实践证明,二龄花白鲢镛鱼种绝对增重最快。养鱼生产者可以充分利用一龄鱼种池空闲时期,提早放养二龄鲢鳙鱼种,在淡季捕出上市,市场销售快,价格高,效益好。具体方法如下:1、二龄鲢鳙鱼种的选择。凡秋季出池,不够商品鱼规格的鲢、鳙鱼,可继续越冬,来年放养。2、池塘消毒。用生石? Practice has proved that the second age silver carp bighead carp absolute weight gain the fastest. Fish producers can make full use of the first instar fish ponds during the idle period, stocking the second-oldest silver carp and bighead carp prematurely, and catching fish in the off-season to be marketed, with quick market sales, high prices and good returns. Specific methods are as follows: 1, second-generation silver carp bighead carp species selection. Where the fall out of the pool, not enough fish size silver carp, bighead carp, can continue to wintering, coming year stocking. 2, pond disinfection. With stone?