Sampling device and sampling method for pond-culture flatfish
A sampling device, the technology of flounder flounder, applied in fishing, application, animal husbandry, etc., can solve the problems of time-consuming and labor-intensive sampling of rotary nets and hand-drawn nets, easy damage to fish bodies, large deviations, etc., to increase the number of people entering the sampling device The probability of avoiding escape and the effect of large bottom length
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[0055] Example 1
[0056] From May to November 2013, during the implementation of the "National Flounder Industrial Technology System-Pond Aquaculture Project" project at the Water Conservancy Farm in Rizhao City, Shandong Province, we used the sampling device of the present invention and the spinning net to make a comparison of random sampling of flounder test.
[0057] 1. Test conditions and basic overview
[0058] The aquaculture method and the pond are an engineered pond full-circulating water system, and the aquaculture water is natural seawater. During the summer high temperature period, the underground deep well low-temperature seawater is used to adjust the aquaculture water temperature, and the daily water exchange rate is 50% to 80%. The water quality parameters during the whole breeding process are: water temperature 14~29℃, dissolved oxygen 5.1~8.5mg / L, salinity 26~30, pH 7.8~8.2. On May 15th, the monomer area of 4.5 mu in the whole system was used. A total of 6 small...
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[0071] Example 2
[0072] From early May to early December 2012, we used the sampling device of the present invention to carry out sampling experiments during the implementation of the "Sea Cucumber and Paralichfish Pond Polyculture Technology Demonstration" project at Youcheng Marine Science and Technology Development Co., Ltd. in Wudi County, Shandong Province.
[0073] 1. Test conditions and basic overview
[0074] There are 3 sea cucumber and Japanese flounder polyculture ponds, with an area of 48 acres (pond 9), 44 acres (pond 10), and 47 acres (pond 11), with a water depth of 1.00 to 1.20m. There are sea cucumber reefs in the ponds. An average of 500 heads / 500g of sea cucumber 10kg per mu is stocked, and the size of paralichthys olivaceus fry is 155mm (140~168mm) with an average body length of 20,000 fish, including 4,800 fish in No.9 pond, 6,600 fish in No.10 pond, and No.11 There are 8 600 fish in the pond. Sea cucumbers are not fed with bait. The humus in the pond and th...
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