Fertilizer fish farming is an effective method to reduce the cost of feed for fish farming. The commonly used chemical fertilizers include urea, ammonium bicarbonate, superphosphate, and compound fertilizers. When using it, you should master the principle of a small number of times, apply it every 3 to 5 days, and apply 2-3 kg of urea or 5 to 10 kg of ammonium bicarbonate in each mu. The application of chemical fertilizers can rapidly increase the amount of plankton in ponds, and has a better effect on earthworms and catfishes.
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