Raising the carp in the adult fish pond can make full use of the low-value wild fish in the fish pond to transform into a fish with high quality and high quality, which is a new and efficient mode of large-scale and industrialized breeding of carp. Influencing factors for the success or failure of adult fish cultured in fish ponds The level of fish pond production is a kind of high oxygen consumption carnivorous fish. The level of dissolved oxygen in the pond is the key to the success or failure of carp culture, and the higher the output of adult fish ponds in general. The greater the density of the fish, the lower the dissolved oxygen in the water, which is more detrimental to the growth of the carp. According to the test results, the yield per mu of fish is about 500 kg, the survival rate of carp is about 80%, the yield per mu of fish is about 600 kg, the survival rate of carp is about 50%, and the adult yield per mu is more than 650 kg. Squid. Therefore, the medium and low-yielding fish ponds should be selected for the rearing of catfish, and the main fish should be 400-500 kg per mu. Cultivation methods Fresh and turbid water in ponds have a direct impact on the predation of bonito fish. If the turbidity of the water body is large, it will affect the vision of the squid, causing difficulties in predation and affecting the growth and yield of the squid. Fish ponds that are mainly made up of fertilizers have a good effect on fish ponds that are not fed with commercial feeds. Therefore, a fish pond that is fed with commercial feed should be selected as far as possible. Adult fish ponds are the main technical points for nesting puffer fish ponds. The area of ​​adult fish ponds mainly for cultivating eating fish is 10 to 20 mus. The area of ​​ponds mainly for culturing filter-feeding fishes can be larger, and 20 to 40 mus are appropriate. The water depth is about 2 meters; there is less silt in the bottom of the pool; there is a perfect water inlet and drainage system; and conditional fish ponds are equipped with aerators. The pond clearing is strictly performed according to the conventional requirements. The number of stocks of carp fry stocked by carp fry should be determined by the number and size of natural wild fish in the pond. Usually put more than 5 cm per acre 40 to 50 tail carp seedlings; stocking time is late in May, the latest not later than the beginning of June; carp seedlings before the lower pond with 3% to 5% salt water or potassium permanganate solution and other leaching Wash and sterilize. Feed Source Adult fish ponds often have a certain amount of wild fish, shrimp, or fish and shrimp eggs entering the pool when they enter or drain water and feed water plants, such as oysters, head fish, and larvae of larvae in the pool. The use of these low-value trash fish and shrimps to transform them into high-quality, high-value commercial fish. During the cultivation process, a certain number of summer fish species should also be regularly or irregularly added according to the situation of the feed fish in the pool to meet the needs of the carp. Regulation of water quality The squid has poor resistance to hypoxia and should keep the water in the pool fresh and have sufficient dissolved oxygen. Water can be added according to water quality, weather changes, etc. Generally, water is added once every half month or so, each time water is added 20 to 30 centimeters, and water is added once a week in the high-temperature season from July to September. At the same time, lime slurry is poured every month. 1 time. When the weather was hot, it was found that the squid had floating heads or spit out feed fish. Turn on the aerator or fill the pond with new water in time to prevent the squid from dying due to lack of oxygen.