Key points of stocking techniques for Fish fingerling in Pond in Winter

(agricultural Wealth net) at present, adult fish culture is about to enter the stage of catching and releasing fish in winter. As the saying goes, "put the fish in the pond", it can be seen that the mastery of the technology of releasing fish in winter is closely related to the output and economic benefits of pond culture. The author believes that the following key points should be paid attention to in order to do a good job of releasing fish species in pond in winter. First, stocking time. The winter release of fish species should be completed after the Winter Solstice and before the Beginning of Spring, because at this time the air temperature is low, the water temperature is also low, the activity ability of fish species is poor, and the casualties caused to fish species in the process of net-pulling, selection and transportation are the lowest. When stocking, it is best to choose sunny days, but it is not suitable to breed fish in bad weather such as rain, snow, wind and freezing, so as to prevent damage to fish and affect the survival rate and normal growth of fish species after entering the pond. Second, disinfection and disease prevention. The pond is cleaned and disinfected once a year. We should make use of the winter leisure season to clean up and disinfect. Before releasing fish species, the pond must be cleaned and thoroughly disinfected, remove too deep silt and sundries, heighten and strengthen the pond dam, maintain the drainage system, and use quicklime to improve the safe habitat of farmed fish. Before the fish goes into the pond, salt water and potassium permanganate solution should be used to clean the fish, which can reduce the death of fish and the occurrence of fish disease in the coming year. Third, stocking structure. According to the market demand, combined with the main culture conditions such as fish species, feed and facilities in the local fish farm, draw up the stocking methods of all kinds of farmed fish, avoid whatever they have and release them at will, or unilaterally increase the stocking quantity in order to pursue the yield. Reasonable mixed and close culture should be carried out in accordance with the method of scientific fish culture, low-age and large-size fish species should be selected, high-quality fish should be added, and new species should be cultivated in order to have more edible fish species, large specifications, good prices, increased production and high benefits, which can provide the maximum fish yield, the best technical indicators, and the best economic benefits. Fourth, production layout. To implement the management policy of farmed fish species serving adult fish and adult fish production serving the market, it is necessary to have marketable species and various suitable cultivation specifications, so as to improve the production capacity of fishing rotation and release, and to achieve early listing and balanced listing. For this reason, the pond area for the production of fish species and adult fish should be planned in the production layout, so that the matching production of fish species and adult fish can be achieved. Fifth, stocking management. Before the fish species are released in winter, apply enough basic fertilizer to release wax water in winter, put fertilizer water into the pond, control it as soon as it is released, and prevent freezing in winter, pay attention to maintaining the water level of the pond, and conscientiously do a good job in recording the pond culture log, so as to analyze and compare. Adjust the measures to increase production and summarize the experiences and lessons in culture.