Key points for pond culture of large yellow croaker
Pond culture of large yellow croaker is cheaper and easier to manage than cage culture, and the body color of large yellow croaker bred in ponds is closer to natural large yellow croaker. There are several key points in developing pond culture of large yellow croaker.
(1) The pond requires convenient drainage and drainage. It is best to change the water every day; the pond area is suitable for 15 to 30 mu, and the depth of the pond is 2.0 to 3.0 meters.
(2) The proportion of pool water is between 1.010 and 1.025, the transparency is above 0.5 meters, the water temperature is between 8°C and 28°C, the dissolved oxygen is required above 5ml/l, and the PH requirement is between 8.0 and 8 Between .5.
(3) Before the stocking of fish, stocking should be conducted for 1 month before inundation, 10 to 15 centimeters of influent, and a total of 150 kilograms of lime per acre in Quanchipi to improve the sediment quality and drain the fish once it is stocked.
(4) Stocking large-sized fingerlings can reach the commodity fish size in the current year. Generally choose 60-90 grams / tail fish species, if conditions, stocking more than 100 grams of fish is better; stocking density should be controlled at 400-700 per mu. Restocking time is appropriate after mid-to-late April. The fish species are kept in captivity in ponds for 2 to 3 weeks before stocking, and then stocked again.
(5) The daily management includes feeding, water quality control, patrol pond and disease, and enemy damage control.
The daily feeding amount decreased from 10% of fish body weight to 7%. During the high temperature period, the amount of feed is strictly controlled.
2 water quality control, as far as possible to change the water every day, change the water control in the 20% to 50%; high temperature period can consider changing the water twice a day, change the water time should be placed at night and morning.
(1) The pond requires convenient drainage and drainage. It is best to change the water every day; the pond area is suitable for 15 to 30 mu, and the depth of the pond is 2.0 to 3.0 meters.
(2) The proportion of pool water is between 1.010 and 1.025, the transparency is above 0.5 meters, the water temperature is between 8°C and 28°C, the dissolved oxygen is required above 5ml/l, and the PH requirement is between 8.0 and 8 Between .5.
(3) Before the stocking of fish, stocking should be conducted for 1 month before inundation, 10 to 15 centimeters of influent, and a total of 150 kilograms of lime per acre in Quanchipi to improve the sediment quality and drain the fish once it is stocked.
(4) Stocking large-sized fingerlings can reach the commodity fish size in the current year. Generally choose 60-90 grams / tail fish species, if conditions, stocking more than 100 grams of fish is better; stocking density should be controlled at 400-700 per mu. Restocking time is appropriate after mid-to-late April. The fish species are kept in captivity in ponds for 2 to 3 weeks before stocking, and then stocked again.
(5) The daily management includes feeding, water quality control, patrol pond and disease, and enemy damage control.
The daily feeding amount decreased from 10% of fish body weight to 7%. During the high temperature period, the amount of feed is strictly controlled.
2 water quality control, as far as possible to change the water every day, change the water control in the 20% to 50%; high temperature period can consider changing the water twice a day, change the water time should be placed at night and morning.
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