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一、注意选择鱼种。应以罗非鱼、鲤鱼为主,其次为滤食性鳙鱼、鲢鱼和杂食性的鲫鱼等。草鱼因喜爱清静的水体,故宜少放。 二、注意水质过肥。鱼塘最好有排灌系统,因为鸭类易造成水质过肥而使鱼容易患病或泛塘,故需定期注入清水。一般每隔8～20天注清水一次,保持水质透明度16～20厘米。若水源不足,应减少养鸭只数。 三、注意放养密度。适当调整鱼鸭的放养密度。每亩水面放养250～350只鸭、各类鱼种800～1000尾。最佳密度视水深浅、水源情况等而定。 四、注意鸭料投放。利用水
First, pay attention to choose fish species. Should be tilapia, carp-based, followed by filter-feeding catfish, silver carp and omnivorous carp and so on. Grass carp because of the love of quiet water, it should be placed less. Second, pay attention to water quality is too fat. Fish ponds have the best irrigation and drainage system, because ducks can easily cause excessive water quality and make the fish susceptible to Pan Tong, it is necessary to inject clean water regularly. Generally note every 8 to 20 days water once, to maintain water transparency of 16 to 20 cm. If insufficient water, should reduce the number of ducks. Third, pay attention to stocking density. Adjust the stocking density of fish and ducks properly. Stocking 250 ~ 350 ducks per mu of water, all kinds of fish 800 ~ 1000. Depending on the optimal density of water depth, water conditions may be. Fourth, pay attention to duck feed. Use water