METHOD FOR RAISING CONTENT OF DISSOLVED OXYGEN IN WATER OF FISH PONDS

摘要

A method for increasing the content of dissolved oxygen in water of fish ponds includes potassium permanganate along the water level. Potassium permanganate is applied in an equivalent of 0.5-1.0 mg/l together with nitrogen-phosphorous fertilizers while bringing the nitrogen up to 2.0 mg/l and phosphorus up to 0.5 mg/l with the multipleness of application in each three days in the course of a decade at a water temperature of 18.8 °C - 27 °C.