论文部分内容阅读
冬季并塘后到翌年放夏花前,大部分鱼种池将有半年左右的空闲期,如果对其进行综合利用,可以提高鱼种池的利用率,从而提高养殖效益。 一、合理开展成鱼养殖 利用冬闲鱼种池可以养一季成鱼。由于养殖期限较短,温度较低,应采用以下技术:(1)提早放养:在鱼种并塘后即行放养,以充分利用生长期。放养量以最大水深2m左右计算,一般每亩放养125—150kg,其中鲢鱼占40％,鳙鱼占10％,鳊、草鱼占30％,鲤、青鱼占20％。要求放养大规格鱼种,一般鲢、鳙鱼250g以上,草鱼500g以上,鳊鱼100g以上,青
Most of the fish ponds will have an idle period of about six months after pond ponds are put in winter and ponds before the summer of next year. If they can be comprehensively used, they can improve the utilization rate of ponds and improve their breeding benefits. First, the rational development of adult fish farming Winter fish species ponds can use a quarter of adult fish. Due to the short duration of breeding, the temperature is low, the following techniques should be used: (1) early stocking: stocking and ponds after stocking to take full advantage of the growing season. Stocking to the maximum depth of about 2m calculation, the general stocking per acre 125-150kg, of which silver carp accounted for 40%, 10% catfish, catfish, grass carp accounted for 30% carp, herring accounted for 20%. Require stocking large size species, the general silver carp, bighead carp 250g above, grass carp more than 500g, catfish 100g above, green