论文部分内容阅读
罗非鱼是热带性鱼炎,对繁殖水温要求较高,一般在4月底或5月初,当室外水温稳定在18—20℃时,就可将越冬的罗非鱼亲鱼移入室外繁殖池进行产卵、孵化。在罗非鱼的苗种生产过程中,抓好亲鱼饲养和及时捞苗是关键。一、繁殖方法1.繁殖池的准备亲鱼繁殖池应选择阳光充足,注排水方便,池底平坦,环境安静的地方。面积一般1—2亩,水深1米左右,便于施肥,投饵,容易控制水质。亲鱼放养前10—15天,将塘水排干,
Tilapia is a tropical fish inflammation, breeding water temperature requirements are higher, usually in late April or early May, when the outdoor water temperature stable at 18-20 ℃, the overwintering tilapia broodstock can be moved to the outdoor breeding pool for production Eggs, hatch. In the production of tilapia seedlings, do a good job raising fish and timely fishing is the key to feeding. First, breeding methods 1. Breeding pool preparation Breeding pond broodstock should choose sunny, easy injection drainage, bottom flat, quiet environment. Area of 1-2 mu, water depth of about 1 m, easy to fertilize, feeding, easy to control water quality. Broodstock stocking 10-15 days before the water drained,