Pond polyculture method for pseudosciaena crocea and portunus trituberculatus

A technology of portunus trituberculatus and large yellow croaker, applied in fish farming, application, climate change adaptation, etc., to achieve high survival rate, low killing rate and good growth effect

Inactive Publication Date: 2012-10-24
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although those skilled in the art know the advantages of polyculture, there are few research results specifically related to the polyculture method among various organisms. The key point is that the polyculture technology involves the selection of biological compatibility, the control of adaptation ratio, and mutual applicability. The combination of ecological environment design, regulation of breeding water quality, feed management, disease control and other factors; this requires comprehensive research and continuous testing to obtain a more suitable mixing technology between suitable varieties. A report on polyculture technology in ponds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of pond polyculture method of large yellow croaker and Portunus trituberculatus, selects a culture pond of 30 mu, digs a ring ditch with a width of 1.5 to 2 meters and a depth of 0.8 to 1 meter around the pond, and uses The polyethylene mesh with a length of 1.5 meters and a height of 40 centimeters is connected to each other to form a Z-shaped isolation belt. The polyethylene mesh is provided with mesh holes with a diameter of 20 centimeters, and 300 pieces of polyethylene mesh are provided per mu of ring ditch. Carry out dredging and quicklime disinfection to the pond before stocking in a suitable place, the amount of quicklime is 250 jins of ponds per mu, then pour clean seawater into the pond water, the depth of the pond water of the ring ditch is 2 to 2.5 meters, add inorganic and organic fertilizers in the pond water ( Inorganic and organic fertilizers commonly used to cultivate phytoplankton, such as urea, ammonium phosphate, animal manure, etc.), the nitro...

Embodiment 2

[0019] A kind of pond polyculture method of large yellow croaker and portunus trituberculatus, is basically the same as embodiment 1, and difference is only that the breeding pond is 20 mus, and ring ditch width is 1.5~2 meters, and depth is 0.5~0.8 meters, and every mu ring The ditch is equipped with 280 pieces of polyethylene mesh, the diameter of the hole on the polyethylene mesh is 15 cm; the amount of quicklime per mu of pond is 200 kg, the water depth of the ring ditch is 1.5 to 2 meters, and the nitrogen and phosphorus ratio of the pool water is controlled at 1: 5 to 10 days, 12 to 15 days of natural cultivation of phytoplankton; the stocking amount of large yellow croaker fry is 4,000, and the large yellow croaker fry are soaked in fresh water for 3 minutes before stocking; after 10 to 15 days of large yellow croaker fry stocking, use 1.5 kg of compound microorganisms per acre of pond to control Water quality, the mass ratio of nitrifying bacteria, bacillus and photosyn...

Embodiment 3

[0021]A kind of pond polyculture method of large yellow croaker and portunus trituberculatus is substantially the same as embodiment 1, and difference is that every mu ring ditch is provided with 320 polyethylene mesh sheets, and the diameter of the hole on the polyethylene mesh sheets is 15 centimeters; The amount of quicklime per mu of ponds is 300 catties; the amount of large yellow croaker fry is 9,000; each mu of ponds uses 0.6 kg of compound microorganisms to control water quality, and the mass ratio of nitrifying bacteria, bacillus and photosynthetic bacteria in the compound microorganisms is 1:5:1; The portunus trituberculatus seedlings of this specification in every mu pond have a total weight of 10 jin; the economic benefits shown in Table 3 have been achieved.

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Abstract

The invention discloses a pond polyculture method for pseudosciaena crocea and portunus trituberculatus. In the method, a Z-shaped isolation belt formed by an annular channel and polyethylene net sheets is arranged in a pond, so the portunus trituberculatus can better grow, and the massacre rate among the portunus trituberculatus is low; phytoplankton cultivated naturally before culturing is favorable for the self-purification of water quality and the growth of the pseudosciaena crocea and the portunus trituberculatus; and the breeding density per mu of pseudosciaena crocea seedlings and portunus trituberculatus seedlings in the pond is regulated and controlled, so that the recycling rate of feed and excrement is high, the self-purification rate of a water body is good, the survival ratesof the pseudosciaena crocea and the portunus trituberculatus are as high as more than 55 percent and more than 25 percent respectively, and the cultured pseudosciaena crocea is high in quality. Simultaneously, the water quality is regulated and controlled by composite microbes during aquaculture, so that microalgae can grow in a balanced way, and the purification of the water quality and the growth of the pseudosciaena crocea and the portunus trituberculatus are facilitated. Therefore, the method is a pond polyculture method for the pseudosciaena crocea and the portunus trituberculatus, whichcan ensure good polyculture effect and high survival rate, quality and economic efficiency.

Description

technical field [0001] The invention relates to a polyculture technology of marine organisms, in particular to a method for polyculture of large yellow croakers and portunus trituberculatus in ponds. Background technique [0002] At present, large yellow croaker is mainly cultured in coastal cages. Although it makes up for the shortage caused by the shortage of wild large yellow croaker resources, the quality of fish meat is very different from that of wild large yellow croaker. Deterioration, disease rampant, germplasm degradation, breeding efficiency is getting lower and lower. At present, portunus trituberculatus are mainly cultivated in ponds, and the water depth is generally 0.5-2 meters. Since portunus trituberculatus mainly live on the bottom of the pond, a large amount of water has not been fully utilized, and the efficiency of pond cultivation per unit area is low. The mixing technology of different species is the research direction of scientific researchers in rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 徐永健卢光明陆慧贤葛奇伟孙斌戴广谱
Owner NINGBO UNIV
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