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养鱼常用的化肥主要有氮肥、磷肥、钾肥、钙肥等几种。实践证明,化肥养鱼具有肥效快而高,操作简便,节约工时,污染程度轻,降低成本等优点。施用了化肥的池塘比没有施化肥的池塘,如白鲢,花鲢等鱼类,一般可提高40％左右的产量。一、施用化肥的方法化肥不含有机质,肥效持续时间短,一般应将化肥当作追肥使用,采用多次少量的方法和有机磷肥料混合交叉使
Commonly used fertilizers of fish are nitrogen, phosphate, potassium, calcium and other several. Practice has proved that fertilizer with fast and high fertilizer efficiency, easy operation, saving working hours, pollution, light, reduce costs and so on. Ponds that used chemical fertilizers generally increased yields by about 40% compared to those that did not fertilize, such as silver carp and silver carp. First, the method of fertilizer application Fertilizer does not contain organic matter, fertilizer duration is short, fertilizer should generally be used as top dressing, using a small number of methods and organic phosphorus fertilizer mixed cross