Ecological breeding method for polyculture of scylla serrata and penaeus japonicus in coastal areas of Northern Jiangsu Province

A technology for ecological breeding and scylla

Inactive Publication Date: 2020-08-18
JIANGSU COASTAL AREA AGRI SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese invention patent publication numbers CN1951182, CN1951182101228850, CN103392653B, CN106879522A, and CN108419720A respectively disclose a method for cultivating organic blue crabs, a method for cultivating two batches of mud crabs a year, a met...

Method used

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Embodiment 1

[0020] In 2018, Meifen Mariculture Co., Ltd. in Xiangshui County in the coastal area of ​​northern Jiangsu carried out polyculture of mud crabs and prawns in a culture pond with an area of ​​50 mu. Before entering the water, use bleaching powder to clear the pond, and after drying the pond for about 20 days, it will start to enter the water. The water source is filtered outer pond water, and the water depth should be kept at 1.5m.

[0021] 300,000 juveniles of Penaeus japonicus with an initial body length of about 8 mm were mixed with 15,000 juveniles of Scylla serrata megalopa. Embed 40cm in the soil with a double-layer plastic film around the pond, the film is 60cm higher than the pond stalk, and fix it with a bamboo pole to prevent blue crabs from escaping. The shrimp and crab compound feeds are fed every day, at 6:00 in the morning and 16:00 in the afternoon, respectively, and the daily feeding amount is appropriately increased or decreased according to the eating situatio...

Embodiment 2

[0024] In 2019, Meifen Mariculture Co., Ltd. in Xiangshui County, a coastal area in northern Jiangsu, carried out polyculture of mud crabs and prawns in a culture pond with an area of ​​50 mu. Before entering the water, use bleaching powder to clear the pond, and after drying the pond for 20 days, it will start to enter the water. The water source is filtered outer pond water, and the water depth should be kept at 1.5m.

[0025] 250,000 juveniles of Penaeus japonicus with an initial body length of about 8 mm were mixed with 20,000 juveniles of Scylla serrata megalopa. Embed 40cm in the soil with a double-layer plastic film around the pond, the film is 60cm higher than the pond stalk, and fix it with a bamboo pole to prevent blue crabs from escaping. The shrimp and crab compound feeds are fed every day, at 6:00 in the morning and 16:00 in the afternoon, respectively, and the daily feeding amount is appropriately increased or decreased according to the eating situation. Change ...

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Abstract

The invention relates to an ecological breeding method for polyculture of scylla serrata and penaeus japonicus in coastal areas of Northern Jiangsu Province. The method comprises the steps of (1) selection of a breeding pond; (2) disinfection of the breeding pond; (3) application of fertilizer and water, wherein water is fed 10 days before young scylla serrata is released, the water depth is 0.3m,20mg/L of nitrogenous fertilizer and 2mg/L of phosphatic fertilizer are applied, the pond water is dark brown or yellow green or tawny, and the transparency is 40cm; (4) releasing of young penaeus japonicus; (5) throwing of penaeus japonicus feed; (6) throwing of young scylla serrata, wherein when penaeus japonicus grows to 2-3cm, young scylla serrata is thrown according to the density of 300-400young scylla serrata per mu; (7) throwing of scylla serrata feed; (8) water quality management; (9) disease control; and (10) harvesting. By means of the breeding method, the breeding survival rate of megalopa of scylla serrata is not lower than 13%, the breeding survival rate of penaeus japonicus is not lower than 75%, the weight of bred scylla serrata individuals is 350-500g, the weight of bredpenaeus japonicus individuals is 5-10g, diseases are few, the breeding effect is remarkable, and the method has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of mariculture, and in particular relates to an ecological breeding method for mixed cultivation of mud crabs and prawns in the northern Jiangsu coastal area. Background technique [0002] Scylla serrata ( Scylla serrata ) belongs to Crustacea, Portunidae. It likes to live in caves in the shallow sea near the coast and in the sandy bottom of the estuary. It is ferocious and carnivorous, and its staple food is fish, shrimp and shellfish. The meat is delicious, nutritious, and has the effect of nourishing and strengthening the body. In particular, female crabs that are about to become pregnant will produce red or yellow cream in their bodies. This is called "cream crab" in southern China, and is known as "sea ginseng". Rich in warm shallow seas, mainly distributed in Zhejiang, Guangdong, Guangxi, Fujian and the coastal areas of Taiwan, especially in Jiangsu and Zhejiang. Scylla is rich in protein and trace...

Claims

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Application Information

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IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 马晶晶成钰王凯陈美芬林才勇
Owner JIANGSU COASTAL AREA AGRI SCI RES INST
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