罗非鱼不耐低温,秋末冬初,当水温降至15℃时,就不能继续生长。实际上罗非鱼养殖池只能利用半年(5～10月)。鳜鱼则不同,到了冬季并不完全停食,仍能持续生长,只是摄食减少,生长速度减慢。利用罗非鱼养殖池空闲期养鳜鱼,此阶段苗种便宜,饲料鱼丰富,鳜鱼养至翌年5月份上市,价格相对较高。盐都县义丰镇通过多年的生产实践,探索出利用罗非鱼池轮养鳜鱼的实用技术,有效地提高了池塘产出率,每0.067公顷(亩)效益比 Tilapia not cold, early autumn and winter, when the water temperature dropped to 15 ℃, they can not continue to grow. In fact tilapia ponds can only use six months (May to October). Catfish are different, to the winter does not completely stop eating, can continue to grow, but reduce food intake, growth slowed. The use of tilapia aquaculture pond idle nauplii, cheap seeds during this stage, rich in feed fish, catfish raised to the following May listing, the price is relatively high. Yifu County, Yandu County, through years of production practice, explored the use of tilapia pond rearing pomfret practical techniques to effectively improve the pond yield, 0.067 hectares (acres) benefit ratio