Cultivating technology of Eriocheir sinensis megalopas in inland freshwater lake
A technology of Chinese mitten crab and megalopa, applied in fish farming, application, climate change adaptation, etc.
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Embodiment 1
[0022] At the beginning of May, prepare the cultivation pool in advance. The area of the cultivation pool is 120 square meters, the depth is 1.5m, the slope of the cultivation pool wall is 1 / 3, and a drainage pipe is installed at the bottom of the cultivation pool; By adding 384kg of sea crystal, 48kg of magnesium chloride, 24kg of calcium chloride, and 24kg of potassium chloride, the salinity of the pool water is adjusted. The water temperature is 23°C, the pH value is 8, and the oxygen content is 5mg / L. The height of the pool after sterilization is 20-25cm. Hornwort and Gracilaria, covering 80% of the area;
[0023] In mid-May, when the water transparency of the pool reached 50 cm, the 6-day-old megalopa was transported by air. After arriving, the whole transport cage was immersed in the cultivation pool for 10 minutes, and then the dead and sick megalopa were picked out, and the healthy and lively megalopa were released. In the cultivation pond, the stocking density is 25...
Embodiment 2
[0027] Cultivation pool preparation: The depth of the cultivation pool is 1m, the slope is ?, there is a drain pipe at the bottom, after sterilization, water is injected, the water depth is greater than 60cm, the salinity of the pool water is adjusted at 4‰, the water temperature is 25°C, the pH value is 8.5, and oxygen The amount of water is 6mg / L, and the sterilized aquatic plants are placed in the pool 20 days in advance. The area covered by the aquatic plants is 75%, the height of the aquatic plants is 20cm, and the transparency of the pool water is 40cm;
[0028] Daily management of megalopa cultivation: transported 5-day-old megalopa, before entering the pond, first immerse the transport net cage in the cultivation pond for 5 minutes, and then put the megalopa into the cultivation pond, and the megalopa cultivation density is 20g / m3, without changing the water in the first 2 days after entering the pond, and feeding once every two hours, the total amount of food put in e...
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