(Correct culture method of crucian carp):
(pond selection) 1. Carassius auratus culture pond should choose a pond with fresh air, no pollution, sufficient water, convenient transportation and convenient irrigation and drainage. Such plots are more suitable for crucian carp farms, and many items such as oxygen changing machinery, water pumps, fishing nets and nylon nets should be prepared to facilitate future construction.
(pond construction) 2. After selecting the plot, dig a deep pit with a depth of 1.5m to 2 m by machine, and then disinfect it with lime. Disinfection and airing time is about 1 ~ 2 days, and then irrigation is carried out with water pump. During irrigation, the pump should be wrapped with nylon net, which can not only prevent impurities from blocking the pump, but also play a filtering role. After the pond is full, it will be observed for 5 to 7 days.
(set around the pond) 3. After checking that the inside of the pond is in good condition, check the dams around the pond. If a mouse hole is found, it should be blocked with soil in time. Besides, you should install mousetraps on the dam in various ways. Remember not to covet the convenience of using rat poison, otherwise the mouse will not know where to go after death. If they die in the pond, it will do harm to crucian carp. A net wall of about 50 cm should be built around the pond to isolate the harm caused by poultry. Everything is ready.
(selecting seedlings) 4. When buying fry, you should go to a large-scale farm to buy them. The fry should have similar body length, no obvious scars, complete scales, no diseased fins and good swimming and foraging ability. This kind of fry is suitable for purchase. The number of fry should be reasonably selected according to the size of the culture pond. Normal use can breed adult fish 15 to 20 per square meter. The fry selection is like this.
(transportation management) 5. After the purchase is completed, it should be transported in cages, and the transportation process should be stable to reduce the occurrence of collisions, which can greatly improve the survival probability of fry, and the fry should be raised adaptively after the transportation is completed.
(temporary fry) 6. The transported fry should be kept in cages temporarily, which is also called adaptive culture. A small number of fry can be temporarily raised in cages filled with pond water, and some aquatic larvae can be fed for a short time. After the fry live safely in the pond water, they can be stocked in large quantities, and the temporary rearing time can be controlled within 3 to 5 days.
(fry domestication) 7. After the stocking of crucian carp, it needs to be domesticated. It is necessary to feed the crucian carp in every corner of the pond at the initial stage of domestication, and then gradually narrow the feeding range after the crucian carp adapts to the feed, which is very helpful for future management.
(daily management) 8. The management of crucian carp pond should check whether the isolation net around the pond is damaged every day, and repair it in time if it is found to be damaged. The transparency of the pool water should be guaranteed to be 35cm to 40cm, and the water should be changed every 7 days to 10, with a depth of 30cm each time. If it is found that crucian carp always swims around on the surface of the water and spits with its mouth open, it means that the oxygen in the pond is insufficient, so it is necessary to increase the oxygen in time.
(Fishing for sale) 9. When the crucian carp grows to 1.5 kg to 2 kg, it can be caught and sold.