First, breeds
1. Shrimp: There are mainly Penaeus vannamei, Macrobrachium rosenbergii, Green prawns, and Australian lobster.
2, fish: There are squid, California cricket, Taihu white fish, yellow croaker, yellow bream, conventional fish.
3, crab oysters: There are crabs, turtles.
Second, basic conditions for breeding
1, shrimp pool:
(1) Shrimp pond: Culture of Penaeus vannamei, Macrobrachium rosenbergii, and Green prawns. The pond area is required to be 8 to 15 mu, the width of the pond is 2 to 3 meters, the ratio of length to width is 3 to 1, and the ratio of pool slope is 1:2.5. ~3, the water depth is not less than 1.2 ~ 1.8m, the bottom mud is maintained at about 10cm; the lobster cultured in Australia requires the pond area to be 5 ~ 6 mu, the pond ratio is 1:2.5 ~ 3, the water depth is 1 ~ 1.2m, and the pond is noodles It is 2 to 3m wide, and a 40cm high high-calc plastic hoarding is needed around the pool to prevent escape. At the same time, the inlet is filtered with a 40 or 60 mesh double layer sieve.
(2) Green shrimp breeding ponds and feed fish breeding ponds, with an area of ​​3 to 6 mu, a water depth of 1.2 to 1.5 m, and an appropriate amount of silt at the bottom of the pond. Filters should be used at the inlet.
2, crab pool:
The pond area is 10 to 30 mu, the pond surface is 2 to 3 meters wide, the ratio of length to width is 3:1, the ratio of pool slope is 1:2.5 to 3, the water depth is not less than 1.2 to 1.5 meters, the bottom mud is kept in proper amount, and the pond is surrounded Calcium-plastic plates are needed to prevent escape.
3, salmon, California Dianchi:
The pond area is 3 to 10 acres, the pond surface is 2 to 3 meters wide, the slope ratio is 1:2 to 2.5, the water depth is not less than 1.5 to 1.8 meters, and the amount of sediment is appropriate.
4, into the fish pond:
The pond area is 20 to 40 mu, the pond is 3 to 5 meters wide, the pool slope is 1:2 to 2.5, the water depth is 1.5 to 2 meters, and the bottom sludge is 20 to 30 cm.
5, shrimp and shrimp polyculture pool:
Pond area of ​​2 to 5 acres, depth of 1.2 ~ 1.5m, pool slope ratio of 1:3, four weeks to do a good job of escape prevention facilities, in the north facing south with a cement board set up feed.
6, Lake swing net Wai:
The fence area is 30 to 40 mu, and the water depth is 1.5m. The water is fresh, the environment is good, the transparency is 40cm, the water flow is gentle, the bottom is flat, the bottom is strong, the mud is at 10cm, and the cage area has rich sources of food.
Third, breeding model reference
1, shrimp:
(1) The first quarter of the pond was reared with Penaeus vannamei and the latter season's green shrimp: The period of the first quarter of South American white shrimp reared from early April to early August was 0.7 cm in size and 50,000 in Mu. After the season of shrimp culture in mid-August to the following year in February, specifications 1.5 ~ 2cm, mu put 50,000.
(2) Pre-season green shrimp and post-season white shrimp: The first quarter of the shrimp culture period is from early February to early May, with a specification of 3 to 4 cm and an acre of 15 kg. After the season of white shrimp, culture time from late May to late October, specification 0.7cm, mu put 50,000.
(3) Cultivation of ponds, shrimps, and shrimps: Former spring shrimp (spring) is cultured from February to June, with specifications of 3 to 4 cm and mu of 20 to 30 kg. After the season of fresh shrimp (Autumn) breeding time from July to January next year, specifications 1.5cm, acres put 60,000.
(4) Cultivation of carp seedlings before ponds and rearing of white shrimps from South America: From April to May of the previous carp ponds, specifications are 1.0 to 1.5 cm, and 1.2 to 15,000 mu per mu. After the white prawns, the breeding time is from June to October, the specification is 0.7cm, and 50,000 mu is placed.
(5) Ponds South America White prawn reared twice for breeding: The whole breeding period is from early April to mid-to-late October. The first time in early April, 50,000 larvae with a specification of 0.7 cm are stocked, and the second culturing time is In early June, 30,000 shrimp of 0.7cm specifications were used.
(6) Ponds Macrobrachium two times of stocking and rearing: breeding time from early April to mid-to-late October, the first time in early April, stocking specifications of 0.8cm shrimp 50,000, and the second time in mid-May. 0.8cm shrimp seedlings 30,000.
(7) Ponds Freshwater lobsters in Australia: From late April to early November, the specifications range from 1.5 to 2.0 cm, and 3000 to 4000 tails per mu.
2, crab shrimp fish polyculture:
(1) Polyculture of pond crabs and shrimps: Crab breeding time is from February to November, specifications are from 6 to 8g per mu, and 500 to 600 mu per mu. Green shrimp (spring) breeding time from February to June, stocking specifications 2.5 ~ 3.5cm, mu put 10 ~ 15kg, fresh shrimp (autumn) breeding time from July to next January, specifications 1.5cm, mu put 40,000. Carp culture time is from May to January of the next year, specifications 6 ~ 8cm, mu put 15 to 20 tails.
(2) Pond, crab, shrimp and cockroach polyculture: crab breeding time from February to November, specifications 6 ~ 8g / only, 500 ~ 600 acres. Green shrimp (spring) breeding time in the 2 to 6 months, stocking specifications 2.5 ~ 3.5cm, mu put 10 ~ 15kg, fresh shrimp (autumn) breeding time from July to next January, specifications 1.5cm, mu put 40,000. Trout farming time is from July to January of the next year, stocking specifications 6 ~ 8cm, mu put 15 to 20 tails.
(3) Polyculture of pond crabs, shrimps, and stingrays: Crab breeding time from February to November, specifications of 6 to 8 g per animal, 500 to 600 acres per mu. Green shrimp (spring) breeding time from 2 to 6 months, specifications 2.5 ~ 3.5cm, mu put 10 ~ 15kg, fresh shrimp (autumn) breeding time from July to next January, specifications 1.5cm, mu put 40,000. Stingray breeding time from February to next January, specifications 10g / tail, mu 200-300.
(4) Pond crabs, California polyculture: crab breeding time from February to November, specifications 6 ~ 8g / only, acres put 300. California salmon breeding time from May to next January, specifications 8 ~ 10cm, acre put 900.
(5) Polyculture of pond puffers and green prawn: The breeding time is from mid-May to mid-February, and the specifications are 150-200g per mu, and 1000-1200 mu per mu. Green shrimp breeding time from mid-July to February of the following year, specifications 1.5cm, mu put 40,000.
(6) Pond polyculture of river crabs and whitefish: Crab breeding time from February to November, specifications of 6 to 8g per animal, and 400 acres per mu. White fish breeding time from mid-July to February of the following year, specifications 1.5cm, mu put 40,000.
(7) Lake swinging nets to raise crabs: Crab breeding time from February to November, specifications 6 ~ 8g / only, acres put 350.
3, carp, whitefish, feed fish breeding culture:
(1) Main carp pond rearing: The carp rearing time is from May to February of the following year. The specifications are 6~7cm, and 800~1000 mu.
(2) Whitefish pond main raising: Whitefish breeding time from February to December of next year, specifications 10 ~ 12cm, 1000 acres per acre.
(3) Pond Feeding: Fish rearing and breeding: Carp breeding time is from mid-March to late May, specifications are 0.5 to 0.7cm, and Mu is put at 500,000. The second carp breeding time is from late May to late July, with a specification of 600 tails per kg and a mu of 30,000 tails. The third carp breeding time from early July to early August, specifications 0.7 to 1.5cm, mu put 40,000. The fourth carp breeding time is from early August to mid-October with a specification of 4000 tails/kg and a mu of 30,000.
(4) Feeding fish in front of ponds and rearing shrimps in aquaculture: Feeding fish in front of aquaculture Three fishes for “fish, eel, and squid†and fourth quail cultured for green prawn from the beginning of August to February of the following year. Specification 1.5 ~2.0cm, 40,000 mu.
4. Conventional fish ponds raise white fish and add cages to raise yellow quail:
(1) Adult fish rearing fish ponds: The conventional fish breeding time is from February to January of the following year, and the specification is “Liankou and Jinliang†mu of 150kg. Whitefish nestling time in February, specifications for 10 ~ 12cm, 50 acres of laying.
(2) Adding cages to adult fish ponds to raise yellow peony: The conventional fish breeding time is from February to January of the following year, and the specification is 200kg of “Tsaikou, Jinliang†mu. Astragalus aquaculture time from July to January next year, specifications 50g / tail, density 40 / square meters, with 1 square meters of water surface set 6 square meters cage is appropriate.
IV. Precautions Twenty cases of the above aquaculture model are mainly summarized in the successful experience in the city's aquaculture in recent years, as a reference for the breeding adjustment model. Due to the rapid changes in market demand, farmers need to analyze the market conditions, breeding conditions, seed sources, facilities, and outbound time factors to determine the stocking species, specifications and the density of polyculture. In order to achieve targeted results, we can ultimately gain high efficiency.
Author: Jiangsu Wujiang Aquatic Technology Promotion Station
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