CN111387116A - Treatment and utilization method and device for reservoir hydro-fluctuation belt - Google Patents
Treatment and utilization method and device for reservoir hydro-fluctuation belt Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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; AVICULTURE; APICULTURE; PISCICULTURE; 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
- A01K61/51—Culture of aquatic animals of shellfish of gastropods, e.g. abalones or turban snails
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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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- 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
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention discloses a method and a device for governing and utilizing a hydro-fluctuation belt of a reservoir, which comprise a silver carp and bighead carp sediment collecting device and a snail seed breeding device: the outer side of the bottom of the silver carp and bighead carp fry intermediate cultivation net cage is provided with a layer of dense net, the outer side of the dense net is provided with a conical sewage collecting hopper, and a suction device capable of sucking sediments is arranged in the tail end of the sewage collecting hopper. The spiral shell seedling cultivating net cage of the spiral shell seedling cultivating device is characterized in that a sediment stuffing box is arranged at the bottom of the net cage, stuffing is laid in the stuffing box, and a suction device is communicated with the sediment stuffing box through a pipeline, so that sucked sediment is directly flushed into the stuffing. According to the method, the sediments at the bottom of the silver carp and bighead carp fry intermediate cultivation net cage are sucked away, so that the sediments are prevented from being decomposed by microorganisms and returning to the water body again in the form of nutritive salt, and the effect of purifying the water body is achieved; the sucked sediment provides bait for the spiral shell, solves the problem of bait supply for artificial breeding of the spiral shell, and saves the breeding cost.
Description
Technical Field
The invention relates to a method and a device for treating and utilizing a reservoir hydro-fluctuation belt, belonging to the technical field of fishery treatment.
Background
The water purification fishery is an effective method for protecting and recovering the water quality of a reservoir, which is developed in recent years, along with effective treatment of industrial pollution, the nutrient load of most reservoir areas mainly comes from agricultural and living non-point source pollution, the water quality of the reservoir areas mainly depends on nitrogen and phosphorus nutrient salts, if the eutrophication of water bodies reaches a certain degree, a large amount of algae can be propagated under proper conditions to form water bloom, and sometimes serious peculiar smell is accompanied to influence drinking water sources and harm human health.
The principle of the water purification fishery is that a biological control method is adopted, namely, phytoplankton biomass is controlled by properly stocking water purification organisms (silver carps, bighead carps and the like), the water nutrition degree of a water body is reduced, the water quality of a reservoir is improved, the ecological balance is guaranteed, and the purposes of 'controlling water by fishery and purifying water by fishery' are achieved. Silver carps and bighead carps are used as a part of an ecosystem food net and are fed by algae, zooplankton, organic debris and the like. On one hand, the influence of silver carps and bighead carps on nitrogen and phosphorus in water bodies is that when the silver carps and bighead carps are harvested, a part of nitrogen and phosphorus are taken away from a system in the form of fish body protein, and account for about 3.01 percent and 5.28 percent of the total nitrogen. More importantly, plankton is converted into downward deposition of feces (algal containing mass, etc.) by the filter feeding effect, which is much greater than the direct removal of the fish catch. However, the sediment such as feces formed by silver carps, bighead carps and the like can be decomposed by microorganisms in the water body and then returns to the water body in the form of nutritive salt, so that how to collect and effectively utilize the sediment by an economical and feasible means and accelerate the removal effect of nitrogen and phosphorus is one of the problems which are urgently needed to be solved in the development of water purification fishery.
The spiral shell (the collective name of river snail, stone snail etc.) is the emerging paddy field of Guangxi breeds, mainly provides raw materials product for Guangxi characteristic industry spiral shell powder, and one of the main bottlenecks of current industry development is the batch supply of spiral shell artificial offspring seed, and traditional integrated mode of breeding is put in kind spiral shell in the paddy field and carries out natural propagation, and the reproduction time is long, and the survival rate is low, and the offspring seed quality does not have the guarantee, and breed density is unclear, and the technique is difficult to standardize. And the problem of bait supply is difficult to solve by artificial seedling breeding. The early-stage snail seed has the characteristics of filter feeding and scraping, mainly depends on ingestion of benthic diatoms and fine humus in natural water, and has higher cost and technical requirements in the processes of biological bait cultivation and concentration in the artificial breeding process, thereby restricting the industrial development of the snail seed; the method is characterized in that the method comprises the steps of collecting and utilizing sediments in a pond area, and reasonably breeding the snails in the pond area to treat and utilize the sediments.
Disclosure of Invention
The invention aims to solve the technical problem that the prior art has the defects, and provides a method and a device for treating and utilizing a reservoir hydro-fluctuation belt, wherein a large amount of sediments such as excrement and the like are generated in a water area for culturing silver carps and bighead carps in a reservoir, and the sediments are decomposed by microorganisms in the water body and then return to the water body in the form of nutritive salt to form the hydro-fluctuation belt of the reservoir; according to the invention, the spiral shells are reasonably cultivated in the reservoir area, so that not only are sediments treated and water bodies purified, but also baits are provided for the spiral shells; not only reduces the economic investment, but also enlarges the economic income, and achieves multiple purposes.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention firstly provides a method for treating and utilizing a reservoir hydro-fluctuation belt, which comprises the following steps:
(1) the silver carp and bighead carp sediment collecting device is arranged: a layer of dense net is arranged on the outer side of the bottom of the silver carp and bighead carp fry intermediate cultivation net cage, and a cone-shaped sewage collecting hopper is arranged on the outer side of the dense net; the upper bottom of the sewage collecting hopper is round or oval, is connected with the bottom of the silver carp and bighead carp fry intermediate culture net cage through a connecting piece, the tail end of the sewage collecting hopper is conical, and a suction device capable of sucking sediments is arranged inside the sewage collecting hopper;
(2) set up spiral shell seed breeding device: manufacturing a rectangular net cage frame by using 12 frame supports, and sewing a netting around the net cage frame, wherein the netting is not sewn at the upper bottom and the lower bottom of the net cage frame; the method comprises the following steps that a waterproof material is made into a cuboid box body without an upper bottom to serve as a sediment stuffing box, the area of the upper bottom of the box body is equal to that of the lower bottom of a net cage frame, and the box body and the lower bottom of the net cage frame are tightly connected into a whole; a layer of filler is laid at the bottom of the sediment filler box, and then floaters are uniformly arranged at the upper parts of the periphery of the net cage frame, so that the upper edge of the sediment filler box exceeds the water surface; the suction device is communicated with the sediment stuffing box through a pipeline, so that the sucked sediment can be directly flushed into the stuffing;
(3) utilization of the deposit: sowing the snail seeds into the filling materials in the sediment filling box, then starting the suction device, sucking out the sediment by using the suction device and directly flushing the sediment into the filling materials in the sediment filling box; the snail seedlings have the characteristics of filter feeding and scrape feeding, and eat benthic diatoms and fine humus in sediments to proliferate.
In the technical scheme, in the step (1), as no feed is fed during the intermediate cultivation of silver carps and bighead carps in water purification fishery, the bottom area of the net cage is large, and the bottom area is preferably 10m × long and 10m wide.
In the technical scheme, in the step (1), the dense net is made of polyethylene materials, the area of the dense net is the same as that of the bottom of the intermediate culture net cage for silver carp and bighead carp fries, and the mesh is 1 mm.
In the technical scheme, in the step (1), the overall height of the sewage collecting hopper is 1-1.5m, and the diameter of the upper bottom of the sewage collecting hopper is 3-5 m.
In the above technical solution, in the step (1), the suction device uses electric power to provide suction power; the suction device is powered by a solar storage battery.
In the above technical scheme, in the step (2), the material of the net cage frame is pvc material or bamboo material; the length and width of the water-proof board are not more than 8 meters, and the height of the water-proof board is not more than 0.5 meter, so that deformation under the action of water flow is prevented.
In the above technical scheme, in the step (2), the netting is made of polyethylene material, and the mesh is 1 mm.
In the above technical scheme, in the step (2), the sediment stuffing box is preferably made of an aluminum-plastic plate or tarpaulin, and the height of the sediment stuffing box is 15 cm.
In the above technical scheme, in the step (2), the filler is calcium carbonate particles and/or plant fibers, and the thickness is 3 cm.
In the above technical scheme, in the step (3), the suction device is provided with an automatic switch device, the automatic switch is turned on every 8 hours, and the time for sucking the sediments every time is 30 minutes.
In the above technical scheme, in the step (3), the inoculation density of the snail seeds is 400-2Preferably 800-2。
The invention also provides a device for governing and utilizing the hydro-fluctuation belt of the reservoir, which comprises a silver carp and bighead carp sediment collecting device and a snail seed breeding device, and is characterized in that:
the silver carp and bighead carp sediment collecting device is characterized in that a layer of dense net is arranged on the outer side of the bottom of a silver carp and bighead carp fry intermediate cultivation net cage, and a cone-shaped sewage collecting hopper is arranged on the outer side of the dense net; the upper bottom of the sewage collecting hopper is circular or oval and is connected with the bottom of the silver carp and bighead carp fry intermediate culture net cage through a connecting piece; the tail end is conical, and a suction device capable of sucking sediments is arranged in the tail end;
spiral shell seed breeding device, the main part is spiral shell seed breeding box with a net, the bottom of spiral shell seed breeding box with a net is provided with the deposit box of packing: the snail fry cultivating net cage comprises a rectangular net cage frame and a netting sewn around the net cage frame, wherein floaters are uniformly arranged at the upper part of the periphery of the net cage frame; the sediment stuffing box is a cuboid box body without an upper bottom, the area of the upper bottom of the box body is equal to the area of the lower bottom of the net cage frame, and the upper bottom and the lower bottom are tightly connected into a whole;
the sediment packing box is internally paved with packing, and the suction device is communicated with the sediment packing box through a pipeline, so that the sucked sediment is directly flushed into the packing.
In the technical scheme, the bottom area of the intermediate cultivating net cage for the silver carp and bighead carp fries is preferably 10m × long and 10m wide.
In the technical scheme, the dense net is made of polyethylene materials, the area of the dense net is the same as that of the bottom of the silver carp and bighead carp fry intermediate cultivation net cage, and the mesh is 1 mm.
In the technical scheme, the overall height of the sewage collecting hopper is 1-1.5m, and the diameter of the upper bottom of the sewage collecting hopper is 3-5 m.
In the technical scheme, the suction device provides suction power by using electric power; the suction device is powered by a solar storage battery.
In the technical scheme, the suction device is provided with an automatic switch device, the automatic switch is started every 8 hours, and the time for sucking the sediments every time is 30 minutes.
In the technical scheme, the net cage frame is made of pvc material or bamboo material; the length and width are not more than 8 m, and the height is not more than 0.5 m.
In the technical scheme, the netting is made of polyethylene materials, and the meshes are 1 mm.
In the technical scheme, the sediment stuffing box is made of a waterproof material, and is preferably an aluminum-plastic plate or tarpaulin; the height of the sediment stuffing box was 15 cm.
In the technical scheme, the filler is calcium carbonate particles and/or plant fibers, and the thickness of the filler is 3 cm.
The technical advantages of the invention are as follows: the sediment at the bottom of the silver carp and bighead carp fry intermediate cultivation net cage is sucked away, so that the sediment is prevented from being decomposed by microorganisms and returning to the water body again in the form of nutritive salt, and the water body purification effect is achieved; the sucked sediment provides bait for the spiral shell, solves the problem of bait supply for artificial breeding of the spiral shell, and saves the breeding cost.
Drawings
FIG. 1 is a schematic view of the overall structure of the treatment and utilization device for the hydro-fluctuation belt of the reservoir of the present invention;
wherein: 1 is a silver carp and bighead carp fry intermediate cultivation net cage, 2 is a dense net, 3 is a sewage collecting bucket, 4 is a suction device, 5 is a snail fry cultivation net cage, and 6 is a sediment stuffing box.
Detailed Description
The following detailed description of the embodiments of the present invention is provided, but the present invention is not limited to the following descriptions:
the invention firstly provides a treatment and utilization device for a water-level fluctuation belt of a reservoir, which comprises a silver carp and bighead carp sediment collecting device and a snail seed breeding device, as shown in figure 1:
the silver carp and bighead carp sediment collecting device is characterized in that a layer of dense net 2 is arranged on the outer side of the bottom of a silver carp and bighead carp fry intermediate cultivation net cage 1, and a cone-shaped sewage collecting hopper 3 is arranged on the outer side of the dense net; the upper bottom of the sewage collecting hopper 3 is circular or elliptical and is connected with the bottom of the silver carp and bighead carp fry intermediate culture net cage through a connecting piece; the tail end is conical, and a suction device 4 capable of sucking sediments is arranged in the tail end;
spiral shell seed breeding device, the main part is spiral shell seed breeding box with a net 5, the bottom of spiral shell seed breeding box with a net is provided with deposit stuffing box 6: the snail fry cultivating net cage comprises a rectangular net cage frame and a netting sewn around the net cage frame, wherein floaters are uniformly arranged at the upper part of the periphery of the net cage frame; the sediment stuffing box is a cuboid box body without an upper bottom, the area of the upper bottom of the box body is equal to the area of the lower bottom of the net cage frame, and the upper bottom and the lower bottom are tightly connected into a whole;
the sediment packing box is internally paved with packing, and the suction device is communicated with the sediment packing box through a pipeline, so that the sucked sediment is directly flushed into the packing.
In the invention, the bottom area of the intermediate culture net cage for the silver carp and bighead carp fries is preferably 10m × long and 10m wide.
In the invention, the dense net is made of polyethylene material, the area of the dense net is the same as that of the bottom of the silver carp and bighead carp fry intermediate cultivation net cage, and the mesh is 1 mm.
In the invention, the overall height of the sewage collecting hopper is 1-1.5m, and the diameter of the upper bottom of the sewage collecting hopper is 3-5 m.
In the invention, the suction device uses electric power to provide suction power; the suction device is powered by a solar storage battery.
In the invention, the suction device is provided with an automatic switch device, the automatic switch is started once every 8 hours, and the time for sucking the sediments every time is 30 minutes.
In the invention, the net cage frame is made of pvc material or bamboo material; the length and width are not more than 8 m, and the height is not more than 0.5 m.
In the invention, the netting is made of polyethylene material, and the mesh is 1 mm.
In the invention, the sediment stuffing box is made of a waterproof material, preferably an aluminum-plastic plate or tarpaulin; the height of the sediment stuffing box was 15 cm.
In the invention, the filler is calcium carbonate particles and/or plant fibers, and the thickness of the filler is 3 cm.
The invention also provides a treatment and utilization method of the reservoir hydro-fluctuation belt, which comprises the following steps:
(1) the silver carp and bighead carp sediment collecting device is arranged: a layer of dense net 2 is arranged on the outer side of the bottom of the silver carp and bighead carp fry intermediate rearing net cage 1, and a cone-shaped sewage collecting hopper 3 is arranged on the outer side of the dense net; the upper bottom of the sewage collecting hopper is round or oval, is connected with the bottom of the silver carp and bighead carp fry intermediate culture net cage through a connecting piece, the tail end of the sewage collecting hopper is conical, and a suction device 4 capable of sucking sediments is arranged inside the sewage collecting hopper;
(2) set up spiral shell seed breeding device: manufacturing a rectangular net cage frame by using 12 frame supports, and sewing a netting around the net cage frame, wherein the netting is not sewn at the upper bottom and the lower bottom of the net cage frame; the method comprises the following steps that a waterproof material is made into a cuboid box body without an upper bottom to serve as a sediment stuffing box, the area of the upper bottom of the box body is equal to that of the lower bottom of a net cage frame, and the box body and the lower bottom of the net cage frame are tightly connected into a whole; a layer of filler is laid at the bottom of the sediment filler box, and then floaters are uniformly arranged at the upper parts of the periphery of the net cage frame, so that the upper edge of the sediment filler box exceeds the water surface; the suction device is communicated with the sediment stuffing box through a pipeline, so that the sucked sediment can be directly flushed into the stuffing;
(3) utilization of the deposit: the snail seeds are sowed in the stuffing of the sediment stuffing box (the inoculation density is 800-2) Then, starting the suction device, sucking out the sediment by using the suction device and directly punching the sediment into the filler of the sediment filler box; the snail seedlings have the characteristics of filter feeding and scrape feeding, and eat benthic diatoms and fine humus in sediments to proliferate.
The invention is illustrated below with reference to specific examples:
example 1:
the utility model provides a treatment and utilization device in reservoir hydro-fluctuation belt, includes silver carp, bighead carp deposit collection device and spiral shell seed breeding device:
the silver carp and bighead carp sediment collecting device is characterized in that a layer of dense net 2 is arranged on the outer side of the bottom of a silver carp and bighead carp fry intermediate cultivation net cage 1, a cone-shaped sewage collecting hopper 3 is arranged on the outer side of the dense net, the upper bottom of the sewage collecting hopper 3 is circular or oval and is connected with the bottom of the silver carp and bighead carp fry intermediate cultivation net cage through a connecting piece, the tail end of the sewage collecting hopper is conical, an absorbing device 4 capable of absorbing sediments is arranged in the sewage collecting hopper, the bottom area of the silver carp and bighead carp fry intermediate cultivation net cage is 10m long × wide by 10m, the dense net is made of polyethylene materials, the area of the dense net is equal to the area of the bottom of the silver carp and bighead carp fry intermediate cultivation net cage, meshes are 1mm, the overall height of the sewage collecting hopper is 1.1m, the diameter of the upper bottom of the sewage collecting hopper is 4m, the absorbing device provides absorbing power by using electric power, and the solar storage battery provides electric power for the silver carp and an automatic switch device is arranged on the sewage collecting device;
spiral shell seed breeding device, the main part is spiral shell seed breeding box with a net 5, the bottom of spiral shell seed breeding box with a net is provided with deposit stuffing box 6: the snail fry cultivating net cage comprises a rectangular net cage frame and a netting sewn around the net cage frame, wherein floaters are uniformly arranged at the upper part of the periphery of the net cage frame; the sediment stuffing box is a cuboid box body without an upper bottom, the area of the upper bottom of the box body is equal to the area of the lower bottom of the net cage frame, and the upper bottom and the lower bottom are tightly connected into a whole; the net cage frame is made of pvc material, the area of the lower bottom is 20 square meters (the length is 5 meters, the width is 4 meters), and the height is 0.3 meter; the netting is made of polyethylene material, and the mesh is 1 mm; the sediment stuffing box is made of an aluminum-plastic plate and has the height of 15 cm;
the sediment stuffing box is internally paved with stuffing (calcium carbonate particles with the thickness of 3cm), and the suction device is communicated with the sediment stuffing box through a pipeline, so that the sucked sediment is directly flushed into the stuffing.
Example 2:
the utility model provides a treatment and utilization device in reservoir hydro-fluctuation belt, includes silver carp, bighead carp deposit collection device and spiral shell seed breeding device:
the silver carp and bighead carp sediment collecting device is characterized in that a layer of dense net 2 is arranged on the outer side of the bottom of a silver carp and bighead carp fry intermediate cultivation net cage 1, a cone-shaped sewage collecting hopper 3 is arranged on the outer side of the dense net, the upper bottom of the sewage collecting hopper 3 is circular or oval and is connected with the bottom of the silver carp and bighead carp fry intermediate cultivation net cage through a connecting piece, the tail end of the sewage collecting hopper is conical, and an absorbing device 4 capable of absorbing sediments is arranged in the sewage collecting hopper, the bottom area of the silver carp and bighead carp fry intermediate cultivation net cage is 10m long × wide 10m, the dense net is made of polyethylene materials, the area of the dense net is equal to the area of the bottom of the silver carp and bighead carp fry intermediate cultivation net cage, meshes are 1mm, the overall height of the sewage collecting hopper is 1.3m, the diameter of the upper bottom of the sewage collecting hopper is 3.5m, the absorbing power is provided by electric power, the solar storage battery provides electric power, and an automatic switching device is arranged on the dense net, and is opened once every 8 hours;
spiral shell seed breeding device, the main part is spiral shell seed breeding box with a net 5, the bottom of spiral shell seed breeding box with a net is provided with deposit stuffing box 6: the snail fry cultivating net cage comprises a rectangular net cage frame and a netting sewn around the net cage frame, wherein floaters are uniformly arranged at the upper part of the periphery of the net cage frame; the sediment stuffing box is a cuboid box body without an upper bottom, the area of the upper bottom of the box body is equal to the area of the lower bottom of the net cage frame, and the upper bottom and the lower bottom are tightly connected into a whole; the net cage frame is made of bamboo and wood, the area of the lower bottom is 20 square meters (the length is 5 meters, the width is 4 meters), and the height is 0.3 meter; the netting is made of polyethylene material, and the mesh is 1 mm; the sediment stuffing box is made of tarpaulin and has the height of 15 cm;
the sediment stuffing box is internally paved with stuffing (calcium carbonate particles with the thickness of 3cm), and the suction device is communicated with the sediment stuffing box through a pipeline, so that the sucked sediment is directly flushed into the stuffing.
Example 3:
the apparatus of example 1 was used for remediation: in 2019, 2 sets of devices are arranged for use in the flood and tidal river reservoir of Hepu county, North sea city; throwing the snail seedlings in 5 days in 4 months, throwing young snails with the average weight of about 1 g in 400/square meter, and reaching the average weight of more than 3 g in about 13 days to meet the requirement of throwing in the rice field.
Example 4:
the apparatus of example 2 was used for remediation: in 2019, 2 sets of devices are arranged for use in the flood and tidal river reservoir of Hepu county, North sea city; throwing the snail seedlings in 5 days in 4 months, throwing young snails with the average weight of about 1 g in 800 pieces/square meter, and reaching the average weight of more than 3 g in about 15 days to meet the requirement of throwing in the rice field.
Example 5:
in 2019, 4 sets of devices are arranged, wherein 2 sets of devices are the devices in the embodiment 1, and 2 sets of devices are the devices in the embodiment 2 when the device is used in a flood and river reservoir in Hepu county in North sea; throwing the snail seedlings in the 10 th 9 th month, throwing young snails with the average weight of about 1 g in 1000/square meter and the young snails with the average weight of about 3 g in 15 scales, and meeting the requirement of throwing the young snails into the rice field.
The above examples are only for illustrating the technical concept and features of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A treatment and utilization method of a reservoir hydro-fluctuation belt is characterized by comprising the following steps:
(1) the silver carp and bighead carp sediment collecting device is arranged: a layer of dense net (2) is arranged on the outer side of the bottom of the silver carp and bighead carp fry intermediate rearing net cage (1), and a cone-shaped sewage collecting hopper (3) is arranged on the outer side of the dense net; the upper bottom of the sewage collecting hopper is round or oval, is connected with the bottom of the silver carp and bighead carp fry intermediate culture net cage through a connecting piece, the tail end of the sewage collecting hopper is conical, and a suction device (4) capable of sucking sediments is arranged inside the sewage collecting hopper;
(2) set up spiral shell seed breeding device: manufacturing a rectangular net cage frame by using 12 frame supports, and sewing a netting around the net cage frame, wherein the netting is not sewn at the upper bottom and the lower bottom of the net cage frame; the method comprises the following steps that a waterproof material is made into a cuboid box body without an upper bottom to serve as a sediment stuffing box, the area of the upper bottom of the box body is equal to that of the lower bottom of a net cage frame, and the box body and the lower bottom of the net cage frame are tightly connected into a whole; a layer of filler is laid at the bottom of the sediment filler box, and then floaters are uniformly arranged at the upper parts of the periphery of the net cage frame, so that the upper edge of the sediment filler box exceeds the water surface; the suction device is communicated with the sediment stuffing box through a pipeline, so that the sucked sediment can be directly flushed into the stuffing;
(3) utilization of the deposit: sowing the snail seeds into the filling materials in the sediment filling box, then starting the suction device, sucking out the sediment by using the suction device and directly flushing the sediment into the filling materials in the sediment filling box; the snail seedlings have the characteristics of filter feeding and scrape feeding, and eat benthic diatoms and fine humus in sediments to proliferate.
2. The method as claimed in claim 1, wherein in the step (1), the area of the bottom of the silver carp and bighead carp fry intermediate cultivation net cage is 10m × in length and 10m in width, the area of the dense net is the same as the area of the bottom of the silver carp and bighead carp fry intermediate cultivation net cage, the dense net is made of polyethylene materials, and the meshes are 1 mm.
3. The method of claim 1, wherein: in the step (1), the overall height of the sewage collecting hopper is 1-1.5m, and the diameter of the upper bottom of the sewage collecting hopper is 3-5 m.
4. The method of claim 1, wherein: in the step (1), the suction device provides suction power by using electric power; the suction device is powered by a solar storage battery.
5. The method of claim 1, wherein: in the step (2), the net cage frame is made of pvc material or bamboo material; the length and width are not more than 8 m, and the height is not more than 0.5 m.
6. The method of claim 1, wherein: in the step (2), the netting is made of polyethylene material, and the mesh is 1 mm.
7. The method of claim 1, wherein: in the step (2), the sediment stuffing box is made of an aluminum-plastic plate or tarpaulin, and the height of the sediment stuffing box is 15 cm; the filler is calcium carbonate particles and/or plant fibers, and the thickness of the filler is 3 cm.
8. The method of claim 1, wherein: in the step (3), the suction device is provided with an automatic switch device, the automatic switch is started every 8 hours, and the time for sucking the sediments every time is 30 minutes.
9. The method of claim 1, wherein: in the step (3), the inoculation density of the snail seedlings is 400-2。
10. The utility model provides a treatment and utilization device in reservoir hydro-fluctuation belt, includes silver carp, bighead carp deposit collection device and spiral shell seed breeding device which characterized in that:
the silver carp and bighead carp sediment collecting device is characterized in that a layer of dense net (2) is arranged on the outer side of the bottom of a silver carp and bighead carp fry intermediate rearing net cage (1), and a cone-shaped sewage collecting hopper (3) is arranged on the outer side of the dense net; the upper bottom of the sewage collecting hopper (3) is circular or elliptical and is connected with the bottom of the silver carp and bighead carp fry intermediate cultivation net cage through a connecting piece; the tail end is conical, and a suction device (4) capable of sucking sediments is arranged in the tail end;
the main body of the spiral shell seedling cultivating device is a spiral shell seedling cultivating net cage (5), and the bottom of the spiral shell seedling cultivating net cage is provided with a sediment stuffing box (6): the snail fry cultivating net cage comprises a rectangular net cage frame and a netting sewn around the net cage frame, wherein floaters are uniformly arranged at the upper part of the periphery of the net cage frame; the sediment stuffing box is a cuboid box body without an upper bottom, the area of the upper bottom of the box body is equal to the area of the lower bottom of the net cage frame, and the upper bottom and the lower bottom are tightly connected into a whole;
the sediment packing box is internally paved with packing, and the suction device is communicated with the sediment packing box through a pipeline, so that the sucked sediment is directly flushed into the packing.
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