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 PDF

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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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crab
culture zone
nursery garden
year
crops
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CN107361001A (en
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何杰
许文军
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Zhejiang Marine Fisheries Research Institute
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Zhejiang Marine Fisheries Research Institute
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • A01K61/50Culture of aquatic animals of shellfish
    • A01K61/59Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

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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

The cultural method of Portunus trituberculatus Miers two crops in one year
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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