池塘双季主养雄性罗非鱼试验

在２口面积１亩的池塘中开展双季主养雄性罗非鱼试验，采取沙管井取水升温，放养较大规格鱼种，投喂优质饵料，强化水质管理，连续充氧等技术措施，获总产７５１７ｋｇ，其中罗非鱼６５７１ｋｇ，总产值９７９６４元，平均亩利税１３４７１．５元。试验一池双季主养雄性罗非鱼经济效益显著，完全可行。

Study on the Double Stocking Experiment with Male Tilapia as the Major Culturing Species

In two ponds whose area were one mu respectively, the experiment had been carried out. Sand tube well water was used to increase the water temperature, large-sized fingerlings were stocked, suitable diets was fed with water quality was strictly managed, high concentration of oxygen was asured. In this case, the gross yield of the two double stocked pond was 7517kg, of which the yield of the Tilapia was 6 571 kg,the gross productive value was 97 964 yuan,the average profit was 13471.5 yuan per mu. The study proved that,chose male Tilapia as the major species, double stocked in one pond in North China was practical and it can make high profit.