CN209403312U - Enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing - Google Patents

Enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing Download PDF

Info

Publication number
CN209403312U
CN209403312U CN201821801341.9U CN201821801341U CN209403312U CN 209403312 U CN209403312 U CN 209403312U CN 201821801341 U CN201821801341 U CN 201821801341U CN 209403312 U CN209403312 U CN 209403312U
Authority
CN
China
Prior art keywords
pipe
filter screen
flow
negative tube
bivalve shellfish
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201821801341.9U
Other languages
Chinese (zh)
Inventor
张涛
于正林
胡志
周骢
王晓龙
杨美洁
宋浩
杨红生
周毅
张立斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Oceanology of CAS
Original Assignee
Institute of Oceanology of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Oceanology of CAS filed Critical Institute of Oceanology of CAS
Priority to CN201821801341.9U priority Critical patent/CN209403312U/en
Application granted granted Critical
Publication of CN209403312U publication Critical patent/CN209403312U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Landscapes

  • Farming Of Fish And Shellfish (AREA)

Abstract

The utility model provides a kind of enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing, including cultivating pipe, negative tube, filter screen, air charging system, outlet pipe, it is described to cultivate the outermost layer that pipe is whole device, the bottom end for cultivating pipe is provided with one layer of filter screen, the upper end side wall for cultivating pipe is provided with apopore, negative tube, which is placed in, to be cultivated in pipe, the bottom end of negative tube is provided with one layer of filter screen, one end of outlet pipe is connected to negative tube, the other end of outlet pipe is placed at the apopore for cultivating pipe, and air charging system is placed on the filter screen in negative tube.Hydroelectric resources is greatly saved using the breeding method of the present apparatus, juvenile mollusk growth rate improves 20%-50% than conventional method, survival rate is up to 90% or more, saves seawater and bait up to 70% or more.

Description

Enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing
Technical field
The utility model relates to arrive aquaculture field, and in particular to a kind of for bivalve shellfish seed intermediate rearing Enclosed gas charging upper up-flow breeding apparatus.
Background technique
China possesses huge marine shellfish aquaculture industry, and shellfish culture is important a member of sea-farming industry, produces The 80% of the China Liang Zhan sea-farming total output.Common the bivalve shellfish such as delicious flavours such as clam, oyster and scallop, nutrition is rich Richness has important economic value.As artificial culture technology continues to develop, efficient industrial seedling rearing mode is by more Attention, shellfish aquaculture become mariculture industry pith.
During bivalve shellfish industrial seedling rearing, the intermediate rearing of juvenile mollusk is a key technology.Studies have shown that shell is long 300-1000 μm of juvenile mollusk is lower than 10% in field cultivating survival rate, and the juvenile mollusk of the long 3mm of shell can be high in field cultivating survival rate Up to 85% or more.Therefore, how to improve juvenile mollusk after metamorphosis to the survival rate and growth rate for growing to the 3mm stage in juvenile mollusk Between cultivate and be of great significance.
The mode that traditional artificial breeding mostly uses greatly bottom of pond to educate without sand culture, juvenile mollusk accumulate in bottom of pond, this cultivation side Formula has the shortcomings that slow growth, the death rate are high, bait utilization is low etc..With the development of technology in recent years, rises streaming system and open Begin the intermediate rearing for being used for juvenile mollusk, flows through juvenile mollusk using vertical water flow from bottom to top, provides to juvenile mollusk endlessly new Fresh seawater and bait substantially increase the survival rate and growth rate of juvenile mollusk, meanwhile, upper up-flow has easy to maintain, effective use The advantages that breeding spaces, long service life and save the cost.Upper up-flow working principle such as Fig. 1 that the prior art uses, passes through The high pressure of high water level enters water in tank, and water flow passes through juvenile mollusk from bottom to top, then directly exhausts, and reaches ascending water with this Stream.Although the method can effectively improve juvenile mollusk survival rate and growth rate, but not recycling after water flow discharge, waste water significantly Resource and food resource improve cultivation cost.
Chinese Patent Application No. CN2017207906095.4 discloses a kind of leech upper up-flow circulating water culture system, packet Include pier and culture zone;Pier include in length and breadth intersect made of bracket, set on frame bottom buoyancy tank and be fixed on The pedal of rack upper surface;Culture zone includes that rhone, plug-flow pump and several box for breeding, box for breeding are arranged on bracket, row Sink is located between box for breeding, it is characterised in that: buoyancy tank is equipped with aeration aperture and gas bleeder valve;Box for breeding includes case side wall and metal Netted bottom;The top of case side wall is equipped with first through hole;Corresponding with first through hole is offered on the side wall of rhone Two through-holes are fixedly connected between first through hole and the second through-hole by outlet pipe;The lower part for draining groove sidewall is equipped with draining Pipe is attached between drainpipe and plug-flow pump by threeway.This utility model is pumped using plug-flow so that external water automatically flows into Into box for breeding, while the oxygen content being arranged in air pump increase water, although circulation that this system solves water flow in box for breeding are asked Topic, makes the water flow moment in box for breeding be in flow regime, increases water oxygen level, but is promoted by plug-flow pump entire The water of system recycles, and power consumption can then greatly increase.
In view of the above-mentioned problems of the prior art, the utility model provides a kind of for training among bivalve shellfish seed The enclosed gas charging upper up-flow breeding apparatus and its breeding method educated are to overcome drawbacks described above.
Utility model content
For the problems of in the prior art, the purpose of the utility model is to provide a kind of saving water resource, reducing Electric energy loss, the enclosed gas charging upper up-flow for bivalve shellfish seed intermediate rearing that juvenile mollusk growth is fast, survival rate is high are cultivated Device, for the juvenile mollusk of intermediate rearing bivalve shellfish, solve existing juvenile mollusk intermediate rearing device waste water resource, power consumption it is high, The low problem of juvenile mollusk survival rate.
To achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing, which is characterized in that packet It includes and cultivates pipe, negative tube, filter screen, air charging system, outlet pipe, it is described to cultivate the outermost layer that pipe is whole device, cultivate pipe Bottom end is provided with one layer of filter screen, and the upper end side wall for cultivating pipe is provided with apopore, and negative tube, which is placed in, to be cultivated in pipe, negative tube Bottom end is provided with one layer of filter screen, and one end of outlet pipe is connected to negative tube, and the other end of outlet pipe is placed in the water outlet for cultivating pipe At hole, air charging system is placed on the filter screen in negative tube.
Further, the negative tube is split type, and top is divided into straight pipe, and lower part is divided into reducer pipe, reducer pipe it is upper End taper end mouth is connected with straight pipe.
Further, the bottom end of negative tube is at a distance from cultivation tube bottom end filter screen in 5-8cm.
Further, the outlet pipe and apopore at least one, and the distribution that is centrosymmetric.
It further, further include floating ball, the floating ball is fixed near water outlet, and is connect by filament with pipe is cultivated, The purpose that floating ball is arranged is that the water surface is made to be located at device water outlet middle position.
Further, the filter screen is bolting silk, and the mesh number of the bolting silk is 40-100 mesh, according to the type of juvenile mollusk and greatly It is small to be selected.
Further, bolting silk is connected by the internal diameter short tube ring pressure type equal with pipe outside diameter is cultivated.
Further, the air charging system is nanometer gas tube.
Further, the material for cultivating pipe is U-PVC.
A kind of breeding method of intermediate rearing bivalve shellfish, specifically includes following steps, and it is suitable to be selected according to juvenile mollusk type Water Inversion phenomenon, pH value and bait etc., cultivation density are ten thousand/device of 20-100, and the bivalve shellfish juvenile mollusk for completing abnormal is placed in On the filter screen for cultivating tube bottom end, device is placed in culture pond, the water surface is made to be located at device water outlet middle position, opens inflation Device inflation controls flow rate of water flow flow by changing aeration quantity according to the type and size of juvenile mollusk.
Further, the bivalve shellfish includes quahog, Clam Mactra chinensis, clam, Ruditapes philippinarum, clam, oyster, sea Gulf scallop, Chlamys farreri, Patinopecten yessoensis etc..
On the basis of meeting general knowledge known in this field, above-mentioned each optimum condition can any combination, both the utility model Embodiment.
The beneficial effects of the utility model are:
(1) a kind of enclosed gas charging upper up-flow for bivalve shellfish seed intermediate rearing provided by the utility model is cultivated Device, including pipe, negative tube, filter screen, air charging system, outlet pipe are cultivated, it is described to cultivate the outermost layer that pipe is whole device, training The bottom end for educating pipe is provided with one layer of filter screen, and the upper end side wall for cultivating pipe is provided with apopore, and negative tube, which is placed in, to be cultivated in pipe, bears The bottom end of pressure pipe is provided with one layer of filter screen, and one end of outlet pipe is connected to negative tube, and the other end of outlet pipe is placed in cultivation pipe Apopore at, air charging system is placed on the filter screen in negative tube.The utility model is cultivating shape in pipe using air charging system At negative pressure, enter water flow from lower end water inlet, flowed out from water outlet, to form upper up-flow, the entire streaming system that rises can be with It is recycled in culture pond, does not need plug-flow pump and water is pushed to outflow from bottom to top, also do not need for water to be discharged, but can be direct Form water circulation in culture pond to utilize, while also recycle bait, be greatly saved water resource and food resource, juvenile mollusk at Motility rate is up to 90% or more, and the speed of growth improves 20%-50% or more than conventional method, save seawater and bait 70% with On.
(2) negative tube of the utility model is split type, and top is divided into straight pipe, and lower part is divided into reducer pipe, reducer pipe Upper end taper end mouth is connected with straight pipe, and by specifically implementing, it is found that the upper up-flow effect for such setting is formed is more preferable.
(3) it is close can to greatly improve juvenile mollusk culture up to ten thousand/device of 20-100 for the juvenile mollusk culture density of the utility model Degree is cultivated high-efficient.
(4) outlet pipe of the utility model breeding apparatus at least one and it is symmetrical, ascending current can be made uniform By juvenile mollusk, water flow avoids juvenile mollusk from leading to death rate height because water flow is uneven under high density without dead angle.
(5) breeding apparatus of the utility model further includes floating ball, and the floating ball is fixed near water outlet, and passes through filament It is connect with pipe is cultivated, the purpose that floating ball is arranged is that the water surface is made to be located at device water outlet middle position.
(6) air charging system of the utility model breeding apparatus is nanometer gas tube, replaces traditional fill with nanometer gas tube Gas stone not only effectively improves the dissolved oxygen in water body, more increases the negative pressure cultivated in pipe, is effectively promoted and rises flowing water circulation effect Rate, day circulating water flow increase to 10-15 cubic metres.
(7) material used by the utility model is U-PVC and organic glass, and material non-toxic is harmless, device is easy to disassemble, It is easy to operate, durable, seedling cost is effectively reduced.
(8) the utility model is built-in inflation, external culture, it is possible to the growing state of juvenile mollusk directly from upper end And bait is ingested situation etc., and technical staff is facilitated to implement the condition of culture of control and adjustment juvenile mollusk.
Detailed description of the invention
Fig. 1 is the upper up-flow schematic diagram that the prior art uses;
Fig. 2 is a kind of enclosed gas charging upper up-flow breeding apparatus described in the utility model embodiment 1;
Fig. 3 is a kind of enclosed gas charging upper up-flow breeding apparatus described in the utility model embodiment 2;
Wherein, 1- tank, 2- culturing jar, 3- filter screen, 4- juvenile mollusk, 5- water inlet, 6- water outlet, 7- cultivate pipe, 8- Negative tube, 9- filter screen, 10- air charging system, 11- outlet pipe, 12- apopore, 13- straight pipe, 14- reducer pipe, 15- bolting silk, 16- nanometers of gas tubes, 17- floating ball.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
Embodiment 1
A kind of enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing as shown in Figure 2, packet It includes and cultivates pipe, negative tube, filter screen, air charging system, outlet pipe, it is described to cultivate the outermost layer that pipe is whole device, cultivate pipe Bottom end is provided with one layer of filter screen, and the upper end side wall for cultivating pipe is provided with apopore, and negative tube, which is placed in, to be cultivated in pipe, negative tube Bottom end is provided with one layer of filter screen, and one end of outlet pipe is connected to negative tube, and the other end of outlet pipe is placed in the water outlet for cultivating pipe At hole, air charging system is placed on the filter screen in negative tube.
Embodiment 2
A kind of enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing as shown in Figure 3, packet Include cultivate pipe, negative tube, bolting silk, nanometer gas tube, outlet pipe, floating ball, the negative tube be it is split type, top is divided into straight-through Pipe, lower part are divided into reducer pipe, and the upper end taper end mouth of reducer pipe is connected with straight pipe, and the pipe of cultivating is the outermost of whole device Layer, the bottom end for cultivating pipe are provided with one layer of bolting silk, and the upper end side wall for cultivating pipe is provided with apopore, and negative tube is placed in cultivation pipe In, the bottom end of negative tube is provided with one layer of bolting silk, and one end of outlet pipe is connected to negative tube, and the other end of outlet pipe is placed in cultivation At the apopore of pipe, nanometer gas tube is placed on the filter screen in negative tube, and the outlet pipe and apopore are 4, and are in Central symmetry distribution, floating ball are fixed near water outlet, and are connect by filament with pipe is cultivated.
Embodiment 3
Bivalve shellfish selected by the present embodiment is quahog juvenile mollusk, and average shell is 900 μm long, experiment condition are as follows: water temperature 23- 27 DEG C, salinity 30-33 ‰, pH value 7.6-7.8, Micro Algae bait is chrysophyceae and chlorella, and cultivation density is 500,000/device, It will complete abnormal bivalve shellfish juvenile mollusk to be placed on the filter screen for cultivating tube bottom end, device be placed in culture pond, water surface position is made In device water outlet middle position, the inflation of nanometer gas tube is opened.
Breeding apparatus used in the present embodiment is same as Example 2, design parameter are as follows: cultivates pipe diameter 300mm, negative pressure The diameter of the top straight pipe of pipe is identical as the diameter of outlet pipe, and outer diameter is 32mm, and bolting silk mesh number is 80 mesh.
Culture effect during quahog intermediate rearing is shown in Table 1.
Table 1 cultivates the culture effect of quahog juvenile mollusk under pipe height and the thick port diameter in reducer pipe lower end
Although can be seen that cultivating pipe height and the thick port diameter in reducer pipe lower end will affect by the culture effect in table 1 Juvenile mollusk survival rate, but generally reached 85% or more, water resource 70% is saved, bait 70%, speed of growth ratio are saved Conventional method improves 20-50% or more, this culture apparatus, which has, in summary improves juvenile mollusk survival rate, saves seawater and bait Beneficial effect.
Embodiment 4
Part same as Example 3 repeats no more, the difference is that bivalve shellfish selected by the present embodiment is that oyster is young Shellfish, average shell are 900 μm long.
Culture effect during oyster juvenile mollusk intermediate rearing is shown in Table 2.
Table 2 cultivates the culture effect of oyster juvenile mollusk under pipe height and the thick port diameter in reducer pipe lower end
Although can be seen that cultivating pipe height and the thick port diameter in reducer pipe lower end will affect by the culture effect in table 2 Juvenile mollusk survival rate, but generally reached 88% or more, water resource 70% is saved, bait 70%, speed of growth ratio are saved Conventional method improves 20-50% or more, this culture apparatus, which has, in summary improves juvenile mollusk survival rate, saves seawater and bait Beneficial effect.
Embodiment 5
Part same as Example 3 repeats no more, the difference is that bivalve shellfish selected by the present embodiment is the smooth fan of shrimp Shellfish juvenile mollusk, average shell are 2000 μm long.
Culture effect during Patinopecten yessoensis juvenile mollusk intermediate rearing is shown in Table 3.
Table 3 cultivates the culture effect of Patinopecten yessoensis juvenile mollusk under pipe height and the thick port diameter in reducer pipe lower end
Although can be seen that cultivating pipe height and the thick port diameter in reducer pipe lower end will affect by the culture effect in table 3 Juvenile mollusk survival rate, but generally reached 85% or more, water resource 70% is saved, bait 70%, speed of growth ratio are saved Conventional method improves 20-50% or more, this culture apparatus, which has, in summary improves juvenile mollusk survival rate, saves seawater and bait Beneficial effect.
It is emphasized that embodiment described in the utility model be it is illustrative, without being restrictive, therefore this reality It is all practical new according to this by those skilled in the art with novel including being not limited to embodiment described in specific embodiment The other embodiments that the technical solution of type obtains also belong to the range of the utility model protection.

Claims (7)

1. a kind of enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing, which is characterized in that including Pipe, negative tube, filter screen, air charging system, outlet pipe are cultivated, it is described to cultivate the outermost layer that pipe is whole device, cultivate the bottom of pipe End is provided with one layer of filter screen, and the upper end side wall for cultivating pipe is provided with apopore, and negative tube, which is placed in, to be cultivated in pipe, the bottom of negative tube End is provided with one layer of filter screen, and one end of outlet pipe is connected to negative tube, and the other end of outlet pipe is placed in the apopore for cultivating pipe Place, air charging system are placed on the filter screen in negative tube.
2. a kind of enclosed gas charging upper up-flow for bivalve shellfish seed intermediate rearing according to claim 1 cultivates dress Set, which is characterized in that the negative tube be it is split type, top is divided into straight pipe, and lower part is divided into reducer pipe, and the upper end of reducer pipe is thin Port is connected with straight pipe.
3. a kind of enclosed gas charging upper up-flow for bivalve shellfish seed intermediate rearing according to claim 1 cultivates dress It sets, which is characterized in that the bottom end of negative tube is at a distance from cultivation tube bottom end filter screen in 5-8cm.
4. a kind of enclosed gas charging upper up-flow for bivalve shellfish seed intermediate rearing according to claim 1 cultivates dress Set, which is characterized in that the outlet pipe and apopore at least one, and the distribution that is centrosymmetric.
5. a kind of enclosed gas charging upper up-flow for bivalve shellfish seed intermediate rearing according to claim 1 cultivates dress It sets, which is characterized in that further include floating ball, the floating ball is fixed near water outlet, is connect by filament with pipe is cultivated.
6. a kind of enclosed gas charging upper up-flow for bivalve shellfish seed intermediate rearing according to claim 1 cultivates dress It sets, which is characterized in that the filter screen is bolting silk, and the mesh number of the bolting silk is selected according to the type and size of juvenile mollusk.
7. a kind of enclosed gas charging upper up-flow for bivalve shellfish seed intermediate rearing according to claim 1 cultivates dress It sets, which is characterized in that the air charging system is nanometer gas tube.
CN201821801341.9U 2018-11-02 2018-11-02 Enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing Active CN209403312U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821801341.9U CN209403312U (en) 2018-11-02 2018-11-02 Enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821801341.9U CN209403312U (en) 2018-11-02 2018-11-02 Enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing

Publications (1)

Publication Number Publication Date
CN209403312U true CN209403312U (en) 2019-09-20

Family

ID=67933270

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821801341.9U Active CN209403312U (en) 2018-11-02 2018-11-02 Enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing

Country Status (1)

Country Link
CN (1) CN209403312U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109169442A (en) * 2018-11-02 2019-01-11 中国科学院海洋研究所 A kind of enclosed gas charging upper up-flow breeding apparatus and its breeding method for bivalve shellfish seed intermediate rearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109169442A (en) * 2018-11-02 2019-01-11 中国科学院海洋研究所 A kind of enclosed gas charging upper up-flow breeding apparatus and its breeding method for bivalve shellfish seed intermediate rearing
CN109169442B (en) * 2018-11-02 2023-09-08 中国科学院海洋研究所 Closed inflatable upflow cultivation device and cultivation method for intermediate cultivation of bivalve fries

Similar Documents

Publication Publication Date Title
CN101485298B (en) Cultivation system suitable for animal in cultivation pond and cultivation method thereof
CN108477028A (en) A kind of Australia dragon design spot fry factory culturing method
CN106719270A (en) A kind of aquaculture life-support system and its application method
CN106359198B (en) A kind of boat-carrying cultivation cabin
CN105766756B (en) A kind of Apostichopus japonicus in Ponds feeding system and feeding method
CN109349189A (en) A kind of shellfish of wave driving feeds cultivation apparatus and cultural method automatically
CN103766269B (en) Double-circulation cultivation system for early baby clam of purple-black wing clam
CN209403312U (en) Enclosed gas charging upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing
CN205266634U (en) Ecological breeding device
CN204305872U (en) A kind of pond bottom equipment for increasing oxygen content of water
CN209403311U (en) Opening inflatable upper up-flow breeding apparatus for bivalve shellfish seed intermediate rearing
CN105494219A (en) Aquaculture pond with vortex sewage discharge performance
CN203675867U (en) Aquatic animal culture system
CN109169442A (en) A kind of enclosed gas charging upper up-flow breeding apparatus and its breeding method for bivalve shellfish seed intermediate rearing
CN205389987U (en) Hepu pearl oyster betta is a seed selection seed rearing system
CN204362750U (en) A kind of mandarin fish family selective breeding isolation hatching system
CN204682170U (en) A kind of Macrobrachium rosenbergii hatching, cultivating pond
CN207811380U (en) A kind of artificial swamp resource recovery utilizes system
CN203709049U (en) Dual-circulation acquaculture system for early baby clams of potamilus alatus
CN206089146U (en) Dirty system of breed aquatics pond bottom water bubble oxygenation formula collection
CN109329040A (en) A kind of ammonia nitrogen bioconversion method of litopenaeus vannamei industrial aquaculture
CN109169441A (en) A kind of opening inflatable upper up-flow breeding apparatus and its breeding method for bivalve shellfish seed intermediate rearing
CN210580538U (en) Australia freshwater lobster circulating water breeding system
CN208300723U (en) A kind of industrial circulating water fry rearing system
CN206507062U (en) A kind of winter grass shrimp constricta zoology cyclic culture device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant