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Adult fish ponds "six attentions"
Many farmers have the habit of using fish ponds in adult fish ponds. Indeed, under the condition of not affecting the adult fish production, large-scale high-quality fish species can be provided for the adult fish production in the next year through nesting of summer fish fry. On the one hand, it can save some funds and reduce the cost of breeding; on the other hand, it can avoid fisheries casualties caused by fishing or transportation, or affect the production due to the lack of a suitable fish species. It is indeed a good method to kill birds with one stone. However, if you really want to do a good job of raising fish ponds, you must pay attention to the following issues. First, when the adult fish species are stocked, they have to leave room for the next step to raise the fish. The use of adult fish ponds to raise summer flowers, etc., adult fish stocking attention can not reach the limit, to leave room for the next set of raising work, otherwise it will affect the growth of nestling fry, or because the pond contains a large amount of fish Dangerous. Second, set a summer fish seedlings early. In order for fish cultured in adult ponds to meet the required specifications, they must be put in as soon as possible, generally at the beginning of July. This fish into the pond early, long growth period, bred large specifications. Third, accurately determine the stocking of fish fry. The size of the out-of-stock fish ponds has a certain relationship with stocking time, fry quality, and feeding management, but has a greater relationship with stocking density. It can be said that under the condition of stocking time and the specification of the fry, the size of the breeding scale depends on the stocking density. Therefore, reasonable stocking densities should be determined based on technical conditions and management levels. Fourth, strengthen feeding and management. In fish ponds, nesting cultures are provided. Individuals have large or small ponds. Therefore, attention should be paid to the feeding and management of adult fish and fry. Adhere to the "time, positioning, qualitative, quantitative" principle of feeding, according to the weather, fish feeding activities and other flexible grasping the amount of feeding, see the water fertilization culture of fish natural food palatability, but also pay attention to tour ponds, water quality management, disease prevention and so on. Fifth, pay attention to the mix of varieties. In summer ponds, nest summer flowers, etc., and the same or similar diet fry can not be stocked in the same pool. Set the ratio of oysters and squid to 4-5:1, and it is best to keep or put less fry in carp ponds. The structure and quantity of stocked fry can not be completely copied in accordance with the structure and quantity required for adult fish breeding. Sixth, the fish will be caught out of the pond in time. In fish ponds, the amount of fish on ponds gradually increases with the passage of time, and sudden changes in the weather during the hot season tend to occur. After August, adult fish have reached commercial specifications one after another. In this way, the adult fish should be caught and marketed in a timely manner. On the one hand, the contradiction between large amounts of fish on the pond can be alleviated to avoid accidents; on the other hand, time and space can be gained for the growth of fry. Improve the quality of fingerlings.