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Method for constructing green alga phase in saline-alkali soil underground water shrimp industrial culture pond

A construction method and a culture pond technology, which are applied in the field of construction of green algae and algae phases in industrialized shrimp culture ponds in saline-alkali groundwater, can solve problems such as light absorption obstruction, shrimp culture failure, death, etc., and achieve strong adaptability, benefit water quality regulation and, The effect of preventing algae

Active Publication Date: 2016-08-24
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI +1
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  • Summary
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Problems solved by technology

In addition, during the breeding process, high-density microalgae are prone to die due to the obstruction of light absorption

Method used

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  • Method for constructing green alga phase in saline-alkali soil underground water shrimp industrial culture pond

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Experimental program
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Effect test

Embodiment 1

[0028] The experiment was carried out in Jiaozhou Brackish Water Shrimp Industrialized Farming Experimental Field (the experiment time was from May to August 2015, a total of 84 days). The stocking density of Litopenaeus vannamei is 300 fish / m 3 . The cement pools used in the experiment are circular (radius = 0.97m, height = 1.0m), 36 in total, 30 of which are inoculated with Selina australis, and operated according to the above method; 6 are traditional "dry water" breeding methods, without inoculation For microalgae, the daily water change is 10-30%. During the experiment, the salinity was (20.78±0.06)‰, and the temperature was (29.87±0.13)℃.

[0029] The results showed that the algae phase was stable during the culture period of the group inoculated with Sclerophytum Qingdao, while Microcystis and filamentous green algae appeared in the later stage of culture in the traditional culture group; the total inorganic nitrogen in the water body of the group inoculated with Qing...

Embodiment 2

[0031] The experiment was carried out in Jiaozhou Brackish Water Shrimp Industrialization Experimental Field (experimental time was August-November 2015, a total of 105 days). The stocking density of Litopenaeus vannamei is 400 fish / m 3 . The cement pools used in the experiment are square (5.7m×5.7m×1.2m), 80 in total, 70 of which were inoculated with Sclerophytum japonicus according to the above method, and the other 10 were not inoculated with microalgae. During the experiment, the salinity was (20.15±0.04)‰, and the temperature was (24.28±2.23)℃.

[0032] At the end of the experiment, the total inorganic nitrogen in the water body of the experimental group was 81.2% lower than that of the control group, and the yield of prawns inoculated with Sclerophytum Qingdao was (4.1-4.7) kg / m 2 , the output of shrimp without inoculation with Chlorella vulgaris is only (3.3-3.7) kg / m 2 .

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Abstract

The invention provides a method for constructing green alga phase in a saline-alkali soil underground water shrimp industrial culture pond, and belongs to the technical field of aquaculture. The green alga is platymonas helgolandica. The method comprises the following specific steps of: constructing an alga phase during a preparation period, maintaining the alga phase at the early stage of culture and maintaining the alga phase at the middle-late stage of culture. According to the method, euryhalic, high-temperature-resistant and high-adaptability platymonas helgolandica is adopted to construct the alga phase, so that the water quality of brackish water shrimp industrial culture is optimized, and healthy and rapid growth of shrimps is promoted.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for constructing a green algae phase in a groundwater prawn factory culture pond in a saline-alkali land. Background technique [0002] The diseases such as Acute Hepatopancreas Necrosis Syndrome (AHPNS) / Early Mortality Syndrome (EMS) of Litopenaeus vannamei caused by Vibrio parahaemolyticus have caused huge losses to the shrimp farming industry. As a halophilic bacteria, the lower the salinity, the slower the growth and reproduction of Vibrio parahaemolyticus. Therefore, the culture of Litopenaeus vannamei in saline-alkaline groundwater has a higher success rate. Due to the high pH and carbonate alkalinity of groundwater in saline-alkali land, the water quality is thin and the number of plankton is small. Therefore, experienced shrimp farmers often "dry the water" in the reservoir first, and then use "green water" to raise shrimp. However, the diversity of micro...

Claims

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Application Information

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IPC IPC(8): A01G33/00
CPCA01G33/00Y02A40/22Y02A40/80Y02P60/20
Inventor 李健葛红星刘云峰沈明明柳飞
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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