| 摘要 |
PURPOSE: To prevent algal bloom and red tide of water bodies by keeping nitrogen concentration in water bodies below 1mg/L. CONSTITUTION: Phosphorus sources and sulfur sources are poured into water bodies in eutrophication(nitrogen concentration is higher than 1mg/L and phosphorus concentration is less than 0.1mg/L) until the weight ratio of N : P : S in water bodies become 100 : 2-10 : 2.5. Herein, phosphorus source is selected from phosphate and phosphatic fertilizer, and sulfur sources is gypsum. Further, magnesium is added to water bodies in the amount of 0.5 parts by weight based on the 100 parts by weight of nitrogen. Furthermore, based on the 100 parts by weight of nitrogen, 14 parts by weight of calcium and 3 parts by weight of potassium can be added to water bodies.
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