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A method for ecologically cultivating third-stage larvae in salt marsh wetland underground brackish water

A brackish water and wetland technology, applied in application, climate change adaptation, fish farming, etc., can solve problems such as the inability to realize the cultivation of juvenile crabs in the third stage

Active Publication Date: 2020-04-03
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 inland freshwater areas, and provides a method for ecologically cultivating stage III stage larvae in salt marsh wetland underground brackish water

Method used

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  • A method for ecologically cultivating third-stage larvae in salt marsh wetland underground brackish water
  • A method for ecologically cultivating third-stage larvae in salt marsh wetland underground brackish water
  • A method for ecologically cultivating third-stage larvae in salt marsh wetland underground brackish water

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specific Embodiment approach 1

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

[0022] 1. The location selection of the cultivation pool: the selection area is 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 described Underground shallow brackish water in the natural salt marsh wetland has a single well output of 100m 3 / 24h;

[0023] 2. Dig a slope-shaped ring ditch: dig a ring-shaped ditch near the edge of the cultivation pool; the ring-shaped ditch is slope-shaped and inclined from the center of the cultivation pool to the edge of the pool, and is 6° to 8° from the horizontal plane; T...

specific Embodiment approach 2

[0029] Embodiment 2: This embodiment differs from Embodiment 1 in that: the width of the annular ditch described in step 2 along the horizontal plane is 8m, and the water depth at the lowest point of the annular ditch is 1.1m. Others are the same as the first embodiment.

specific Embodiment approach 3

[0030] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the depth of the deep-water well described in Step 3 is 80m. Others are the same as those in Embodiment 1 or 2.

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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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Patent Type & Authority Patents(China)
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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