Low carbon fish, shrimp and shellfish mixed breeding method

A technology of polyculture of fish and shrimp, applied in the direction of fish farming, application, climate change adaptation, etc., can solve the problems of destroying the breeding environment, high stocking density, and lack of control of sewage discharge, achieve high utilization rate, reduce carbon emissions, and benefit The effect of environmental protection

Active Publication Date: 2013-12-11
广州先得生物技术有限公司
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AI Technical Summary

Problems solved by technology

Due to the pursuit of high yield year after year, high stocking density, and lack of control on sewage discharge, it has caused eutrophication in nearby waters and seriously damaged the breeding environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of polyculture method of fish, shrimp and shellfish:

[0020] (1) Preparatory stage: Pond water depth 1.5-2.0 meters, area 3-10 mu, pond-slope ratio 1:2.5-1:3.0, equipped with an aerator / 667m 2 ;

[0021] (2) Disinfection and fertilization: When the temperature rises from February to March, start to disinfect the whole pool with bleaching powder (25kg / hm). After 7-10 days, the toxicity disappears and water is started. After watering, fertilize every day and choose the type of fertilization. For commercially available urea and calcium dihydrogen phosphate, the fertilization ratio is N:P=1:0.3;

[0022] (3) Throwing seedlings: When stocking seedlings, keep the water color yellow-green or light yellow-green, and put in clam seedlings when the water depth is 70-100 cm. The stocking density of clam seedlings is 100 kg / 667m 2 , Penaeus vannamei seedlings are put in 5 days after the clam seedlings are put in (the water temperature is roughly stable above 20°C), and af...

Embodiment 2

[0026] In the Hezhou North Breeding Base in Doumen District, Zhuhai, there are 3 ponds with an area of ​​7 mu / mouth. On April 5, 2012, river clam seedlings were put in. The stocking density was 100 kg / mu, and 0.8-1.0 cm was put in on April 12. Vannamei seedlings were stocked at a density of 2,500 fish / mu. On April 22, 2-3 cm tilapia seedlings were released at a density of 20,000 fish / mu. After a cycle of breeding, 500 kg of tilapia, 200 kg of vannamei shrimp and 300 kg of river clams are harvested per mu. The economic benefits per mu increased by 3,000 yuan, and the water exchange volume was reduced by more than 30%, achieving good economic and ecological benefits.

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Abstract

The invention relates to a low carbon fish, shrimp and shellfish mixed breeding method. The mixed breeding method comprises the steps that Corbicula fluminea seedlings, Penaeus vannamei Boone seedlings and Tilapia mossambica seedlings are thrown in sequence, the Penaeus vannamei Boone seedlings are thrown within five to seven days after the Corbicula fluminea seedlings are thrown, the Tilapia mossambica seedlings are thrown within seven to ten days after the Penaeus vannamei Boone seedlings are thrown, and after the Corbicula fluminea seedlings are thrown, Tilapia mossambica complete formula feed is fed everyday. By the adoption of the mixed breeding method of firstly throwing the Corbicula fluminea seedlings, the Corbicula fluminea can eat organic detritus and alga in water, the carbon sequestration effect is played through growth of shells, and accordingly carbon emission is lowered; in addition, the mixed breeding method only needs one kind of feed, namely the Tilapia mossambica complete formula feed, the utilization rate of the feed is high, little nitrogen, phosphorous and the like is discharged, and environment protection is facilitated.

Description

technical field [0001] The invention belongs to the field of aquaculture, and relates to a mixed culture method for aquatic products, in particular to a low-carbon and environment-friendly mixed culture method for fish, shrimp and shellfish. Background technique [0002] With the rapid development of the aquaculture industry, the aquaculture model has changed from single species to semi-intensive and then to high-density intensification. With the improvement of the level of intensification and the increase of the breeding density of aquaculture animals, the residual bait and metabolites eaten by them have increased significantly, which exceeds the purification capacity of the water body itself. Therefore, once the water quality changes, the feeding, Growth will be severely affected, leading to poisoning, disease and death. In addition, problems such as disease prevention and control, food safety and environmental pollution caused by intensive high-density farming have becom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 王广军龚望宝谢骏余德光
Owner 广州先得生物技术有限公司
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