CN107361001A - 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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- CN107361001A CN107361001A CN201710753401.8A CN201710753401A CN107361001A CN 107361001 A CN107361001 A CN 107361001A CN 201710753401 A CN201710753401 A CN 201710753401A CN 107361001 A CN107361001 A CN 107361001A
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- 241001533364 Portunus trituberculatus Species 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 24
- 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 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000005516 engineering process Methods 0.000 claims description 12
- 238000003306 harvesting Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000005276 aerator Methods 0.000 claims description 5
- 241000238557 Decapoda Species 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
- 239000007844 bleaching agent Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 208000000260 Warts Diseases 0.000 claims 1
- 201000010153 skin papilloma Diseases 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 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
- 239000011425 bamboo Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000013372 meat Nutrition 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
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-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
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000011456 concrete brick Substances 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000004459 forage Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 235000008935 nutritious Nutrition 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 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
- 239000004576 sand Substances 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 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 method of Portunus trituberculatus Miers two crops in one year, its aquaculture model is：Ovigerous crab is put into nursery garden by first batch by the end of April, cultivates large size seedling seed, and to being just transferred to culture zone to August by the end of July, emasculation is stayed female, cultivates to 250 350 grams/finished product cream crab only, was listed 12 months next years；Second batch ovigerous crab is put into nursery garden by second batch at the beginning of August, cultivate large size seedling seed, nursery garden is incubated after November, young crab is helped to pass the winter, culture zone is transferred to mid-April next year, male and female mixed breeding, cultivates the finished product Fresh crab to 150 200 grams/, caught since June and stay greatly small, continued to by the end of July.The cultural method of the present invention, has filled up May to the supply blank of 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 technology
Portunus trituberculatus Miers is that Chinese Fishery cultivates one of important kind, and its delicious meat is nutritious, 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.At present, the cultural method of Portunus trituberculatus Miers mainly has two kinds：One kind is by the end of April
To nursery at the beginning of 5 months, former pool cultivation, around the Spring Festival（The 1-3 months）Fishing listing；Another kind is at the end of May to period purchase crab at the beginning of 6 months
Seedling, cultivate to around the Spring Festival（The 1-3 months）Listing.
Above-mentioned cultural method be 1 year one batch, selling time concentrate and also it is of short duration, it is therefore desirable to by catching wild shuttle
Sub- crab fills up the demand in market.But with year by year reinforcement of the country to fishery conservation dynamics, the closed fishing season can increasingly be grown.
2017, fishing off season of Portunus trituberculatus Miers was May 1 to August 1 day, can not catch wild swimming crab during this period.Therefore 5
The moon, either wild crab or cultivated crabs, in the market were all difficult to buy, and can not meet consumer demand between August.
In addition, 1 year one batch of breeding way, cultivating pool have the vacant phase, inevitably cause the wave of cultivating pool
Take.
The content 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 benefit, the invention provides a kind of cultural method of Portunus trituberculatus Miers two crops in one year.
The technical solution adopted by the present 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 is 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：Second batch ovigerous crab is put into nursery garden at the beginning of August, cultivates large size seedling seed, nursery garden is protected after November
Temperature, help young crab to pass the winter, culture zone, male and female mixed breeding are transferred to mid-April next year, 150-200 grams/of finished product meat is arrived in cultivation
Crab, caught since June and stay greatly small, continued to by the end of July；
（Ⅱ）Pond prepares：
Selection trend is unobstructed, pollution-free, salinity is 23 ~ 27, husky mud bottom or silt bottom, set drainage lock and block, area are more than
10 mu of cultivating pool, the mud of bottom of pond is removed, and sterilized with bleaching powder；Divide nursery garden and culture zone in the cultivating pool
Two panel regions, the nursery garden are separated with culture zone by the public ridge, and nursery garden and culture zone are communicated with the public ridge
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 dismountable temperature
Canopy；Plastic light slide plate is covered in the surrounding of the cultivating pool and the public ridge；The center of the nursery garden and culture zone is platform,
Surrounding is zanjon, and things concealed is set on the platform, sets aerator in the zanjon, 0.3 ~ 0.4 meter of the depth of water at the platform,
More than 1.5 meters of the depth of water at the zanjon.
It is described to include horn mouth net cylinder, the major part connection nursery garden of the horn mouth net cylinder, little Tou Lian from turn seedling device
Logical culture zone, the microcephaly of the horn mouth net cylinder are provided with the inverted beard structure for pointing to culture zone；The large size seedling seed is by nursery
Area is transferred to culture zone by being automatically performed from turn seedling device：The habit that cave is bored using crab lures crab to enter horn mouth net cylinder, transports
With night lights lure with bait lure technology, complete from turn seedling；The night lights lure technology, i.e., in night in loudspeaker
One lamp of suspension by mouth net cylinder, using the light habit that becomes of crab, attracts swimming crab to pass through horn mouth net cylinder；The bait lures skill
Art, i.e., between seedling stage is turned, stop at nursery garden and feed, the more bait throwing in material of horn mouth net cylinder neighbouring position in the culture zone, inhale
Draw swimming crab and pass through horn mouth net cylinder；Flashboard or web plate are provided with the major part of the horn mouth net cylinder, is not put between turn seedling stage
Flashboard and web plate are put, flashboard is placed in second batch of cultivation to nursery garden during insulation, and remaining time places web plate.
The emasculation of first batch of cultivation stays female step as follows, when swimming crab can use discernable by eye sex, selects fine day
At night 19 ~ 20 when on the bank of culture zone sling incandescent lamp, assembled with light trapping children crab, then basin is put into after being caught with the string bag
In, choose male crab, all will press 6 with the male crab in part by female crab：1 ratio is reentered into culture zone.
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 grows 1.5 centimetres, mu injected volume 50,000
Gram.
The aquaculture model of the corresponding Portunus trituberculatus Miers two crops in one year, at the beginning of August with late April next year, at twice in institute
Input japonicus seedling in culture zone is stated, mu injected volume is respectively 1.8 ten thousand tails and 2.5 ten thousand tails, and the japonicus harvesting time is distinguished
For mid-December and mid or late July next year.
The things concealed carries the open square basket in a side to be some, and the side of the square basket is open towards one
Cause, be evenly arranged on platform；Square basket density in the nursery garden is big, specification is small, and the square basket in the culture zone is close
Spend that small, specification is big.
The beneficial effects of the invention are as follows：Cultivating pool is divided into nursery garden and culture zone two parts by the present invention, will script compared with
The long culture-cycle is divided into two cultivation stages, culturing time of the Portunus trituberculatus Miers in culture zone is shorten to 4 ~ 6 months, and leads to
Excess temperature canopy is incubated to nursery garden, may be such that the young crab in second batch of cultivation smoothly passes 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, May has been filled up to the supply blank of Portunus trituberculatus Miers between August, it is full
Foot consumer demand, while the utilization rate in pond is improved, cultivating pool of the same area can obtain higher economic benefit.
Brief description of the drawings
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 from the schematic diagram of turn seedling device in the embodiment of the present invention.
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.
Embodiment
With reference to embodiment, the invention will be further described with accompanying drawing.
The cultural method of Portunus trituberculatus Miers two crops in one year in embodiment, as shown in accompanying drawing 1, accompanying drawing 2, its main technical point
It is as follows.
（Ⅰ）Aquaculture model：
First batch：Ovigerous crab is 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 August
Criticize ovigerous crab and be put into nursery garden, cultivate large size seedling seed, nursery garden is incubated after November, helps young crab to pass the winter, into 4 months next years
It is transferred to culture zone ten days, male and female mixed breeding, cultivation to 150-200 grams/finished product Fresh crab only, is caught since June and stay greatly small, continued
To by the end of July.
In the present embodiment, the ovigerous crab in the nursery garden A is launched by nursery garden A areas with the quantity of 10/mu, and big
About 50 grams of size seedling seed/only.
The cultural method of the present embodiment, cultivating pool is divided into nursery garden and culture zone two parts, originally longer is supported
Growing the cycle is divided into two cultivation stages, culturing time of the Portunus trituberculatus Miers in culture zone is shorten to 4 ~ 6 months, and by educating
Seedling area is incubated, and may be such that the young crab in second batch of cultivation smoothly passes the winter, this cultivation all for Portunus trituberculatus Miers two crops in one year provides
Ensure；The cultural method of the two crops in one year, May has been filled up to the supply blank of 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, husky mud bottom or silt bottom, set drainage lock and block, area are more than
10 mu of cultivating pool, the mud of bottom of pond is removed, and sterilized with bleaching powder；Divide nursery garden A and cultivation in the cultivating pool
The panel regions of area B two, the nursery garden A and culture zone B are separated by the public ridge 1, and nursery garden A is communicated with the public ridge 1
With culture zone B from turn seedling device 2；The nursery garden A and culture zone B area ratio is 1：6 to 1：8；The nursery garden A matches somebody with somebody
There is dismountable warm canopy 3；Plastic light slide plate is covered in the surrounding of the cultivating pool and the public ridge 1；The nursery garden A and cultivation
Area B center is platform 4, and surrounding is zanjon 5, and things concealed is set on the platform 4, aerator is set in the zanjon 5, described
0.3 ~ 0.4 meter of the depth of water at platform 4, more than 1.5 meters of the depth of water at the zanjon 5.
The cultivating pool of the present embodiment generally requires larger cultured area, could so obtain scale and benefit, to reduce
Aquaculture cost.Cultivating pool is in addition to early stage needs desilting sterilization, the interval of the cultivation at each batch, it is also desirable to carry out desilting and disappear
Poison.
The nursery garden A and culture zone B of the present embodiment are separated by the public ridge 1, and distance is near each other, be easy to nursery garden A with
Turn seedling between the B of culture zone, and plastic light slide plate is covered on the surrounding of cultivating pool and the public ridge 1 to prevent crab from escaping and two
Crab mixing in cultivating pool.
The present embodiment nursery garden A selection wind sheltering, on the sunny side and close to intake gate position, beneficial to nursery garden A insulation with
Regulating and controlling water quality.
The warm canopy 3 of the present embodiment includes frame, ceiling, and according to condition, frame can use steel, concrete brick stone structure,
Also rod or bamboo pole can be used to set up, ceiling uses disconnectable plastic sheeting, cover film when A needs to be incubated in nursery garden,
Remaining period dismantles film.In addition, nursery garden A, when using the insulation of warm canopy 3, the power of its aerator should be increased suitably.
The cultivating pool of the present embodiment can suitably sand in bottom of pond, and the things concealed on platform 4 can use cement plate, net
Economic, the common materials such as piece, watt cylinder, branch, bamboo cane.
Preferably, the things concealed 10 carries the open square basket in a side to be some, and the side of all square baskets opens
Mouth is arranged on platform 4 towards consistent and uniform；Square basket density in the nursery garden A is big, specification is small, in the culture zone B
Square basket density is small, specification is big.Square basket size is 20cm*15cm*18cm in the A of nursery garden, square basket size in the B of culture zone
For the cm of 40 cm *, 25 cm * 25, the two is of different sizes, to adapt to different size of swimming crab.Above-mentioned square basket can be by waste and old
Plastic crate, which is divided into two, to be formed, and its cost is cheap, is set in the B of culture zone by 500/mu, is set in the A of nursery garden by 2000/mu
Put.The things concealed 10 of the present embodiment can reach optimal hidden effect, and this tends to, body reliable at rear of hiding with swimming crab
Body or so and top have the habit in masking place consistent.Gone out further, since swimming crab can leave things concealed 10 night
Forage, so the things concealed 10 of same crab is not fixed, it may appear that the unordered phenomenon for seizing things concealed 10 between swimming crab individual,
And the side of square basket is open towards unanimously, swimming crab can be avoided face-to-face to a certain extent, because robbing between reduction swimming crab individual
Account for things concealed 10 and produce fight.
（Ⅲ）Regulating and controlling water quality：
Water quality index：Salinity 20-26 ‰, PH8.5-8.9, DO>5 mg/litres, ammonia nitrogen<0.4 mg/litre, nitrite<0.15
Mg/litre, holding water quality is pure and fresh, and water colour is in yellow green or yellowish-brown；Continue the oxygenation aeration into cultivating pool, aerator
Impeller supercharger is by 3 kilowatts/10 mu settings；Sterilized every two weeks using the full pond of PVP-I, change water weekly once, quantity of exchanged water is not
More than 1/3, proper extension is changed the water time when sea area water quality is bad, and water level in cultivating pool, heavy rain are improved when high temperature, strong cold air
Timely venting upper strata fresh water afterwards.
（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 " determining
Amount ", " timing ", " positioning ", " determining matter " four principle.
The cultivation of regulating and controlling water quality, bait feeding and other ins and outs 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, it is as shown in Figure 3, also special with other technologies
Point.
It is described to include horn mouth net cylinder 6 from turn seedling device 2, it is the major part connection nursery garden A of the horn mouth net cylinder 6, small
Head connection culture zone B, the microcephaly of the horn mouth net cylinder 6 are provided with the inverted beard structure 7 for pointing to 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：The habit that cave is bored using crab lures crab to enter loudspeaker
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
Provided 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 nursery garden A during insulations
Flashboard 8 is put, remaining time places web plate 9.
The night lights lure technology, i.e., a lamp is hung on the side of horn mouth net cylinder 6 in night, utilize the light that becomes of crab to practise
Property, attract swimming crab to pass through horn mouth net cylinder 6；The bait lure technology, i.e., between seedling stage is turned, stop at nursery garden A and feed,
The more bait throwing in material of the neighbouring position of horn mouth net cylinder 6 in the culture zone B, swimming crab is attracted to pass through horn mouth net cylinder 6.
The present embodiment makes nursery garden A and culture zone B water body both can mutually interconnect by the replacing of flashboard 8 and web plate 9
It is logical, again can be with mutually isolated, can be according to regulating and controlling water quality and the demand flexible modulation of nursery garden A insulations.
The emasculation of first batch of cultivation stays female step as follows, when swimming crab can use discernable by eye sex, selects fine day
At night 19 ~ 20 when on culture zone B bank sling incandescent lamp, assembled with light trapping children crab, then water is put into after being caught with the string bag
In basin, choose male crab, all will press 6 with the male crab in part by female crab：1 ratio is reentered into the B of culture zone.The first of the present embodiment
Stubble cultivation employs swimming crab emasculation cultural technique, and the most of male crab of harvesting, it is more to not only reduce female crab in breeding process
Secondary post-coitum death and kill each other phenomenon, and female swimming crab（Cream crab）Price be far above male crab, therefore can obtain higher
Economic value.
In addition, the present embodiment does not influence the mixed breeding of swimming crab and other kinds and set is supported, with japonicus, swimming crab and hang
Exemplified by razor clam mixed breeding：On the basis of two crops in one year swimming crab normally cultivation, at the beginning of 4 months, neat specification is launched in the culture zone B
Hang razor clam seedling, razor clam seedling shell of hanging grows 1.5 centimetres, 50 kilograms of mu injected volume, August just and late April next year, at twice 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.
Experiment cultivating pool in Zhoushan Region uses the present embodiment cultural method, and first batch can produce shuttle crab crea 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 about 350,000 grams/acre of razor clam of hanging.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 more than 50%.
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 field, can also make on the basis of the above description
Other various forms of changes or variation.There is no need and unable to give poor example to all embodiments.And these belong to this
The obvious changes or variations that the connotation of invention is amplified out still falls within protection scope of the present invention.
Claims (7)
- A kind of 1. cultural method of Portunus trituberculatus Miers two crops in one year, it is characterised in that：（Ⅰ）Aquaculture model：First batch：Ovigerous crab is 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 August Criticize ovigerous crab and be put into nursery garden, cultivate large size seedling seed, nursery garden is incubated after November, helps young crab to pass the winter, into 4 months next years It is transferred to culture zone ten days, male and female mixed breeding, cultivation to 150-200 grams/finished product Fresh crab only, is caught since June and stay greatly small, continued To by the end of July；（Ⅱ）Pond prepares：Selection trend is unobstructed, pollution-free, salinity is 23 ~ 27, husky mud bottom or silt bottom, set drainage lock and block, area are more than 10 mu of cultivating pool, the mud of bottom of pond is removed, and sterilized with bleaching powder；Divide nursery garden in the cultivating pool（A）With culture zone（B）Two panel regions, the nursery garden（A）With culture zone（B）It is logical Cross the public ridge（1）Separate, the public ridge（1）On be communicated with nursery garden（A）With culture zone（B）From turn seedling device（2）； The nursery garden（A）With culture zone（B）Area ratio be 1：6 to 1：8；The nursery garden（A）Equipped with dismountable temperature canopy（3）；The surrounding of the cultivating pool and the public ridge（1）Upper covering plastic light slide plate；The nursery garden（A）With culture zone（B）Center be platform（4）, surrounding is zanjon（5）, the platform（4）Upper setting is hidden Cover thing（10）, the zanjon（5）In set aerator, the platform（4）Locate 0.3 ~ 0.4 meter of the depth of water, the zanjon（5）Locate the depth of water More than 1.5 meters.
- 2. the cultural method of Portunus trituberculatus Miers two crops in one year according to claim 1, it is characterised in that：It is described from turn seedling device（2）Including horn mouth net cylinder（6）, the horn mouth net cylinder（6）Major part connection nursery garden （A）, microcephaly connect culture zone（B）, the horn mouth net cylinder（6）Microcephaly be provided with point to culture zone（B）Inverted beard structure （7）；The large size seedling seed is by nursery garden（A）It is transferred to culture zone（B）By from turn seedling device（2）It is automatically performed：Utilize 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, i.e., in night in horn mouth net cylinder（6）One lamp of side suspension, practised using the light that becomes of crab Property, attract swimming crab to pass through horn mouth net cylinder（6）；The bait lure technology, i.e., between seedling stage is turned, stop at nursery garden（A）Feed, in the culture zone（B）Middle horn mouth Net cylinder（6）The more bait throwing in material of neighbouring position, swimming crab is attracted to pass through horn mouth net cylinder（6）；The horn mouth net cylinder（6）Major part at be provided with flashboard（8）Or web plate（9）, flashboard is not placed between turn seedling stage（8）With Web plate（9）, second batch of cultivation is to nursery garden（A）During insulation places flashboard（8）, remaining time placement 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 stays female step as follows, when swimming crab can use discernable by eye sex, select fine day at night 19 ~ 20 when in culture zone （B）Bank sling incandescent lamp, assembled with light trapping children crab, then be put into after being caught with the string bag in basin, choose male crab, will be complete The female crab in portion presses 6 with the male crab in part：1 ratio is reentered into culture zone（B）In.
- 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）Interior ovigerous crab presses nursery garden（A）Area is launched 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 Culture zone（B）The razor clam seedling of hanging of neat specification is launched, razor clam seedling shell of hanging grows 1.5 centimetres, 50 kilograms of mu injected volume.
- 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 August with late April next year, at twice in the culture zone（B）Middle input Japan 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 （10）The open square baskets in side are carried to be some, and the side opening of the square basket is arranged in flat towards consistent and uniform Platform（4）On；The nursery garden（A）In square basket density is big, specification is small, the culture zone（B）In square basket density it is small, rule Lattice are big.
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| CN110338113A (en) * | 2019-08-16 | 2019-10-18 | 浙江省海洋水产研究所 | Swimming crab season seeding method |
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