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在鱼苗培育过程中,做好肥水下塘和精心投喂两项工作至关重要。现介绍一种豆浆与粪肥混合培育鱼苗方法,以供参考。 一、施足基肥。在清塘消毒后,鱼苗下塘前5—8天,必须施足基肥,以培育池塘中的轮虫,使鱼苗下塘后有充足可口的饵料,一般按每亩施经发酵的粪肥250—350kg。 二、制作豆浆。将黄豆用水浸泡到豆瓣之间的凹隙胀平,浸泡时间过长过短都会影响出浆率。水温18℃时,浸泡10—12小时;水温25℃—30℃时,浸泡6—7小时。磨浆时,水和黄豆一次均匀加入,不能磨成豆浆之后加水,否则会沉淀。2.5—3kg黄豆可磨成50kg豆浆。磨好的豆浆应及时投喂,否则会沉淀。 三、豆浆投喂。鱼苗下塘后5天内,主要以轮虫为食。下塘3小时就应泼洒豆浆。投喂时注意以下四点:(1)投喂方法:每天上午、中
In the process of fry breeding, it is very important to do well the two tasks of fertilizer and water ponds and careful feeding. Now introduce a method of soybean milk mixed with manure fodder for reference. A Shi Shi-based fertilizer. In the Qing Tong disinfection pond fry 5-8 days before the pond must be applied to the foot-based fertilizer to nurture the rotifers in the pond so that after the fish ponds under the pond has plenty of delicious food, generally applied per mu fermented manure 250- 350kg. Second, making soy milk. Soybean soaked in water to the gap between the watercress flattening, soaking too long will affect the pulp yield. When the water temperature is 18 ℃, soak for 10-12 hours; when the water temperature is 25 ℃ -30 ℃, soak for 6-7 hours. When refining, water and soybeans are added evenly, can not be ground into soy milk after adding water, otherwise it will precipitate. 2.5-3kg soybeans can be ground into 50kg soy milk. Grind good milk should be fed in time, otherwise it will precipitate. Third, milk fed. Within five days after the fry pond, mainly rotifers for food. Under the pond 3 hours should spill milk. Feeding pay attention to the following four points: (1) feeding method: every morning, in