1. cultivation preparation: disinfect with 75 ~ 100 kg of quicklime per mu. When the water depth of the pond is 10cm, clean the pond by dry method to kill pathogens, wild fish and enemies in the pond. 5 ~ 7 days before stocking fish, 200 ~ 300 kilograms of organic fertilizer such as fermented and decomposed pig manure and duck manure should be applied at the water depth of per mu 1m to enrich the water quality of the pond and cultivate palatable biological bait, which is beneficial to the rapid growth of fish.
2. Selection of fish species: The released fish species must be healthy, neat in specifications and free from diseases and injuries. 654.38+00,000 ~ 654.38+05,000 fish can be cultivated per mu, and a proper amount of silver carp and bighead carp can be cultivated (the ratio is 3: 65,438+0). Soak fry in 3% salt solution for 5 ~ 10 minutes before they go to the pond to kill pathogens that may be carried by fry. After disinfection, the fish species choose to go down to the pond in the windward.
3. Water quality control: After fish enter the pond, add 1 time every 7 ~ 10 days, and add 10 ~ 20 cm of water each time. Because lotus carp is suitable for growth in slightly alkaline pond water, lime water 1 time should be sprinkled every 15 days, and quicklime 15 ~ 20kg should be used per mu of water surface and water depth1m. It is not suitable to use quicklime to adjust the water quality in ponds with alkaline water quality. Pond water should be moderately plump with a transparency of 25 ~ 30cm to ensure that the water quality is plump, lively and cool.
4. Bait feeding: According to the different growth stages of the lotus carp, it is necessary to feed a palatable full-price compound pellet feed with a crude protein content of 28% ~ 32%. At the initial stage of feeding, feed pellets with crude protein content of 32%, which is convenient for fixed-point domestication. In the middle and late stage of feeding, feed pellet feed with crude protein content of 28%, and feed at regular time, fixed point, quality and quantity. Feed twice a day and three times a day in hot season, and the distribution ratio of feeding limit is 3∶4∶3. Because the lotus carp is greedy, as long as the feed is palatable, the food intake will be greatly increased, and the daily feeding amount should be controlled at 4% ~ 8% of the total weight of the fish, and it is appropriate to be 80% full. Appropriate amount of vitamins can be added to the compound feed to promote the growth of lotus carp.