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鱼饲料的计划安排,要根据成鱼的计划产量和各种鱼类的计划增重量以及饲料系数。饲料系数即是生产1公斤鱼所需要的饲料总重量。实践证明:一般增重1公斤草鱼,需陆草40公斤或水草80～100公斤;鲢、鲭鱼增重,每公斤鱼需鲜牛粪40～50公斤或人畜粪50公斤或化肥1.2公斤(尿素0.4公斤,过磷酸钙0.8公斤)。 青鱼、草鱼、鲤鱼等底层鱼,每增重1公斤,所排泄的粪便等肥水,可使鲢、鳙鱼、白鲫等鱼增长0.5公斤左右,另外池塘本身也有一定肥力。所以在生产上实行多品种混养的池塘中,鲢、
Fish feed plan, according to planted fish production and plan of various fish weight gain and feed factors. The feed factor is the total feed weight required to produce 1 kg of fish. Practice has proved that the general weight gain of 1 kg of grass carp, 40 grams of mustard or aquatic plants 80 to 100 kg; silver carp, mackerel weight gain per cow fresh fish manure 40 to 50 kg or manure 50 kg or fertilizer 1.2 kg 0.4 kg urea, 0.8 kg superphosphate). Grass carp, grass carp, carp and other bottom fish, each additional weight of 1 kg of excreted manure and other fertilizer can make silver carp, bighead carp, white carp and other fish increased by about 0.5 kg, while the pond itself has some fertility. So in the production of multi-species polyculture ponds, silver carp,