1. carp culture technology (1) pond construction: the standard of carp culture pond is relatively high, and the fish pond must be built in a place with good environment, rich water resources and no urban area. If you don't want to rebuild the fish pond, you can also rebuild the abandoned pond. (2) Selection of carp fry: carp fry must be selected with symmetrical size, no pests and diseases and strong swinging ability. If the purchased carp fry are transported, oxygen should be added to the fry during transportation, which is beneficial to reduce the chance of fry damage. (3) Relative culture density: 3000 Jin carp can be cultured in a common pond 1 mu, or mixed with 300 Jin freshwater carp. When breeding, the density must not be too high, otherwise carp will easily produce pests and diseases and increase the breeding cost. (4) Designated feeding: fry need not be fed after being put in the pond for about 10, because plankton in the pond can ensure their food intake. After a period of time, feed them with concentrated feed and let them domesticate. 2. Management method of fish pond (1) Middle and late management method: Observe the growth and development of carp. If the carp has a bad appetite, then you must eat less every time and adjust the secret recipe of concentrated feed appropriately. If the appetite of carp still does not improve, it must be treated with drugs. (2) Solving the problem of overwintering: it is inconvenient for carp to overwinter. If the pool surface freezes in winter, the oxygen releasing ice eye must be pulled out with a small tool. If it overwinters in rainy days, it can be cleaned at the location of the reservoir management center to let carp overwinter normally.