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网箱容积小,放养密度高,如何放好鱼种是提高网箱鱼种成活率和夺取高产的关键。冬至到立春是我省网箱冬放鱼种的最佳时期,各地应严把放养关,做到鱼种“五不”下箱。一是体质不健壮不下箱。网箱要放养规格大体质壮的鱼种。体质疲弱,有伤病的不下箱。二是鱼种不锻炼不下箱。鱼种放养前要进行拉网和网箱锻炼,如采用“两网一囤箱”(即拉两次网,囤一夜箱),可减少运输途中的伤亡,提高鱼种运输成活率,并使鱼种适应密集环境,减少鱼种入箱初期的机械损伤。
Small cage size, stocking density, how to put fish species is to improve the survival rate of cage fish species and capture the key to high yield. Winter solstice to the beginning of spring is the best time to fish in winter in our province cages, all over the stocking should be strictly closed, so that fish species “five noes” under the box. One is not strong physique box. Cages should be stocked with specifications of strong and strong species of fish. Physical weakness, there is no less than box injury. Second, fish species do not exercise less than the box. Fish stocking should be carried out before pulling net and cage exercise, such as the use of “two nets a store box” (that is, pull the net twice, store a night box), can reduce the transport of casualties and improve the survival rate of fish species, and to Fish species to adapt to the intensive environment, reduce the initial mechanical damage fish into the box.