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Mixed culturing technology of gracilaria and epinephelinae

A technology for grouper and Gracilaria, applied in fish farming, climate change adaptation, horticulture, etc., can solve the problems of high cost, large manpower, and material resources, and achieve the goal of increasing biomass, promoting growth, and reducing ecological risks Effect

Inactive Publication Date: 2015-05-27
GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, artificial breeding mainly adopts a single breeding mode that consumes a lot of manpower, material resources and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Selection of Gracilaria seedlings and grouper fry: choose Gracilaria seedlings with a length of about 60 mm; choose grouper fry with a body length of about 75 mm and a weight of about 26 g.

[0028] 2) Pre-stocking preparation: build 1600 m along the coast of Jiaomen Waterway 2 There are 4 ponds on the left and right, with a depth of about 3.5 m. The ponds are easy to drain and drain, and the bottom is sandy or sandy. The ponds were cleaned with fresh water in the early stage. Disinfect and sterilize the pond with bleaching powder; pour fresh seawater into the pond 0.5 months before stocking, keep the water depth at about 2.8 m in summer, control the discharge and entry of aquaculture water and fresh seawater, and control the salinity of the pond water. 25 ‰, sprinkle lime in the pool water to adjust the pH value to about 8.2.

[0029] 3) Stocking of Gracilaria and grouper: When Jiaomen just entered summer in mid-to-late April, put Gracilaria seedlings first (the fr...

Embodiment 2

[0033] Present embodiment adopts Gracilaria and grouper polyculture technology, and its concrete steps are as follows:

[0034] 1) Selection of Gracilaria seedlings and grouper fry: choose Gracilaria seedlings with a length of about 45 mm; choose grouper fry with a body length of 40 mm and a weight of about 12 g.

[0035] 2) Pre-stocking preparations: build 400 m in Binhai, Nansha, Guangzhou 2 There are 4 ponds on the left and right, with a depth of about 1.8 m. The ponds are easy to drain and drain, and the bottom is sandy or sandy. The ponds were cleaned with fresh water in the early stage. Disinfect and sterilize the pond with bleaching powder; 18 days before stocking, fresh seawater is introduced into the pond, and the water depth is kept at about 1.5 m in summer. , Sprinkle lime in the pool water to adjust the pH to about 7.8.

[0036] 3) Stocking of Gracilaria and grouper: in mid-May when Guangzhou just entered summer, put Gracilaria seedlings first (the fresh weight d...

Embodiment 3

[0040]1) Selection of Gracilaria seedlings and grouper fry: Select Gracilaria seedlings with a length of 40mm~75mm; choose grouper fry with a body length of 40~120mm and a weight of 5~50g; the grouper is temperate , subtropical and other warm-water coastal waters such as blue grouper, red-spotted grouper, oblique-striped grouper, and spotted grouper;

[0041] 2) Pre-stocking preparations: set up inlet and drainage ditches in the pond, and clean, disinfect and sterilize the pond body; fill the pond with seawater, the height of which is 0.3~0.7m lower than the lowest point of the pond; After filtering to remove the larger diameter suspended solids in the original seawater, adjust and keep the temperature of the seawater at 18~28℃, the salinity of the seawater at 11~41‰, and the pH at 7.8~8.7; (or do not set the pond, but into seine culture in the near sea)

[0042] 3) Stocking of Gracilaria and grouper: From March to November every year, the fresh weight density is 0.3~3.0kg / m ...

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Abstract

The invention discloses a mixed culturing method of gracilaria and epinephelinae. The method is characterized in that a pond culturing mode is adopted, a water inlet channel and a water outlet channel are formed in a pond, and cleaning, sterilizing and disinfecting need to be firstly carried out on a pond body; then seawater can be poured into the pond, and the water quality can be regulated to adapt to culturing; the depth of water in the pond is 0.3m-0.5m, and a pond-slope ratio is 1 / 5; the occupied culturing area of the gracilaria in the pond is more than 3 / 5, and the density for putting the epinephelinae is smaller than that of the epinepelinae which are independently cultured. According to the method disclosed by the invention, a high economic additional value and a high nutrient value of mixed culturing of the gracilaria and the epinephelinae are utilized; compared with the prior art, the mixed culturing technology has no need to apply a large amount of fertilizer to a water body, thus the pollution on the water body can be effectively avoided, substances of N and P in the water body can be effectively removed by the gracilaria in mixed culturing, the eutrophication of the water body can be effectively prevented, and higher ecological benefits can be obtained; meanwhile, the cost is low, the output is high, the economic benefit is good, and the method is a better source approach for supplementing the epinephelinae resource and broadening the gracilaria resource along the coast.

Description

technical field [0001] The invention relates to a seawater culture technology, in particular to the polyculture technology of Gracilaria and grouper. Background technique [0002] In recent years, with the rapid development of the mariculture industry and the improvement of people's living standards, the consumption of rare aquatic products has also increased; due to the high requirements for individual breeding of rare aquatic products, most of the rare aquatic products have been adopted Single farming method; the single farming method not only wastes the space in the water layer, but also accumulates fish excrement and surplus bait in the water body during the breeding process, which will lead to a decrease in dissolved oxygen in the water body, causing eutrophication of the water body and fish rot. The occurrence of diseases has seriously affected the economic and ecological benefits of farming. Polyculture can make full use of the water space, but for unreasonable polyc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G33/00A01K61/00
CPCY02A40/81
Inventor 陈步丹吴世凯汪凤敏郭亮
Owner GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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