Method for ecologically breeding III-stage juvenile crabs through salt marsh wetland underground brackish water

A brackish water and wetland technology, applied in fish farming, application, climate change adaptation, etc., can solve problems such as the inability to realize stage III crab breeding

Active Publication Date: 2018-06-08
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the technical problem that the cultivation of stage III larvae cannot be realized in current inlan

Method used

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  • Method for ecologically breeding III-stage juvenile crabs through salt marsh wetland underground brackish water
  • Method for ecologically breeding III-stage juvenile crabs through salt marsh wetland underground brackish water
  • Method for ecologically breeding III-stage juvenile crabs through salt marsh wetland underground brackish water

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Example Embodiment

[0021] Specific implementation mode 1: This implementation mode is a method for cultivating stage III young crabs in salt marsh wetland underground brackish water ecology, which is specifically carried out according to the following steps:

[0022] 1. The location of the cultivation pond: choose an area of ​​0.5hm 2 ~1hm 2 The natural salt marsh wetland area is used as a breeding pond for young crabs; the terrain of the natural salt marsh wetland is more than half a meter lower than the ground level; the emergent vegetation coverage of the natural salt marsh wetland exceeds 80%; The water output of a single well of shallow brackish water in the natural salt marsh wetland reaches 100m 3 / 24h;

[0023] 2. Dig a slope-shaped ring trench: dig a circle of ring-shaped trenches inside the cultivation pond near the edge of the pond; the ring-shaped trench is slope-shaped and inclined from the center of the cultivation pond to the edge of the pond, and is 6°-8° to the horizontal; The width ...

Example Embodiment

[0029] Specific embodiment two: this embodiment is different from specific embodiment one in that the width of the annular groove along the horizontal plane described in step two is 8m, and the water depth at the lowest part of the annular groove is 1.1m. Others are the same as the first embodiment.

Example Embodiment

[0030] Specific embodiment three: This embodiment is different from specific embodiment one or two in that the depth of the deep water well described in step three is 80m. Others are the same as the first or second embodiment.

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Abstract

The invention provides a method for ecologically breeding III-stage juvenile crabs through salt marsh wetland underground brackish water, and relates to a method for salt-breeding the III-stage juvenile crabs. The method aims at solving the technical problem that breeding of the III-stage juvenile crabs cannot be achieved in inland fresh water regions currently. The method includes the steps of 1,selection of the place of a breeding pool; 2, digging of a slope-shaped annular groove; 3, establishment of a water source; 4, cultivating of high-quality palatable bait; 5, juvenile crab releasing;6, feed supplementing; 7, water supplementing. The method aims at developing and utilizing salt marsh wetland underground brackish water resources to ecologically breed the III-stage juvenile crabs, creating advantages for breeding one-year-old juvenile crabs and achieving the purpose of self-feed or partial self-feed of one-year-old juvenile crabs in the large-scale commercial crab breeding industry. After 28 days of breeding by means of the method for ecologically breeding the III-stage juvenile crabs through the salt marsh wetland underground brackish water, the average specification of theIII-stage juvenile crabs bred from juvenile crabs can reach 60.67 mg, and the survival rate reaches 25.79%. The method is applied to breeding the III-stage juvenile crabs.

Description

technical field [0001] The invention relates to a method for cultivating stage III larvae with salt. Background technique [0002] In recent years, with the rapid development of wetland river crab aquaculture, the demand for first-year-old crab species has been increasing. The Longzhao Salt Marsh Wetland in the west of Jilin Province (National Swamp Unified No. 220882-037) is located in the floodplain of the lower reaches of the Huolin River, with a total area of ​​151,900 hm 2 , is the main breeding area for commercial crabs in Jilin Province, with a current breeding area of ​​36,700 hm 2 , the annual requirement of 1-year-old crab species is more than 1 million kg, and they must be purchased from Panjin, Liaoning. The transportation cost exceeds 1.5 million yuan, and the survival rate is lower than 80%. It can be seen that solving the self-sufficiency or partial self-sufficiency of the first-year-old crab species has become the key and urgent need to reduce costs and inc...

Claims

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Application Information

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IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 杨富亿
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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