Method for ecologically breeding III-stage juvenile crabs into1-age crab variety through salt marsh wetland

A technology for young crabs and wetlands, applied in fish farming, application, climate change adaptation, etc., can solve problems that have not been developed and utilized, and achieve the effect of increasing self-sufficiency

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

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Problems solved by technology

According to the regional hydrological data, the underground freshwater resources in the sal

Method used

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  • Method for ecologically breeding III-stage juvenile crabs into1-age crab variety through salt marsh wetland

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specific Embodiment approach 1

[0032] Specific implementation mode one: a method for ecologically cultivating larval crabs of stage III in salt marsh wetlands into 1-year-old crab species according to the present embodiment is carried out through the following steps:

[0033] 1. Selection of cultivation pool:

[0034] ⅰ. Location: ①The terrain is relatively low-lying and easy to transform; ②The vegetation coverage exceeds 80%, and the biomass is 1.0kg / m 2 Above, there is no need to artificially plant aquatic plants; ③Underground fresh water resources are relatively abundant, or close to surface water diversion channels to ensure sufficient water sources; ii. Area: too large or too small area of ​​the cultivation pool is not conducive to water quality control and management, and the value of 1.0~ 2.0hm 2 appropriate;

[0035] 2. Establish a fresh water source guarantee system:

[0036] The third-stage larvae and the first-year-old crab species are suitable for living in freshwater environments, but the sa...

specific Embodiment approach 2

[0045] Specific implementation mode 2: The difference between this implementation mode and specific implementation mode 1 is that the establishment of a fresh water source guarantee system in step 2 is to drill a motor-driven well to extract underground fresh water, and at the same time build surface water diversion channels to utilize surface fresh water. The two complement each other . Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0046]Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the slope-shaped ring ditch in step three is a ring-shaped ditch with a width of 8-10m excavated around and inclined 8°-10° to the surroundings. Embankment, so that the water depth at the lowest part of the ring ditch reaches 1.2-1.5m. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method for ecologically breeding III-stage juvenile crabs into a 1-age crab variety through salt marsh wetland. The method aims at breeding the 1-age crab variety through the salt marsh wetland, and the problem about self-supply oflarge-scale commercial rivercrabs of the 1-age crab variety is solved. The method includes the steps of 1, selection of a breeding pond; 2, establishment of a fresh water source security system; 3, creation of a suitable habitat; 4, culturingof natural bait; 5, reasonable stocking; 6, scientific management.

Description

technical field [0001] The invention belongs to the technical field of wetland fishery, and in particular relates to a method for ecologically cultivating third-stage juvenile crabs into first-year-old crab species in salt marsh wetlands. technical background [0002] Cultivation of 1-year-old crab species is the most important link in the commercial river crab breeding process. In recent years, with the rapid development of river crab aquaculture, the demand for first-year-old crab species has been increasing. The Longzhao Salt Marsh in the west of Jilin Province is located in the floodplain of the lower reaches of the Huolin River, with a total area of ​​151,900 / hm 2 , is one of the important types of swamp wetlands in my country, and has been included in the "Chinese Marsh History" (the unified number of national swamps is 220882-037). The wet area of ​​Longzhao Salt Marsh is also the main breeding area for commercial river crabs in Jilin Province, and the output of com...

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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