罗非鱼不耐低温,秋末冬初,当水温降至15℃时,需及时干池起捕上市,这样罗非鱼养殖池实际只利用半年(5～10月)。鳜鱼冬季并不完全停食,仍继续生长,只是摄食减少,生长速度减缓。利用罗非鱼养殖池空闲期养鳜鱼,此阶段苗种便宜,饵料鱼丰富,鳜鱼养至翌年5月份上市,价格相对较高。我镇通过多年实践,探索出利用罗非鱼池轮养鳜鱼的技术,有效地提高了池塘产出率和养殖效益;全年平均每667m~2获纯利4000～5000元。具体技术如下。 1.鳜鱼种放养。罗非鱼养至8月初平均规格可达400g左右。此时,可以据市场行情陆续 Tilapia is not resistant to low temperature, late autumn and early winter, when the water temperature dropped to 15 ℃, timely dry pond catch market, so tilapia pond actually use only six months (May to October). Catfish in winter is not completely stop eating, still continue to grow, but reduce food intake, growth rate slowed. The use of tilapia breeding pond idle nauplii, cheap seed stage, bait fish rich, catfish raised to the following May listing, the price is relatively high. Through years of practice in our town, we have explored the use of tilapia pond tilapia technology, effectively raising the pond yield and breeding benefits; the annual average of every 667m ~ 2 net profit of 4000 to 5000 yuan. Specific techniques are as follows. 1. Catfish stocking. Tilapia raised to early August average specifications up to 400g or so. At this point, according to market conditions one after another