CN105284692A - Factory-like large-scale seed culture device and method for marsupenaeus japonicus - Google Patents
Factory-like large-scale seed culture device and method for marsupenaeus japonicus Download PDFInfo
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- CN105284692A CN105284692A CN201510907834.5A CN201510907834A CN105284692A CN 105284692 A CN105284692 A CN 105284692A CN 201510907834 A CN201510907834 A CN 201510907834A CN 105284692 A CN105284692 A CN 105284692A
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Abstract
The invention relates to a factory-like large-scale seed culture device and method for marsupenaeus japonicus, and belongs to the technical field of prawn farming. The method includes the following processing steps that 1, a culture pond is constructed; 2, sanding is conducted; 3, a gas-lift unit is installed; 4, disinfecting is carried out; 5, inflow is performed; 6, seeds are put in; 7, the water color is adjusted; 8, bait is thrown; 9, the water quality and growth conditions are monitored; 10, the seeds are moved out of the pond. According to the method, factory-like high-density and large-scale (about 3 cm) seed culture can be conducted, the culture period in the culture pond is shortened, and the large-scale seed culture device and method for the marsupenaeus japonicus which is cultured for multiple batches in one year are realized. By the adoption of the method, the body length of the seeds is cultured to be about 3 cm from 0.8 cm, and the survival rate of the marsupenaeus japonicus can reach 80%; the marsupenaeus japonicus is cultured into commercial sized marsupenaeus japonicus from the body length of about 3 cm, the survival rate of the marsupenaeus japonicus can reach 70%, and the yield can reach 1500-2250 kg/hm2.
Description
Technical field
The present invention relates to the extensive seed rearing device of a kind of Marsupenaeus japonicus batch production and breeding method thereof, belong to prawn culturing technical field.
Background technology
Prawn is deeply by the aquatic food that people like, and the feed coefficient of the kind such as Environment of Litopenaeus vannamei Low, Penaeus monodon, the increase of batch production high-density breeding water body both at home and abroad is in recent years very fast, technology becomes better and approaching perfection day by day, and amounts to per unit area yield and reaches 7.5kg/m
2above.Marsupenaeus japonicus is as the improved seeds to shrimps, and the dry fortune of Yin Qinai, the shrimp that can live is sold, and body colour decorative pattern is bright-coloured, and it is good to eat something rare mouthfeel, and be subject to the favor in market especially, price is 3 ~ 5 times of other kind prawn price always.Marsupenaeus japonicus is distributed in the Bohai and Yellow Seas of China and western part bank in the Korea peninsula; In China's Coastal Areas, all there is cultivation in north and south.Because Marsupenaeus japonicus has the habit of latent sand, what the current breeding way overwhelming majority was taked is outdoor earth pond cultivation.This kind of breeding way is taked at outdoor 0.3 ~ 1.5hm2 Tu Chi, selects sandy soil or paving about 5cm medium sand, throw in the seed of long about the 0.8cm of body, the technical measures such as artitificial food or biological feed of throwing something and feeding at the bottom of pond.Throw in after seed, because of now individual little and latent sand, prophase management difficulty is very large, and weed survival rate only about 30%, later stage quantity is difficult to assurance, causes general output lower than (750kg/hm2) below and unstable.
Summary of the invention
The invention reside in the weak point solving and exist in prior art, there is provided one can carry out batch production, high density, large gauge (about 3cm) seed rearing, shorten the cultivation phase in growing pond, realize Marsupenaeus japonicus large size seedling seed device and the breeding method of stubble cultivation more than a year.Adopt the method to cultivate autologous for seed long 0.8cm to long about the 3cm of body, Marsupenaeus japonicus survival rate can reach more than 80%; Autologous long about 3cm cultivates to commercial sized prawn, and survival rate can reach more than 70%, and output can reach 1500 ~ 2250kg/hm2.
The extensive seed rearing device of a kind of Marsupenaeus japonicus batch production, its special character is to comprise the multiple cultivation ponds 12 be located in raising chamber, the cross section of cultivating pond 12 is round, cultivate pond 12 and be provided with temperature control, supply water, feeder, be hung with multiple for inflating in cultivation pond 12 on the inwall in cultivation pond 12, the airlift unit 11 that Chi Shui rotates to same direction can be ordered about simultaneously, cultivate bottom discharge mouth place, pond 12 and soil stack 1 is installed, soil stack 1 is laid with osculum 2 on the part body cultivating the end, pond 12, the bottom of soil stack 1 is provided with blowoff line 3, one end of blowoff line 3 is inserted in collection seedling groove 4,
The discharge outlet place in described cultivation pond 12 is erected with cylindrical barricade 9, and form circular dirt colleceting area in cylindrical barricade 9, outside dirt colleceting area, the medium sand 13 cleaned is laid in all the other regions;
Described airlift unit 11 comprises and the contour and outer tube 5 connected up and down in cultivation pond 12, inflated hose 6 is inserted with in outer tube 5, one end that inflated hose 6 is positioned at outer tube 5 outside is connected with fan blower, one end that inflated hose 6 is positioned at outer tube 5 is connected with Bubbled stone 7, and outer tube 5 is provided with guide water outlet 8;
The diameter of described soil stack 1 is 110cm, soil stack 1 from bottom to 50cm place, every cm
2drill diameter 0.3cm osculum 2 one, described collection seedling groove 4 is of a size of: long 100cm × wide 80cm × high 60cm, collects seedling groove 4 upper limb lower than blowoff valve 105cm, with blowdown, controlling water level, collection seed;
Described cultivation pond 12 is similar to infundibulate at the bottom of pond, cultivates outer rim at the bottom of pond, pond 12 and reduces to 4 ~ 6% to discharge outlet direction ratio.
The extensive offspring seed cultivation method of a kind of Marsupenaeus japonicus batch production, its special character is to comprise the following steps:
1, cultivation pond is built
In raising chamber, built-in circle cultivates pond 12, the roof shading rate of raising chamber is more than 80%, indoor illumination intensity remains on 500 ~ 1000lx, cultivate draining in the middle of at the bottom of pond, at the discharge outlet place cultivating pond 12, soil stack 1 is installed, soil stack 1 is laid with osculum 2 on the part body cultivating the end, pond 12, and the bottom of soil stack 1 is provided with blowoff line 3, and one end of blowoff line 3 is inserted in collection seedling groove 4;
Described cultivation pond 12 is circular, diameter 5m, the dark 1.4m in pond, available depth 1.1 ~ 1.2m, cultivates pond 12 end outer rim and reduces to 4 ~ 6% to discharge outlet direction ratio;
The diameter of described soil stack 1 is 110cm, soil stack 1 from bottom to 50cm place, every cm
2drill diameter 0.3cm osculum 2 one, blowoff line 3 is connected with the blowoff valve 10 outside pond, outside pond, blowoff valve 10 opposite position builds the collection seedling groove 4 of long 100cm × wide 80cm × high 60cm in advance, collects seedling groove 4 upper limb lower than blowoff valve 105cm, with blowdown, controlling water level, collection seed;
2, sanding
Build cylindrical barricade 9 around discharge outlet, in cylindrical barricade 9, form diameter is the dirt colleceting area of 50cm, and outside dirt colleceting area, the medium sand 13 cleaned is laid in all the other regions;
Described cylindrical barricade 9 adopts to lay bricks and assembles, and the width of cylindrical barricade is 6 ~ 8cm, wall height is 6 ~ 8cm;
The laying depth of described medium sand 13 is 4 ~ 5cm, and the particle diameter of medium sand 13 is 0.5 ~ 1.5mm;
3, airlift unit 11 is installed
Around cultivation pond 12 inwall, multiple airlift unit 11 is installed, simultaneously every m at the bottom of pond
2lay a gas exhausting stone, ensure that cultivating pond 12 total aeration quantity per minute is 2 ~ 3% of effective water body;
Described airlift unit 11 comprises and the contour and outer tube 5 connected up and down in cultivation pond 12, inflated hose 6 is inserted with in outer tube 5, one end that inflated hose 6 is positioned at outer tube 5 outside is connected with fan blower, one end that inflated hose 6 is positioned at outer tube 5 is connected with Bubbled stone 7, outer tube 5 is provided with guide water outlet 8, delivery port 8 installation site of all airlift units 11 is identical, be all tangential direction with pool wall, to ensure to form rotating vortex in cultivation pond 12, make the accumulation of impurities such as residual bait, ight soil in dirt colleceting area;
4, sterilize
After cultivating pond 12 sanding, to cultivation pond 12 disinfection;
Described concrete steps of disinfecting are: water inlet 15 ~ 30cm in cultivation pond 12, add chlorine-containing disinfectant, make available chlorine in water reach 6ppm, after mixing, with the pool inner water containing disinfectant each for pond portion repeatedly to be sprayed and after soaking 24 hours, then rinse well with clean sea water;
5, intake
Be delivered to after filtering with 200 mesh sieve tulles cultivate pond 12 by through sand filtration, sterilization fresh seawater after precipitating 24 hours, after water inlet, ocean temperature is adjusted to 26 ~ 28 DEG C, salinity 20 ~ 32 ‰, abundant aeration more than 24 hours is stand-by;
6, seedling is put
Buy the healthy seedling of long more than the 0.8cm of body, breeding density controls at 8000 ~ 12000 tails/m
2, before seed enters pond, in seedling bag, slowly add new water in pond, seed adapted to after 1 ~ 1.5 hour, more complete for seed pond is evenly let go;
7, water transfer look
After making to dwell at the bottom of seed, do not affect by light, have stable environment, when putting seedling, the water colour cultivated in pond 12 being adjusted to light reddish brown color, making transparency reach 50 ~ 70% of the depth of water, later every day according to water colour adjustment, supplement;
During described water transfer look, red prawn slice bait 5 ~ 8ppm can be added in water, carry out water colour adjustment;
8, bait feeding
After putting seedling second day starts bait of throwing something and feeding, 3 ~ 5 bait of throwing something and feeding up to next morning 6 time every day 18;
Described Marsupenaeus japonicus bait feeding: after putting seedling second day starts bait of throwing something and feeding, within first 15 days, throw something and feed shrimp seedling special bait prawn slice and freezing adult ' Luchung ' insect, throw something and feed after 15 days sub-mixed bait of Marsupenaeus japonicus private particle and freezing adult ' Luchung ' insect; Throw something and feed in finished product bait and adult ' Luchung ' insect two kinds of bait intervals; Bait prawn slice and the sub-mixed bait particle diameter of Marsupenaeus japonicus private particle and feeding volume are according to the description of product and adjust at any time with situation of ingesting with reference to prawn body is long, with adult ' Luchung ' insect substitute throw something and feed part prawn slice or mixed bait time, feeding volume can according to halogen worm: mixed bait (prawn slice)=2.5:1 converts;
9, water quality monitoring and growing state monitoring
When every day 6 ~ 18, at interval of 4 ~ 6 hours, outside cultivation pond 12, open blowoff valve 10, discharge the 1/30-1/20 of Chi Shui, the residual bait piled up, ight soil, crust are discharged outside pond, after blowdown, supplement new water in the middle of cultivation pond; In pond, added beneficial bacterium once every 2 ~ 4 days, make beneficial bacterium addition in the water of pond reach 10
4cFU/ml, within every 2 ~ 4 days, water sampling detects water quality index 1 time;
When every afternoon 17, close airlift unit 11, reduce pond water circulation speed, when next morning 6, open airlift unit 11;
Every 4 ~ 6 days, get shrimp detected activity, growing state evening, the long growth of body in every 5 days should reach 4 ~ 6mm, if when not reaching, should check that whether water quality, bait feeding be suitable;
10, pond is gone out
After shrimp seedling body reaches 3cm, pond to be gone out in time and be put in outdoor growing pond, in order to avoid affect late growing stage because density is excessive or cause size differentiation;
Described go out pond time, should 18 time after shrimp out movable time, pull out and cultivate the middle soil stack 1 in pond 12, open the blowoff valve 10 cultivated outside pond 12, with 20 order net cages collection shrimp seedling in collection seedling groove 4.
The extensive seed rearing device of Marsupenaeus japonicus batch production of the present invention and breeding method thereof, build in indoor and cultivate pond 12, and at cultivation pond 12 end sanding, carry out batch production, high density, large gauge (about 3cm) seed rearing, cultivating survival rate can reach more than 80%; Large size seedling seed is supplied to plant, aquaculture management sport technique segment is more easily held, from about 3cm to commercial sized prawn cultivation survival rate can reach more than 70%, output can reach 1500 ~ 2250kg/hm2; And use this technology can shorten the cultivation phase in growing pond, realize stubble cultivation more than a year.
Accompanying drawing explanation
Fig. 1: the structural representation of the extensive seed rearing device of Marsupenaeus japonicus batch production of the present invention;
Fig. 2: the structural representation of airlift unit of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, in the every other embodiment not having to obtain under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
The extensive seed rearing device of Marsupenaeus japonicus batch production of the present embodiment, with reference to accompanying drawing 1-2, comprise the multiple cultivation ponds 12 be located in raising chamber, the cross section of cultivating pond 12 is round, cultivate pond 12 and be provided with temperature control, supply water, feeder, be hung with multiple for the airlift unit 11 of pond water rotational flow also can be ordered about to cultivating inflation in pond 12 on the inwall in cultivation pond 12, cultivate bottom discharge mouth place, pond 12 and soil stack 1 is installed, soil stack 1 is laid with osculum 2 on the part body cultivating the end, pond 12, the bottom of soil stack 1 is provided with blowoff line 3, one end of blowoff line 3 is inserted in collection seedling groove 4, the discharge outlet place cultivating pond 12 is erected with cylindrical barricade 9, forms circular dirt colleceting area in barricade 9, airlift unit 11 comprises and the contour and outer tube 5 connected up and down in cultivation pond 12, inflated hose 6 is inserted with in outer tube 5, one end that inflated hose 6 is positioned at outer tube 5 outside is connected with fan blower, and one end that inflated hose 6 is positioned at outer tube 5 is connected with Bubbled stone 7, and outer tube 5 is provided with delivery port 8, cultivate at the bottom of pond, pond 12 and reduce to 4 ~ 6% to discharge outlet direction ratio.
Embodiment 2
The extensive offspring seed cultivation method of the present embodiment Marsupenaeus japonicus batch production, comprises following incubation step:
1, raising chamber, pond are arranged
Raising chamber area 600 ~ 1000m
2if, fiberglass or plastic foil roof, roof shading rate reaches more than 80%, indoor maintenance 500 ~ 1000lx intensity of illumination;
Pond 12 is cultivated in indoor construction, and cultivation pond 12 is rounded, diameter 5m, the dark 1.4m in pond, available depth 1.1 ~ 1.2m; Cultivate draining in the middle of pond, reduce to 4 ~ 6% to discharge outlet direction ratio at the bottom of pond, discharge outlet arranges the pvc soil stack 1 of Φ 110cm; Soil stack 1 from bottom to 50cm place, every cm
2bore Φ 0.3cm osculum 2 one; Soil stack 1 is connected with the blowoff valve 10 outside pond by blowoff line 3 pre-buried at the bottom of pond, outside pond, blowoff valve 10 opposite position builds the collection seedling groove 4 of long 100cm × wide 80cm × high 60cm in advance, collection seedling groove 4 upper limb is lower than blowoff valve 105cm, with blowdown, controlling water level, collection seed, each pond is equipped with water inlet, inflation, temperature raising device;
2, sanding
Around the circular dirt colleceting area of discharge outlet with brick diameter 50cm, outside dirt colleceting area, enclose the cylindrical barricade 9 of wide 6 ~ 8cm, high 6 ~ 8cm, all the other regions paving 4 ~ 5cm thick medium sand 13(particle diameter 0.5 ~ 1.5mm outside dirt colleceting area at the bottom of pond), before sanding, sand is thoroughly cleaned up;
3, inflation and airlift unit 11 are arranged
Around cultivation pond 12 inwall, multiple airlift unit 11 is installed, simultaneously every m at the bottom of pond
2lay a gas exhausting stone, ensure that cultivating pond 12 total aeration quantity per minute is 2 ~ 3% of effective water body;
4, sterilize
After the sanding of pond, 15 ~ 30cm of intaking, adds chlorine-containing disinfectant, makes available chlorine in water reach 6ppm, after mixing, with repeatedly being sprayed in each for pond portion containing the pool inner water of disinfectant and soaking disinfection 24 hours, and then rinses well with clean sea water;
5, intake, put seedling
By through sand filtration, sterilization fresh seawater after precipitating 24 hours is filtered into pond with 200 mesh sieve tulles, after water inlet, adjustment temperature is 26 ~ 28 DEG C, salinity 20 ~ 32 ‰, and abundant aeration more than 24 hours is stand-by;
Buy body long more than 0.8cm seed, require seed size evenly, body without hanging even thickness before and after dirty, enteron aisle, liver pancreas clear-cut, healthy seedling that energy is strong, body long 0.8cm seed breeding density can 10,000 tails/m
2left and right.After seed is marched into the arena, in seedling bag, slowly add new water in pond, after making seed adapt to 1 hour, more complete for seed pond is evenly let go;
6, water transfer look
When putting seedling, in water, add red prawn slice bait 5 ~ 8ppm, make water colour present micro-bronzing, or add unicellular alga, make transparency reach 50 ~ 70% of the depth of water, later every day suitably adjusts according to water colour, supplement;
7, bait feeding
After putting seedling second day starts bait of throwing something and feeding, 3 ~ 5 bait of throwing something and feeding up to next morning 6 time every day 18;
Described Marsupenaeus japonicus bait feeding: after putting seedling second day starts bait of throwing something and feeding, within first 15 days, throw something and feed shrimp seedling special bait prawn slice and freezing adult ' Luchung ' insect, throw something and feed after 15 days sub-mixed bait of Marsupenaeus japonicus private particle and freezing adult ' Luchung ' insect; Throw something and feed in finished product bait and adult ' Luchung ' insect two kinds of bait intervals; Bait prawn slice and the sub-mixed bait particle diameter of Marsupenaeus japonicus private particle and feeding volume are according to the description of product and adjust at any time with situation of ingesting with reference to prawn body is long, with adult ' Luchung ' insect substitute throw something and feed part mixed bait time, feeding volume can according to halogen worm: mixed bait=2.5:1 converts;
8, daily management comprises water quality management and growing state detection
Water quality requirement meets fishery water standard; When every day 6 ~ 18, at interval of 4 ~ 6 hours, outside pond, open water discharging valve, the residual bait piled up, ight soil, crust to be discharged outside pond and exchange 1/30 ~ 1/20 Chi Shui in the middle of pond.In pond, added the beneficial bacteriums such as bacillus subtilis, nitrifying bacteria, photosynthetic bacteria once every 2 ~ 4 days, make often kind of beneficial bacterium addition in the water of pond reach 10
4cFU/ml.Within every 2 days, water sampling detects water quality index 1 time;
When every afternoon 17 (before bait throwing in 0.5 ~ 1 hour), close airlift unit 11, reduce pond water circulation speed; Airlift unit 11 is opened when next morning 6;
Growing state detects, and requires, every 5 days, to get shrimp detected activity, growing state evening.
9, pond is gone out
After shrimp seedling body reaches 3cm, pond to be gone out in time and be put in outdoor growing pond, in order to avoid affect late growing stage because density is excessive or cause size differentiation.When going out pond, can in 18 time after shrimp out movable time, pull out soil stack, the sewage draining valve opened outside pond in the middle of pond, collect shrimp seedling with 20 order net cages collecting in seedling groove.
Within 2014, adopt this technology in Laizhou, Shandong city, former indoor fish pond is reconstructed into 600m
2the extensive seed rearing device of Marsupenaeus japonicus batch production, in outdoor water temperature far below the March 20 that can put seedling minimum temperature (12 DEG C), buys body long 0.8cm Marsupenaeus japonicus seed 6,300,000 tail (56 yuan/ten thousand tails amount to 3.53 ten thousand yuan) from Behavioral Change; Adopt this breeding method, open boiler and water temperature is adjusted to 26 DEG C, the special bait of Marsupenaeus japonicus of throwing something and feeding (first 15 days red woods prawn slice, rear 15 overhead traveling crane unit board mixed baits) and freezing adult ' Luchung ' insect.Cultivated through 29 days, average body reaches 3cm.Large size seedling seed 520.6 ten thousand tail was gone out altogether, selling price 230 yuan/ten thousand tail, the output value 11.97 ten thousand yuan to April 25; Bait, artificial, energy cost amount to 2.78 ten thousand yuan, profit 5.66 ten thousand yuan.
On May 4th, 2014, buy body long 0.8cm Marsupenaeus japonicus seed 680,000 tail (unit price 43 yuan/ten thousand tail amounts to 2.92 ten thousand yuan) from Sanya, Hainan Province, carry out second batch cultivation.When second batch is cultivated, because the large halogen worm of adult goes on the market in a large number, low price, so corresponding minimizing mixed bait consumption, strengthen adult ' Luchung ' insect consumption, other breeding methods are with first.To June 10, go out pond average body long 4.2cm large size seedling seed 5,620,000 tail altogether, selling price 180 yuan/ten thousand tail, the output value 10.12 ten thousand yuan; Bait, artificial, energy cost amount to 1.85 ten thousand yuan, profit 5.35 ten thousand yuan.
The extensive seed rearing device of Marsupenaeus japonicus batch production of the present invention and breeding method thereof, build in indoor and cultivate pond 12, and at cultivation pond 12 end sanding, carry out batch production, high density, large gauge (about 3cm) seed rearing, cultivating survival rate can reach more than 80%; Large size seedling seed is supplied to plant, aquaculture management sport technique segment is more easily held, from about 3cm to commercial sized prawn cultivation survival rate can reach more than 70%, output can reach 1500 ~ 2250kg/hm2.And use this technology can shorten the cultivation phase in growing pond, realize stubble cultivation more than a year.
Claims (10)
1. the extensive seed rearing device of Marsupenaeus japonicus batch production, it is characterized in that comprising the multiple cultivation ponds (12) be located in raising chamber, the cross section of cultivating pond (12) is round, cultivate pond (12) and be provided with temperature control, supply water, feeder, be hung with multiple for inflating in cultivation pond (12) on the inwall of cultivation pond (12), the airlift unit (11) that Chi Shui rotates to same direction can be ordered about simultaneously, cultivate pond (12) bottom discharge mouth place and soil stack (1) is installed, soil stack (1) is laid with osculum (2) on the part body cultivating (12) end, pond, the bottom of soil stack (1) is provided with blowoff line (3), one end of blowoff line (3) is inserted in collection seedling groove (4).
2. according to the extensive seed rearing device of a kind of Marsupenaeus japonicus batch production according to claim 1, it is characterized in that the discharge outlet place of described cultivation pond (12) is erected with cylindrical barricade (9), circular dirt colleceting area is formed in cylindrical barricade (9), outside dirt colleceting area, the medium sand (13) cleaned is laid in all the other regions, cultivates at the bottom of pond (12) pond and reduces to 4-6% to discharge outlet direction ratio.
3. according to the extensive seed rearing device of a kind of Marsupenaeus japonicus batch production according to claim 1, it is characterized in that described airlift unit (11) comprises and cultivation pond (12) the contour and outer tube (5) connected up and down, inflated hose (6) is inserted with in outer tube (5), one end that inflated hose (6) is positioned at outer tube (5) outside is connected with fan blower, one end that inflated hose (6) is positioned at outer tube (5) is connected with Bubbled stone (7), and outer tube (5) is provided with guide water outlet (8).
4., according to the extensive seed rearing device of a kind of Marsupenaeus japonicus batch production according to claim 1, it is characterized in that the diameter of described soil stack (1) is 110cm, soil stack (1) from bottom to 50cm place, every cm
2drill diameter 0.3cm osculum (2) one, described collection seedling groove (4) is of a size of: long 100cm × wide 80cm × high 60cm, collects seedling groove (4) upper limb lower than blowoff valve 105cm, with blowdown, controlling water level, collection seed.
5. the extensive offspring seed cultivation method of Marsupenaeus japonicus batch production, is characterized in that comprising the following steps:
1) cultivation pond, is built
In raising chamber, built-in circle cultivates pond (12), the roof shading rate of raising chamber is more than 80%, indoor illumination intensity remains on 500 ~ 1000lx, cultivate draining in the middle of at the bottom of pond, at the discharge outlet place cultivating pond (12), soil stack (1) is installed, soil stack (1) is laid with osculum (2) on the part body cultivating (12) end, pond, and the bottom of soil stack (1) is provided with blowoff line (3), and one end of blowoff line (3) is inserted in collection seedling groove (4);
2), sanding
Build cylindrical barricade (9) around discharge outlet, in cylindrical barricade (9), form diameter is the dirt colleceting area of 50cm, and outside dirt colleceting area, the medium sand (13) cleaned is laid in all the other regions;
3), airlift unit 11 is installed
Around cultivation pond (12) inwall, multiple airlift unit (11) is installed, simultaneously every m at the bottom of pond
2lay a gas exhausting stone, ensure that cultivating pond (12) total aeration quantity per minute is 2 ~ 3% of effective water body;
4), sterilize
After cultivating pond (12) sanding, to cultivation pond (12) disinfection;
5), intake
Be delivered to after filtering with 200 mesh sieve tulles cultivate pond (12) by through sand filtration, sterilization fresh seawater after precipitating 24 hours, after water inlet, ocean temperature is adjusted to 26 ~ 28 DEG C, salinity 20 ~ 32 ‰, abundant aeration more than 24 hours is stand-by;
6), seedling is put
Buy the healthy seedling of long more than the 0.8cm of body, breeding density controls at 8000 ~ 12000 tails/m
2, before seed enters pond, in seedling bag, slowly add new water in pond, seed adapted to after 1 ~ 1.5 hour, more complete for seed pond is evenly let go;
7), water transfer look
After making to dwell at the bottom of seed, do not affect by light, have stable environment, when putting seedling, the water colour cultivated in pond (12) being adjusted to light reddish brown color, making transparency reach 50 ~ 70% of the depth of water, later every day according to water colour adjustment, supplement;
8), bait feeding
After putting seedling second day starts Marsupenaeus japonicus bait of throwing something and feeding, and bait of throwing something and feeding up to next morning 6 time every day 18, throws something and feeds 3 ~ 5 every day;
9), water quality monitoring and growing state monitoring
When every day 6 ~ 18, at interval of 4 ~ 6 hours, blowoff valve 10 is opened outside cultivation pond 12, discharge the 1/30-1/20 of Chi Shui, the residual bait piled up in the middle of cultivation pond, ight soil, crust are discharged outside pond, supplement new water after blowdown, in pond, added beneficial bacterium once every 2 ~ 4 days, make often kind of beneficial bacterium addition in the water of pond reach 10
4cFU/ml, within every 2 ~ 4 days, water sampling detects water quality index 1 time;
10), pond is gone out
After shrimp seedling body reaches 3cm, pond to be gone out in time and be put in outdoor growing pond, in order to avoid affect late growing stage because density is excessive or cause size differentiation;
Described go out pond time, should 18 time after shrimp out movable time, pull out and cultivate soil stack (1) in the middle of pond (12), open and cultivate pond (12) blowoff valve outward (10), with 20 order net cages collection shrimp seedling in collection seedling groove (4).
6., according to the extensive offspring seed cultivation method of a kind of Marsupenaeus japonicus batch production according to claim 5, it is characterized in that:
Cultivate pond (12) described in step 1) for circular, diameter 5m, the dark 1.4m in pond, available depth 1.1 ~ 1.2m, cultivate (12) end, pond and reduce to 4 ~ 6% to discharge outlet direction ratio; The diameter of described soil stack (1) is 110cm, soil stack (1) from bottom to 50cm place, every cm
2drill diameter 0.3cm osculum (2) one, blowoff line (3) is connected with the blowoff valve (10) outside pond, outside pond, blowoff valve (10) opposite position builds the collection seedling groove (4) of long 100cm × wide 80cm × high 60cm in advance, collect seedling groove (4) upper limb lower than blowoff valve 105cm, with blowdown, controlling water level, collection seed;
Step 2) described in cylindrical barricade (9) adopt and lay bricks and assemble, the width of cylindrical barricade is 6 ~ 8cm, wall height is 6 ~ 8cm, and in barricade, settling zone diameter is 50cm;
The laying depth of described medium sand (13) is 4 ~ 5cm, and the particle diameter of medium sand (13) is 0.5 ~ 1.5mm;
Described airlift unit (11) comprises and cultivation pond (12) the contour and outer tube (5) connected up and down, inflated hose (6) is inserted with in outer tube (5), one end that inflated hose (6) is positioned at outer tube (5) outside is connected with fan blower, one end that inflated hose (6) is positioned at outer tube (5) is connected with Bubbled stone (7), outer tube (5) is provided with guide water outlet (8), delivery port (8) installation site of all airlift units (11) is identical, be all tangential direction with pool wall, to ensure to form rotating vortex in cultivation pond (12), make residual bait, the accumulation of impurities such as ight soil are in dirt colleceting area.
7., according to the extensive offspring seed cultivation method of a kind of Marsupenaeus japonicus batch production according to claim 5, it is characterized in that:
The concrete steps of disinfecting described in step 4) are: water inlet 15 ~ 30cm in cultivation pond (12), add chlorine-containing disinfectant, make available chlorine in water reach 6ppm, after mixing, with the pool inner water containing disinfectant each for pond portion repeatedly to be sprayed and after soaking 24 hours, then rinse well with clean sea water.
8., according to the extensive offspring seed cultivation method of a kind of Marsupenaeus japonicus batch production according to claim 5, it is characterized in that:
During the look of water transfer described in step 7), red prawn slice bait 5 ~ 8ppm can be added in water, carry out water colour adjustment.
9., according to the extensive offspring seed cultivation method of a kind of Marsupenaeus japonicus batch production according to claim 5, it is characterized in that:
The bait of Marsupenaeus japonicus described in step 8) is: after putting seedling second day starts bait of throwing something and feeding, 3 ~ 5 bait of throwing something and feeding up to next morning 6 time every day 18;
Described Marsupenaeus japonicus bait feeding: after putting seedling second day starts bait of throwing something and feeding, within first 15 days, throw something and feed shrimp seedling special bait prawn slice and freezing adult ' Luchung ' insect, throw something and feed after 15 days sub-mixed bait of Marsupenaeus japonicus private particle and freezing adult ' Luchung ' insect; Throw something and feed in finished product bait and adult ' Luchung ' insect two kinds of bait intervals; With adult ' Luchung ' insect substitute throw something and feed part mixed bait time, feeding volume can according to halogen worm: mixed bait=2.5:1 converts.
10., according to the extensive offspring seed cultivation method of a kind of Marsupenaeus japonicus batch production according to claim 5, it is characterized in that:
When step 9) water quality monitoring and growing state monitoring, when every afternoon 17, close airlift unit (11), reduce pond water circulation speed, when next morning 6, open airlift unit 11; Every 4 ~ 6 days, get shrimp detected activity, growing state evening, the long growth of body in every 5 days should reach 4 ~ 6mm.
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