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Ion regulation and control method for breeding blue crabs in inland saline-alkali soil

A technology for saline-alkali land and mud crabs, which is applied in the field of crab breeding, can solve problems such as unsuitable mud crab breeding, and achieve the effect of improving the survival rate.

Pending Publication Date: 2022-04-12
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a lack of water quality control technology for inland saline-alkaline water mud crab breeding. The above-mentioned patents are completely unsuitable for the culture of mud crabs. Using this method to breed pseudo-cave mud crabs, the mortality rate of crab larvae is 100%.

Method used

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  • Ion regulation and control method for breeding blue crabs in inland saline-alkali soil
  • Ion regulation and control method for breeding blue crabs in inland saline-alkali soil
  • Ion regulation and control method for breeding blue crabs in inland saline-alkali soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: conventional breeding test

[0023] The test pond is located in the Small Target Aquaculture Farmers Cooperative in Yanjin County, Xinxiang City, Henan Province (Yanjin Test Pond: 35°14′19.40″N, 114°20′51.50″E) and Lankao Xinwang Zhangzhuang Aquatic Products in Kaifeng City, Henan Province Breeding professional cooperatives (Lankao test pond: 34°94′96.80″N, 114°83′65.10″E), the test ponds are all rectangular with an area of ​​10 mu, and the depth of the pond is about 2m. The salinity is 0.5-1.5, the pH is 7.8-8.3, and the water depth is controlled at 1.2-1.5m during the breeding period.

[0024] (1) Determination of aquaculture water quality

[0025] Water sample collection: The requirement for water collection is that the water level is relatively deep, and the water collection time is 8:00. The water collection device is fully washed with the water in the collection area before it is used for water collection. During the water collection, the water colo...

Embodiment 2

[0036] Embodiment 2 small water body experiment

[0037] The saline-alkaline water used in the experiment was obtained from Haizeqing Aquaculture Co., Ltd., Yanjin County, Henan Province.

[0038] Set 300mg / L and 900mg / L two Ca 2+ , Mg 2+ Total, Ca 2+ , Mg 2+ The ratios are 1:1, 1:2, 1:3 respectively, and 6 different experimental combinations are set up, and two parallels are set for each combination. Fully aerate the breeding water before use, and add Ca 2+ , Mg 2+ To be done. Before the experiment, the crab seedlings were temporarily raised for one week, and the experiment began after the crab seedlings stabilized. Salinity 1.0-1.5, pH7.8-8.6, keep water temperature 25-29 ℃ during breeding, experiment is carried out in the canvas pond of 1m * 1.5m * 0.8m ( figure 1 ), 30 young crabs were put in each canvas pond, and the clam meat was fed. The breeding experiment was carried out for 28 days, and the survival rate of blue crabs was measured after the experiment ended. ...

Embodiment 3

[0042] Application of embodiment 3 in production

[0043] 1) Crab seedlings are put into the soil pond. Select crab seedlings that have been desalinated to 1‰ and put them into the pond for cultivation ( Figure 4 ), first put the crab seedlings into a large basin, pour a little water from the pond, let the crab seedlings slowly adapt to the water quality environment of the pond, and then slowly pour them into the pond.

[0044] 2) Collection of water samples. The requirement for water collection is that the water level of the breeding pond is relatively deep, and the depth of water collection is 0.4-0.5m from the surface, and it is required to be far away from the food table and water inlet and outlet. It is then used for water collection, and the water color and blue crab activity are recorded at the same time.

[0045] 3) Determination of water quality indicators. The determination of water quality indicators mainly includes ion concentration, salinity, pH value, dissol...

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Abstract

The invention provides an ion regulation and control method for breeding blue crabs in inland saline-alkali soil. Ca2 +, Mg2 + and K + are added into a breeding water body to improve the survival rate of the blue crabs and guarantee growth and development of the blue crabs. Wherein the adding concentration of calcium ions Ca < 2 + > is 100 mg / L or above; a magnesium ion Mg < 2 + >, which is obtained by adding magnesium chloride MgCl2 and has a concentration of 200 mg / L or more, as a specific record of an embodiment; the addition concentration of potassium ions K < + > is 80 mg / L or more. According to the ion regulation and control method for inland saline-alkali soil culture, the survival rate, the growth speed and the yield of blue crabs are effectively increased. According to an existing method, blue crabs cannot be cultured in saline-alkali soil, and the death rate is extremely high. The problems of high death rate, low yield and the like of the blue crabs cultured in the saline-alkali soil can be solved only by an ion regulation method for saline-alkali soil culture, so that the blue crabs adapt to the saline-alkali soil.

Description

technical field [0001] The invention belongs to the technical field of crab cultivation, and in particular relates to an ion regulation method for cultivating mud crabs in inland saline-alkali land, so as to promote the growth of mud crabs. Background technique [0002] Scylla paramamosain, commonly known as blue crab, belongs to Arthropoda, Crustacea, Decapoda, Protuninae, and Scylla. It is a kind of euryhaline marine cultured crab, and it is the dominant species in the genus Scylla in the southeast coast of my country, which has high economic value. Because of its delicious and unique meat taste and rich nutrition, it has always been favored by the people of our country, and its breeding is widely distributed in the southeast coast of our country. [0003] In recent years, with the development of breeding models and the continuous maturity of artificial breeding technology, the breeding industry of blue crabs has developed vigorously. In addition, my country's market dema...

Claims

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Application Information

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IPC IPC(8): A01K61/59A23K20/24A23K20/20A23K50/80
CPCY02A40/81
Inventor 王欢梁国玲王春琳母昌考李幸陈宇皓高高牛铭铭秦康翔
Owner NINGBO UNIV
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