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A method for ecologically cultivating larval crabs of third stage in salt marsh wetlands into first-year-old crab species

A technology for young crabs and wetlands, applied in application, climate change adaptation, fish farming, etc., can solve problems such as untapped utilization, and achieve the effect of improving self-sufficiency.

Active Publication Date: 2020-11-27
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

According to the regional hydrological data, the underground freshwater resources in the salt marsh area of ​​Longzhang are very rich, but they have not yet been developed and utilized.

Method used

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  • A method for ecologically cultivating larval crabs of third stage in salt marsh wetlands into first-year-old crab species

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Experimental program
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Effect test

specific Embodiment approach 1

[0033] 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:

[0034] 1. Selection of cultivation pool:

[0035] 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;

[0036] 2. Establish a fresh water source guarantee system:

[0037] 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

[0046] 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

[0047]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. [0002] technical background [0003] 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 outpu...

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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