CN107361001B - The cultural method of Portunus trituberculatus Miers two crops in one year - Google Patents
The cultural method of Portunus trituberculatus Miers two crops in one year Download PDFInfo
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- CN107361001B CN107361001B CN201710753401.8A CN201710753401A CN107361001B CN 107361001 B CN107361001 B CN 107361001B CN 201710753401 A CN201710753401 A CN 201710753401A CN 107361001 B CN107361001 B CN 107361001B
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- 241001533364 Portunus trituberculatus Species 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009395 breeding Methods 0.000 claims abstract description 10
- 230000001488 breeding effect Effects 0.000 claims abstract description 10
- 238000009360 aquaculture Methods 0.000 claims abstract description 8
- 244000144974 aquaculture Species 0.000 claims abstract description 8
- 239000006071 cream Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000005516 engineering process Methods 0.000 claims description 11
- 241000238557 Decapoda Species 0.000 claims description 6
- 238000003306 harvesting Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 208000004141 microcephaly Diseases 0.000 claims description 4
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 3
- 230000002776 aggregation Effects 0.000 claims description 3
- 238000004220 aggregation Methods 0.000 claims description 3
- 239000007844 bleaching agent Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 208000000260 Warts Diseases 0.000 claims 1
- 201000010153 skin papilloma Diseases 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000012365 batch cultivation Methods 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- CPKVUHPKYQGHMW-UHFFFAOYSA-N 1-ethenylpyrrolidin-2-one;molecular iodine Chemical compound II.C=CN1CCCC1=O CPKVUHPKYQGHMW-UHFFFAOYSA-N 0.000 description 1
- 244000070406 Malus silvestris Species 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 229920000153 Povidone-iodine Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011456 concrete brick Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004459 forage Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000009342 intercropping Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229960001621 povidone-iodine Drugs 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Classifications
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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
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses the cultural methods of Portunus trituberculatus Miers two crops in one year, its aquaculture model is: ovigerous crab is put into nursery garden by the end of April by first batch, cultivate large size seedling seed, to being just transferred to culture zone to August by the end of July, emasculation is stayed female, the finished product cream crab for cultivating 250-350 grams/, lists in month next year 1-2;Second batch ovigerous crab is put into nursery garden at the beginning of the August by second batch, cultivate large size seedling seed, nursery garden is kept the temperature after November, young crab is helped to pass the winter, culture zone, male and female mixed breeding are transferred to mid-April next year, 150-200 grams/of finished product Fresh crab is arrived in cultivation, it is caught since June and stays greatly small, continued to by the end of July.Cultural method of the invention has filled up the supply blank in May to Portunus trituberculatus Miers between August, has met consumer demand;The utilization rate in pond is improved simultaneously, and cultivating pool of the same area can obtain higher economic benefit.
Description
Technical field
The present invention relates to technical field of aquaculture, and in particular to the cultural method of Portunus trituberculatus Miers two crops in one year.
Background technique
Portunus trituberculatus Miers is one of Chinese Fishery cultivation important species, and delicious meat is full of nutrition, and economic value is high,
It is famous at home and abroad.Recently as the breakthrough of artificial breeding technology, pond-culture industry development is swift and violent, and the whole nation is supported within 2014
Area is grown up to 500,000 mu, 11.9 ten thousand tons of yield.Currently, there are mainly two types of the cultural methods of Portunus trituberculatus Miers: one is by the end of April
To nursery at the beginning of 5 months, former pool cultivation, (the 1-3 month) fishing listing around the Spring Festival;Another kind is to buy crab to period at the beginning of 6 months at the end of May
Seedling, cultivation to (the 1-3 month) around the Spring Festival list.
Above-mentioned cultural method be 1 year one batch, selling time is concentrated and of short duration, it is therefore desirable to pass through the wild shuttle of fishing
Sub- crab fills up the demand in market.But the reinforcement year by year with country to fishery conservation dynamics, closed fishing season can increasingly be grown.
2017, the fishing off season of Portunus trituberculatus Miers was May 1 to August 1st, cannot catch wild swimming crab during this period.Therefore 5
Month between August, either wild crab or cultivated crabs are all difficult to buy in the market, are unable to satisfy consumer demand.
In addition, 1 year one batch of breeding way, cultivating pool have the vacant phase, inevitably cause the wave of cultivating pool
Take.
Summary of the invention
In order to fill up demand of the May to consumer between August to Portunus trituberculatus Miers, and the utilization rate in pond is improved, to obtain
Higher culture efficiency, the present invention provides a kind of cultural methods of Portunus trituberculatus Miers two crops in one year.
The technical solution adopted by the invention is as follows:
A kind of cultural method of Portunus trituberculatus Miers two crops in one year,
(I) aquaculture model:
First batch: ovigerous crab being put into nursery garden by the end of April, cultivates large size seedling seed, to being just transferred to August by the end of July
Culture zone, emasculation stay it is female, cultivation to 250-350 grams/only finished product cream crab, listed in month next year 1-2;
Second batch: second batch ovigerous crab being put into nursery garden at the beginning of the August, large size seedling seed is cultivated, to nursery after November
Area's heat preservation, helps young crab to pass the winter, until being transferred to culture zone mid-April next year, 150-200 grams/of finished product is arrived in male and female mixed breeding, cultivation
Fresh crab catches since June and stays greatly small, continues to by the end of July;
(II) pond prepares:
Selection trend is unobstructed, pollution-free, salinity is 23 ~ 27, sand mud bottom or silt bottom, sets drainage lock and block, area
Cultivating pool greater than 10 mu is removed the mud of bottom of pond, and is sterilized with bleaching powder;Divide nursery garden in the cultivating pool and supports
Two panel region of area is grown, the nursery garden is separated with culture zone by the public ridge, and the public ridge is equipped with connection nursery garden and supports
Grow area from turn seedling device;The area ratio of the nursery garden and culture zone is 1:6 to 1:8;The nursery garden is equipped with detachable
Warm canopy;Plastic covering smooth plate in the surrounding of the cultivating pool and the public ridge;The center of the nursery garden and culture zone is
Platform, surrounding are zanjon, and things concealed is arranged on the platform, and aerator is set in the zanjon, the depth of water 0.3 at the platform ~
0.4 meter, 1.5 meters of the depth of water or more at the zanjon.
Described from turn seedling device includes horn mouth net cylinder, and the major part of the horn mouth net cylinder is connected to nursery garden, little Tou Lian
Logical culture zone, the microcephaly of the horn mouth net cylinder are equipped with the inverted beard structure for being directed toward culture zone;The large size seedling seed is by nursery
Area is transferred to culture zone by being automatically performed from turn seedling device: luring crab to enter horn mouth net cylinder using the habit that crab bores cave, transports
With night lights lure with bait lure technology, complete from turn seedling;The night lights lure technology, i.e., in night in loudspeaker
A lamp is hung by mouth net cylinder, using the light habit that becomes of crab, swimming crab is attracted to pass through horn mouth net cylinder;The bait lures skill
Art stops at nursery garden and feeds that is, between turning seedling stage, the more bait throwing in material of horn mouth net cylinder neighbouring position in the culture zone, inhales
Draw swimming crab across horn mouth net cylinder;It is equipped with flashboard or web plate at the major part of the horn mouth net cylinder, is not put between turn seedling stage
Flashboard and web plate are set, second batch of cultivation places flashboard to during the heat preservation of nursery garden, remaining time places web plate.
It is described first batch cultivation emasculation stay it is female steps are as follows, swimming crab can with the naked eye distinguishing is other when, select fine day
At night 19 ~ 20 when on the bank of culture zone sling incandescent lamp, with the aggregation of light trapping children crab, then be put into basin after being caught with the string bag
In, choose male crab, the male crab of all female crabs and part is reentered into culture zone in the ratio of 6:1.
Ovigerous crab in the nursery garden is launched by nursery garden area with the quantity of 10/mu.
At the beginning of 4 months, the razor clam seedling of hanging of neat specification is launched in the culture zone, razor clam seedling shell of hanging is 1.5 centimetres long, mu injected volume 50,000
Gram.
The aquaculture model of the corresponding Portunus trituberculatus Miers two crops in one year, at the beginning of the August with late April next year, in two times in institute
Investment japonicus seedling in culture zone is stated, mu injected volume is respectively 1.8 ten thousand tails and 2.5 ten thousand tails, japonicus harvesting time difference
For mid-December and mid or late July next year.
The things concealed is several rectangular baskets for having a side opening, the side opening direction one of the rectangular basket
It causes, be evenly arranged on platform;Rectangular basket density in the nursery garden is big, specification is small, and the rectangular basket in the culture zone is close
Spend that small, specification is big.
The beneficial effects of the present invention are: cultivating pool is divided into nursery garden and culture zone two parts by the present invention, will originally compared with
The long culture-cycle is divided into two cultivation stages, shorten to Portunus trituberculatus Miers 4 ~ 6 months in the culturing time of culture zone, and leads to
Excess temperature canopy keeps the temperature nursery garden, may make the young crab in second batch of cultivation smoothly to pass the winter, this is all Portunus trituberculatus Miers two crops in one year
Cultivation provide guarantee;The cultural method of the two crops in one year has filled up the supply blank in May to Portunus trituberculatus Miers between August, full
Foot consumer demand, while the utilization rate in pond is improved, cultivating pool of the same area can obtain higher economic benefit.
Detailed description of the invention
Fig. 1 is the schematic top plan view of cultivating pool in the embodiment of the present invention.
Fig. 2 is the schematic cross-section of cultivating pool in the embodiment of the present invention.
Fig. 3 is in the embodiment of the present invention from the schematic diagram of turn seedling device.
Fig. 4 is the schematic diagram of things concealed in the embodiment of the present invention.
Nursery garden A, culture zone B, the public ridge 1, from turn seedling device 2, warm canopy 3, platform 4, zanjon 5, horn mouth net cylinder 6,
Inverted beard structure 7, flashboard 8, web plate 9, things concealed 10.
Specific embodiment
Below with reference to embodiment, the invention will be further described with attached drawing.
The cultural method of Portunus trituberculatus Miers two crops in one year in embodiment, as shown in attached drawing 1, attached drawing 2, main technical point
It is as follows.
(I) aquaculture model:
First batch: ovigerous crab being put into nursery garden by the end of April, cultivates large size seedling seed, to being just transferred to August by the end of July
Culture zone, emasculation stay it is female, cultivation to 250-350 grams/only finished product cream crab, listed in month next year 1-2;Second batch: in general at the beginning of August
Second batch ovigerous crab is put into nursery garden, cultivates large size seedling seed, keeps the temperature after November to nursery garden, helps young crab to pass the winter, until next year 4
The middle of the month is transferred to culture zone, male and female mixed breeding, cultivation to 150-200 grams/finished product Fresh crab only, caught since June stay greatly it is small,
Continue to by the end of July.
In the present embodiment, the ovigerous crab in the nursery garden A is launched by nursery garden A area with the quantity of 10/mu, and big
About 50 grams of size seedling seed/only.
Cultivating pool is divided into nursery garden and culture zone two parts by the cultural method of the present embodiment, originally longer will be supported
Growing the period is divided into two cultivation stages, shorten to Portunus trituberculatus Miers 4 ~ 6 months in the culturing time of culture zone, and by educating
Seedling Qu Baowen may make the young crab in second batch of cultivation smoothly to pass the winter, this cultivation all for Portunus trituberculatus Miers two crops in one year provides
Guarantee;The cultural method of the two crops in one year has filled up the supply blank in May to Portunus trituberculatus Miers between August, has met consumer
Demand;The utilization rate in pond is improved simultaneously, and cultivating pool of the same area can obtain higher economic benefit.
(II) pond prepares:
Selection trend is unobstructed, pollution-free, salinity is 23 ~ 27, sand mud bottom or silt bottom, sets drainage lock and block, area
Cultivating pool greater than 10 mu is removed the mud of bottom of pond, and is sterilized with bleaching powder;Divide in the cultivating pool nursery garden A with
Two panel region of culture zone B, the nursery garden A and culture zone B are separated by the public ridge 1, and the public ridge 1 is equipped with connection nursery
Area A and culture zone B from turn seedling device 2;The area ratio of the nursery garden A and culture zone B is 1:6 to 1:8;The nursery garden
A is equipped with dismountable warm canopy 3;Plastic covering smooth plate in the surrounding of the cultivating pool and the public ridge 1;The nursery garden A with
The center of culture zone B is platform 4, and surrounding is zanjon 5, and things concealed is arranged on the platform 4, sets aerator in the zanjon 5,
0.3 ~ 0.4 meter of the depth of water at the platform 4,1.5 meters of the depth of water or more at the zanjon 5.
The cultivating pool of the present embodiment generally requires biggish cultured area, could obtain scale and benefit in this way, to reduce
Aquaculture cost.Cultivating pool is other than early period needs dredging to sterilize, in the interval that each batch cultivates, it is also desirable to carry out dredging and disappear
Poison.
The nursery garden A and culture zone B of the present embodiment are separated by the public ridge 1, mutual spacing from close, convenient for nursery garden A with
Turn seedling between the B of culture zone, and plastic covering smooth plate is to prevent crab from escaping and two on the surrounding of cultivating pool and the public ridge 1
Crab mixing in cultivating pool.
The present embodiment nursery garden A selection wind sheltering, on the sunny side and close to intake gate position, conducive to nursery garden A heat preservation with
Regulating and controlling water quality.
The warm canopy 3 of the present embodiment includes frame, ceiling, and according to condition, steel, concrete brick stone structure is can be used in frame,
Rod can also be used or bamboo pole is set up, ceiling uses disconnectable plastic film, film is covered when A needs to keep the temperature in nursery garden,
Remaining period dismantles film.In addition, nursery garden A using warm canopy 3 when being kept the temperature, the power of aerator should be increased suitably.
The cultivating pool of the present embodiment can suitably be sanded in bottom of pond, and cement plate, net can be used in the things concealed on platform 4
The economy such as piece, watt cylinder, branch, bamboo cane, common material.
Preferably, the things concealed 10 is several rectangular baskets for having a side opening, and the side of all rectangular baskets is spacious
Mouth is arranged on platform 4 towards consistent and uniform;Rectangular basket density in the nursery garden A is big, specification is small, in the culture zone B
Rectangular basket density is small, specification is big.Rectangular basket is having a size of 20cm*15cm*18cm in the A of nursery garden, rectangular basket size in the B of culture zone
For 40 cm *, 25 cm *, 25 cm, the two is of different sizes, to adapt to different size of swimming crab.Above-mentioned rectangular basket can be by waste and old
Plastic crate is divided into two, low in cost, is arranged in the B of culture zone by 500/mu, sets in the A of nursery garden by 2000/mu
It sets.The things concealed 10 of the present embodiment can reach optimal hidden effect, this, body reliable at rear that tend to hide with swimming crab
Body or so and top have the habit in masking place consistent.It goes out further, since swimming crab can leave things concealed 10 night
Forage, so the things concealed 10 of same crab and being not fixed, it may appear that unordered the phenomenon that seizing things concealed 10 between swimming crab individual,
And the side opening of rectangular basket can avoid to a certain extent swimming crab face-to-face towards unanimously, because robbing between reduction swimming crab individual
It accounts for things concealed 10 and generates fight.
(III) regulating and controlling water quality:
Water quality indicator: salinity 20-26 ‰, PH8.5-8.9, the mg/litre of DO>5, ammonia nitrogen<0.4 mg/litre, nitrite<
0.15 mg/litre keeps water quality pure and fresh, and water colour is in yellow green or yellowish-brown;Continue the oxygenation aeration into cultivating pool, aeration dress
The impeller supercharger set is arranged by 3 kilowatts/10 mu;It is sterilized every two weeks using the full pond of povidone iodine, it is primary to change water weekly, changes water
Amount is no more than 1/3, is appropriately extended and changes the water time when sea area water quality is bad, and water level in cultivating pool is improved when high temperature, strong cold air,
Timely venting upper layer fresh water after heavy rain.
(IV) bait feeding:
Swimming crab can feed fresh and alive animal bait based on animal feed, can also feed mixed feed, feed and adhere to
" quantitative ", " timing ", " positioning ", " determining matter " four principle.
The cultivation of regulating and controlling water quality, bait feeding and other technical details and common Portunus trituberculatus Miers in the present embodiment
It is similar.
The cultural method of Portunus trituberculatus Miers two crops in one year in embodiment also has other technologies special as shown in Fig. 3
Point.
It is described from turn seedling device 2 include horn mouth net cylinder 6, the major part connection nursery garden A, small of the horn mouth net cylinder 6
Head connection culture zone B, the microcephaly of the horn mouth net cylinder 6 are equipped with the inverted beard structure 7 for being directed toward culture zone B;The big specification seedling
Kind is transferred to culture zone B by being automatically performed from turn seedling device 2 by nursery garden A: luring crab to enter loudspeaker using the habit that crab bores cave
Mouth net cylinder 6, with night lights lure with bait lure technology, complete from turn seedling;At the major part of the horn mouth net cylinder 6
Equipped with flashboard 8 or web plate 9, from flashboard 8 and web plate 9 is not placed between turn seedling stage, second batch of cultivation is put to during nursery garden A heat preservation
Flashboard 8 is set, remaining time places web plate 9.
The night lights lure technology hangs a lamp in night by horn mouth net cylinder 6, practised using the light that becomes of crab
Property, attract swimming crab to pass through horn mouth net cylinder 6;The bait lure technology stops at nursery garden A and feeds that is, between turning seedling stage,
The more bait throwing in material of 6 neighbouring position of horn mouth net cylinder in the culture zone B attract swimming crab to pass through horn mouth net cylinder 6.
The present embodiment passes through the replacement of flashboard 8 and web plate 9, interconnect the water body of nursery garden A and culture zone B can both mutually
It is logical, and can be mutually isolated, the demand flexible modulation that can be kept the temperature according to regulating and controlling water quality and nursery garden A.
It is described first batch cultivation emasculation stay it is female steps are as follows, swimming crab can with the naked eye distinguishing is other when, select fine day
At night 19 ~ 20 when on the bank of culture zone B sling incandescent lamp, with the aggregation of light trapping children crab, then be put into water after being caught with the string bag
In basin, choose male crab, the male crab of all female crabs and part is reentered into the B of culture zone in the ratio of 6:1.The first of the present embodiment
Stubble cultivation uses swimming crab emasculation cultural technique, and the most of male crab of harvesting, it is more to not only reduce female crab in the breeding process
Secondary post-coitum death and phenomenon of killing each other, and the price of female swimming crab (cream crab) is much higher than male crab, therefore can obtain higher
Economic value.
In addition, the present embodiment does not influence the mixed breeding and intercropping of swimming crab Yu other kinds, with japonicus, swimming crab and hang
For razor clam mixed breeding: on the basis of two crops in one year swimming crab normally cultivates, at the beginning of 4 months, launching neat specification in the culture zone B
Hang razor clam seedling, razor clam seedling shell of hanging is 1.5 centimetres long, 50 kilograms of mu injected volume, August just and late April next year, in two times in the culture zone
Japonicus seedling is put into B, mu injected volume is respectively 1.8 ten thousand tails and 2.5 ten thousand tails, and the harvesting time for razor clam of hanging is Japan at the beginning of 12 months
The prawn harvesting time is respectively mid-December and mid or late July next year.
Test cultivating pool in Zhoushan Region uses the present embodiment cultural method, and first batch can produce shuttle crab cream crab about
About 35,000 grams/acre of double centner/mu, japonicus, second batch can produce about 125,000 grams/acre of swimming crab Fresh crab, japonicus about 30
Thousand grams/acre, it can additionally harvest and hang about 350,000 grams/acre of razor clam.Compared with existing swimming crab, shrimp shellfish mixed breeding technology, pond unit
For area swimming crab output increased up to 80%, cultivation net profit improves 50% or more.
Obviously, the above embodiment of the present invention is intended to be merely illustrative of the present example, and not to the present invention
Embodiment restriction.For those of ordinary skill in the art, it can also make on the basis of the above description
Other various forms of variations or variation.There is no need and unable to give poor example to all embodiments.And these belong to this
The connotation changes and variations that derived from of invention still fall within protection scope of the present invention.
Claims (7)
1. a kind of cultural method of Portunus trituberculatus Miers two crops in one year, it is characterised in that:
(I) aquaculture model:
First batch: ovigerous crab being put into nursery garden by the end of April, cultivates large size seedling seed, to being just transferred to cultivation to August by the end of July
Area, emasculation stay it is female, cultivation to 250-350 grams/only finished product cream crab, listed in month next year 1-2;Second batch: by second at the beginning of the August
It criticizes ovigerous crab and is put into nursery garden, cultivate large size seedling seed, nursery garden is kept the temperature after November, helps young crab to pass the winter, until in 4 months next years
It is transferred to culture zone ten days, male and female mixed breeding, cultivation catches since June to 150-200 grams/finished product Fresh crab only and stays greatly small, continue
To by the end of July;
(II) pond prepares:
Selection trend is unobstructed, pollution-free, salinity is 23 ~ 27, sand mud bottom or silt bottom, set drainage lock and block, area are greater than
10 mu of cultivating pool is removed the mud of bottom of pond, and is sterilized with bleaching powder;
It is divided to nursery garden (A) and culture zone (B) two panel region in the cultivating pool, the nursery garden (A) and culture zone (B) are logical
The public ridge (1) is crossed to separate, the public ridge (1) be equipped with connection nursery garden (A) and culture zone (B) from turn seedling device (2);
The area ratio of the nursery garden (A) and culture zone (B) are 1:6 to 1:8;
The nursery garden (A) is equipped with dismountable warm canopy (3);
Plastic covering smooth plate in the surrounding of the cultivating pool and the public ridge (1);
The center of the nursery garden (A) and culture zone (B) are platform (4), and surrounding is zanjon (5), are arranged on the platform (4) hidden
It covers object (10), sets aerator in the zanjon (5), 0.3 ~ 0.4 meter of the depth of water at the platform (4), the depth of water at the zanjon (5)
1.5 meters or more.
2. the cultural method of Portunus trituberculatus Miers two crops in one year according to claim 1, it is characterised in that:
Described from turn seedling device (2) includes horn mouth net cylinder (6), and the major part of the horn mouth net cylinder (6) is connected to nursery garden
(A), microcephaly is connected to culture zone (B), and the microcephaly of the horn mouth net cylinder (6) is equipped with the inverted beard structure for being directed toward culture zone (B)
(7);
The large size seedling seed is transferred to culture zone (B) by being automatically performed from turn seedling device (2) by nursery garden (A): utilizing crab
The habit for boring cave lures crab to enter horn mouth net cylinder (6), with night lights lure with bait lure technology, complete from turn
Seedling;
The night lights lure technology hangs a lamp in night by horn mouth net cylinder (6), practised using the light that becomes of crab
Property, attract swimming crab to pass through horn mouth net cylinder (6);
The bait lure technology stops at nursery garden (A) and feeds that is, between turning seedling stage, the horn mouth in the culture zone (B)
The more bait throwing in material of net cylinder (6) neighbouring position attract swimming crab to pass through horn mouth net cylinder (6);
At the major part of the horn mouth net cylinder (6) be equipped with flashboard (8) or web plate (9), from do not placed between turn seedling stage flashboard (8) with
Web plate (9), second batch of cultivation place flashboard (8) to during nursery garden (A) heat preservation, remaining time places web plate (9).
3. the cultural method of Portunus trituberculatus Miers two crops in one year according to claim 1, it is characterised in that: described first batch is supported
The emasculation grown stay it is female steps are as follows, swimming crab can with the naked eye distinguishing is other when, select fine day at night 19 ~ 20 when in culture zone
(B) incandescent lamp is sling on bank, with the aggregation of light trapping children crab, then is put into basin after being caught with the string bag, is chosen male crab, will be complete
The male crab of the female crab in portion and part is reentered into culture zone (B) in the ratio of 6:1.
4. the cultural method of Portunus trituberculatus Miers two crops in one year according to claim 1, it is characterised in that: the nursery garden
(A) ovigerous crab in is launched by nursery garden (A) area with the quantity of 10/mu.
5. the cultural method of Portunus trituberculatus Miers two crops in one year according to claim 1, it is characterised in that: at the beginning of 4 months, described
The razor clam seedling of hanging of neat specification is launched in culture zone (B), and razor clam seedling shell of hanging is 1.5 centimetres, 50 kilograms of mu injected volume long.
6. the cultural method of Portunus trituberculatus Miers two crops in one year according to claim 1, it is characterised in that: corresponding three wart
The aquaculture model of swimming crab two crops in one year, at the beginning of the August with late April next year, in two times investment Japan in the culture zone (B)
To shrimp seedling, mu injected volume is respectively 1.8 ten thousand tails and 2.5 ten thousand tails, and the japonicus harvesting time is respectively mid-December and July next year
The middle ten days and the last ten days.
7. the cultural method of Portunus trituberculatus Miers two crops in one year according to claim 1, it is characterised in that: the things concealed
It (10) is several rectangular baskets for having a side opening, the side opening of the rectangular basket is arranged in flat towards consistent and uniform
On platform (4);Rectangular basket density in the nursery garden (A) is big, specification is small, and the rectangular basket density in the culture zone (B) is small, rule
Lattice are big.
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CN110338114B (en) * | 2019-08-16 | 2022-03-22 | 浙江省海洋水产研究所 | Out-of-season female and male separate breeding method for portunus trituberculatus |
CN110338113B (en) * | 2019-08-16 | 2022-08-19 | 浙江省海洋水产研究所 | Out-of-season swimming crab seedling raising method |
CN112568158B (en) * | 2020-12-09 | 2022-02-22 | 中国水产科学研究院黄海水产研究所 | Green pollution-free culture method for stichopus japonicus, penaeus japonicus, portunus trituberculatus and ulva |
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