-8.5, and the dissolved oxygen is controlled to be 4-8 mg/L.
Furthermore, the area ratio of the culture water body in the high-position fish pond to the total purified water body in the primary treatment pond, the secondary treatment pond and the tertiary treatment pond is 1: 0.1.
Compared with the prior art, the invention has the beneficial effects that:
1. the high-position fish culture pond, the primary treatment pond, the secondary treatment pond and the tertiary treatment pond are positioned in the same culture room, the culture room is a greenhouse, the growth period of the fish is prolonged to 11 months from 5 months to half a month in the Henan area, and a resource utilization closed-loop relation is established among animals, plants and microorganisms through the action of light, heat and water vapor by utilizing a microbial fermentation technology.
2. The high-position fish pond provided by the invention adopts high-density cultured fish, and has the advantages of small floor area, small water consumption, no pollution, short construction period, simplicity in installation, no influence of regions, high density, high yield and suitability for culturing multiple varieties.
3. According to the invention, microbial flora is put into the high-position fish pond, the utilization rate of the feed in the high-position fish pond is improved by utilizing a biological flocculation technology, and the feed cost is reduced by 80%.
4. In the primary treatment tank, the biochar substrate adsorbs, filters and deodorizes the culture tail water, and the leaf eating grass absorbs nitrogen and phosphorus nutrient elements in the tail water, so that the eutrophication degree of the tail water is reduced, oxygen can be added to the water body, the COD and BOD in the tail water are reduced, and the effect of purifying the water quality is achieved; the earthworms eat the fish manure, the feed residues, the fungi and the products decomposed by microbial flora in the cultivation tail water, and carry out primary purification treatment on the tail water by utilizing a biological floc technology, and the earthworm manure provides fertilizer for the leaf-eating grass, thereby being beneficial to the growth of the leaf-eating grass in the primary treatment tank.
5. In the secondary treatment tank, the water hyacinth not only can absorb nitrogen and phosphorus elements in the tail water, but also can remove heavy metal elements in the tail water, thereby playing a role in purifying water quality; the watermifoil absorbs nitrogen and phosphorus in the tail water through roots, utilizes rich nutrient substances in the water through stem leaves, has better purification effect on the nitrogen and phosphorus in the eutrophic water, and can also provide dissolved oxygen necessary for the growth of other organisms in the water body and reduce COD and BOD in the tail water; the shellfish cultured at the bottom layer sucks bacteria, feed residues and organic nutrient substances decomposed by microbial flora in the tail water, and performs secondary purification treatment on the tail water by utilizing a biological flocculation technology, so that the water quality can be better purified, and the transparency of the water is improved.
6. In the three-stage treatment tank, the azolla can effectively remove nitrogen and phosphorus elements in the tail water, absorb heavy metals and toxic compounds, increase dissolved oxygen, reduce COD and BOD in the tail water and clear eutrophic water; the cress has strong absorption effect on ammonia nitrogen and phosphate in the tail water, and purifies eutrophic water; the water spinach can absorb nitrogen and phosphorus nutrient elements in water, reduce the content of nitrogen and phosphorus in the water body, reduce the eutrophication degree of the water body, and can also oxygenate the water body, effectively reduce ammonia nitrogen, nitrite, COD and BOD in the water and play a role in purifying the water; filtering algae, zooplankton and organic debris in the tail water by the filter-feeding fishes through a gill rake; the shellfish cultured at the bottom layer sucks bacteria, feed residues and organic nutrient substances decomposed by microbial flora in the tail water, and performs three-stage purification treatment on the tail water by utilizing a biological flocculation technology, so that the purification effect is good.
7. According to the invention, the culture tail water in the high-position fish pond is purified step by step through the primary treatment pond, the secondary treatment pond and the tertiary treatment pond, the tail water purification effect is good, the purified water is pumped into the high-position fish pond for cyclic utilization, and the resource utilization rate of the culture tail water is improved.
8. The method comprises the steps of planting the crops such as the leaf eating grass in a primary treatment pool, planting the crops such as the water hyacinth and the watermifoil in a secondary treatment pool, and planting the crops such as the azolla, the cress or the water spinach in a tertiary treatment pool, wherein the crops such as the water hyacinth and the water spinach are vegetables, are harvested according to stubbles, have high annual average acre yield and are suitable for industrial planting, and the crops such as the leaf eating grass, the water hyacinth, the watermifoil and the azolla are harvested and then are crushed or fermented to prepare silage to serve as feed for fishes in a high-position fish culture pool.
9. The area ratio of the aquaculture water body in the high-position fish pond to the total purified water body in the primary treatment pond, the secondary treatment pond and the tertiary treatment pond is 1:0.1, while the area ratio of the aquaculture water body to the purified water body in the conventional process is 1:10, and compared with the conventional process, the treatment efficiency of the tail water of the invention is improved by 100 times, so that the tail water treatment method is suitable for industrial culture.
Detailed Description
The present invention is described in more detail below by way of specific embodiments.
A fisherman comprehensive internal circulation ecological breeding system comprises a high-level fish culture pond, a primary treatment pond, a secondary treatment pond and a tertiary treatment pond which are arranged in the same breeding room, wherein the breeding room is a greenhouse, so that the growth period of fish is prolonged to 11 months from 5 months to half months in the Henan area, and a resource utilization closed-loop relation is established among animals, plants and microorganisms through the action of light, heat and water vapor by utilizing a microorganism fermentation technology;
the high-position fish pond adopts high-density cultured fishes, and has the advantages of small floor area, small water consumption, no pollution, short construction period, simple installation, no influence of regions, high density, high yield and suitability for culturing a plurality of varieties; the feed used for breeding in the high-level fish pond is silage or protein feed prepared by fermenting livestock and poultry and animal leftovers and fermenting solid thalli, the water temperature of the high-level fish pond is controlled to be 14-30 ℃, the pH value is controlled to be 6.5-8.5, dissolved oxygen is controlled to be 4-8 mg/L, microbial flora is put in the high-level fish pond, the utilization rate of the feed in the high-level fish pond is improved by utilizing a biological floc technology, and the feed cost is reduced by 80%;
the biological flocculation technology is a cultivation technology which can remarkably improve the utilization rate of feed, reduce harmful substances such as ammonia nitrogen, nitrite and the like and achieve the effect of purifying water by regulating the nutrition structure of the water body, regulating C/N by using various saccharides, regulating the microbial flora of a cultivation system and converting ammonia and nitrogen in water into mycoprotein by using microorganisms;
the aquaculture tail water in the high-order fishpond carries out purification treatment through primary treatment pond, secondary treatment pond and tertiary treatment pond to plant crops in primary treatment pond, secondary treatment pond and tertiary treatment pond, concrete processing procedure and planting and breeding mode are as follows:
(1) planting the leafy grasses in the primary treatment tank by taking the biochar as a matrix, culturing a proper amount of earthworms in the matrix, discharging culture tail water in the high-position fish culture tank into the primary treatment tank, adsorbing, filtering and deodorizing the culture tail water by the biochar matrix, absorbing nitrogen and phosphorus nutrient elements in the tail water by the leafy grasses, reducing the eutrophication degree of the tail water, enriching oxygen for a water body, reducing COD and BOD in the tail water, and playing a role in purifying water quality, eating fish manure, feed residues, fungi and products decomposed by microorganism flora by the earthworms in the culture tail water, and carrying out primary purification treatment on the tail water by utilizing a biological floccule technology, wherein the earthworm manure provides fertilizer for the leafy grasses and is favorable for the growth of the leafy grasses in the primary treatment tank;
(2) the tail water after primary purification treatment is discharged to a secondary treatment pool, water hyacinth is planted on the water surface of the secondary treatment pool, the water hyacinth not only can absorb nitrogen and phosphorus elements in the tail water, but also can remove heavy metal elements in the tail water to play a role in purifying water quality, the water body is planted with the foxtail algae, the foxtail algae absorbs nitrogen and phosphorus in the tail water through roots, rich nutrient substances in water are utilized through stems and leaves to have better purification effect on the nitrogen and phosphorus in eutrophic water, dissolved oxygen necessary for growth can be provided for other organisms in the water body, COD and BOD in the tail water are reduced, a proper amount of shellfish (spiral shell, river snail, oyster or oyster shell) is cultured at the bottom layer, the shellfish absorbs bacteria, feed residues and organic nutrient substances decomposed by microbial flora in the tail water, secondary purification treatment is carried out on the tail water by utilizing a biological floc technology, the water quality can be better purified, the transparency of water is improved;
(3) the tail water after the secondary purification treatment is discharged to a tertiary treatment pool, azolla, cress or water spinach is planted on the water surface of the tertiary treatment pool, the azolla, cress and water spinach can absorb nitrogen and phosphorus nutrient elements in the tail water, the eutrophication degree of the water body is reduced, and the azolla and the water spinach can also enrich oxygen for the water body, effectively reduce COD and BOD in the tail water and play a role in purifying water quality, filter feeding fishes (silver carps, bighead carps or paddlefish) are cultured in the water body, the filter feeding fishes filter algae, zooplankton and organic debris in the tail water through gill rakes, a proper amount of shellfish (snails, river snails, oysters or scallops) are cultured at the bottom layer, the shellfish inhales bacteria, feed residues and organic nutrient substances decomposed by microbial flora in the tail water, and the tail water is subjected to three-stage purification treatment by utilizing a biological floc technology, and the water subjected to the three-stage purification treatment is pumped into a high-position fish pond for cyclic utilization.
According to the invention, the culture tail water in the high-position fish pond is purified step by step through the primary treatment pond, the secondary treatment pond and the tertiary treatment pond, the tail water purification effect is good, the purified water is pumped into the high-position fish pond for cyclic utilization, and the resource utilization rate of the culture tail water is improved.
The method comprises the steps of planting the crops such as the leaf eating grass in a primary treatment pool, planting the crops such as the water hyacinth and the watermifoil in a secondary treatment pool, and planting the crops such as the azolla, the cress or the water spinach in a tertiary treatment pool, wherein the crops such as the water hyacinth and the water spinach are vegetables, are harvested according to stubbles, have high annual average acre yield and are suitable for industrial planting, and the crops such as the leaf eating grass, the water hyacinth, the watermifoil and the azolla are harvested and then are crushed or fermented to prepare silage to serve as feed for fishes in a high-position fish culture pool.
The area ratio of the aquaculture water body in the high-position fish pond to the total purified water body in the primary treatment pond, the secondary treatment pond and the tertiary treatment pond is 1:0.1, while the area ratio of the aquaculture water body to the purified water body in the conventional process is 1:10, and compared with the conventional process, the treatment efficiency of the tail water of the invention is improved by 100 times, so that the tail water treatment method is suitable for industrial culture.
The above-described embodiments are merely illustrative of the present invention and are not meant to be limiting, and any obvious modifications thereof which would occur to persons skilled in the art without departing from the spirit and scope of the invention are therefore considered to be within the appended claims.
Claims (7)
1. A fisherman comprehensive internal circulation ecological breeding system is characterized by comprising a high-level fish pond, a primary treatment pond, a secondary treatment pond and a tertiary treatment pond which are arranged in the same breeding room, wherein the breeding room is a greenhouse;
the high-position fish pond adopts high-density fish culture, microbial flora is put in the high-position fish pond, and the utilization rate of feed in the high-position fish pond is improved by utilizing a biological floc technology;
the aquaculture tail water in the high-order fishpond carries out purification treatment through primary treatment pond, secondary treatment pond and tertiary treatment pond to plant crops in primary treatment pond, secondary treatment pond and tertiary treatment pond, concrete processing procedure and planting and breeding mode are as follows:
(1) planting the phyllopodium palustrum in the primary treatment tank by taking the biochar as a matrix, culturing a proper amount of earthworms in the matrix, discharging the culture tail water in the high-position fish pond into the primary treatment tank, and carrying out primary purification treatment on the culture tail water by utilizing the biochar matrix, the phyllopodium palustrum, the earthworms and microbial flora;
(2) discharging the tail water subjected to primary purification treatment to a secondary treatment tank, planting water hyacinth on the water surface of the secondary treatment tank, planting watermifoil in the water body, breeding shellfish at the bottom layer, and performing secondary purification treatment on the tail water by using the water hyacinth, watermifoil, shellfish and microbial flora;
(3) and discharging the tail water subjected to the secondary purification treatment to a tertiary treatment tank, planting azolla, cress or water spinach on the water surface of the tertiary treatment tank, culturing filter-feeding fishes in the water body, culturing shellfish at the bottom layer, performing tertiary purification treatment on the tail water by utilizing the azolla, the cress, the water spinach, the filter-feeding fishes, the shellfish and microbial flora, and pumping the water subjected to the tertiary purification treatment into a high-level fish pond for recycling.
2. The comprehensive internal circulation ecological breeding system for fishermen according to claim 1, wherein the shellfish is a snail, a river snail, an oyster or a scallop.
3. The comprehensive intracorporeal circulation ecological aquaculture system of claim 1, wherein said filter-feeding fish is chub, bighead carp or paddlefish.
4. The comprehensive internal circulation ecological aquaculture system for fishermen according to claim 1, wherein said herbivore, water hyacinth, watermifoil and azolla are harvested and crushed or fermented into silage as feed for fish in said high-level fish pond.
5. The comprehensive internal circulation ecological breeding system for fishermen according to claim 4, wherein the feed used for breeding in the high-level fish pond is silage or protein feed prepared by fermentation of livestock and poultry and animal leftovers and solid thalli.
6. The comprehensive internal circulation ecological culture system for fishermen according to claim 1, wherein the water temperature of the high-level fishpond is controlled to be 14-30 ℃, the pH value is controlled to be 6.5-8.5, and the dissolved oxygen is controlled to be 4-8 mg/L.
7. The comprehensive internal circulation ecological aquaculture system for fishermen according to claim 1, wherein the area ratio of aquaculture water in the high-level fish pond to total purified water in the primary treatment pond, the secondary treatment pond and the tertiary treatment pond is 1: 0.1.
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