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化肥养鱼具有运输方便,施用简单,养分含量高,不含有机质,不消耗水中氧气,不污染水体,见效快,效益高等优点。一般情况下,施尿素1公斤,可长成鱼1.5公斤;施硫酸铵1公斤,可长成鱼0.5—0.6公斤、0.7公斤;施磷酸铵1公斤,可长成鱼0.5公斤;施碳酸氢铵1公斤,可长成鱼0.5～0.6公斤;施氨水1公斤,可长成鱼0.1公斤。 施放氮素化肥养鱼时有下列问题应当注意: 1、氮素化肥虽然含氮量高,但成分单一,属不完全肥料,必须混施磷、钾肥,混施比例为2:2:1。淤泥较多的池塘,可不施钾肥。 2、施用氮素化肥前,最好先施有机肥料作基
Fertilizer fish with easy transportation, simple application, high nutrient content, non-organic matter, do not consume oxygen in water, do not pollute the water, quick, high efficiency advantages. Under normal circumstances, urea 1 kg, can grow into fish 1.5 kg; ammonium sulfate 1 kg, can grow into fish 0.5-0.6 kg, 0.7 kg; ammonium phosphate 1 kg, can grow into fish 0.5 kg; Ammonium 1 kg, can grow into fish 0.5 ~ 0.6 kg; ammonia ammonia 1 kg, can grow into a fish 0.1 kg. The following problems should be noticed when applying nitrogenous fertilizer for fish farming: 1. Although nitrogenous fertilizer has high nitrogen content but single composition, which is an incomplete fertilizer, it is necessary to mix phosphorus and potash fertilizer in a ratio of 2: 2: 1. Sludge ponds, potassium can not be applied. 2, before the application of nitrogen fertilizer, it is best to first apply organic fertilizer as a base