Timely: Generally, during the period from May to October, when the water temperature is 17 to 18 degrees Celsius, the best temperature is 22 to 26 degrees Celsius. Which in August or when the temperature is too high should not be applied fertilizer. Sprinkle application of fertilizer should be selected in the sunny morning.
Appropriate amount: intensive culture pond with water depth of about 1 meter, applying urea 1.5~2 kg per mu, phosphate fertilizer 2.5~3 kg, nitrogen, phosphorus ratio 1:1~2. Single application of nitrogen fertilizer or phosphate fertilizer is not satisfactory. For ponds or reservoirs with a water depth of 2 meters or more, the amount per mu should be increased appropriately.
Sequencing: The fertilization proceeds in sequence. First dissolve the phosphate fertilizer with water, then dissolve the nitrogen fertilizer in the phosphate fertilizer. After the fertilizer is fully dissolved, it can be poured into the water body. Never throw fertilizer dry powder directly into fish ponds.
Appropriate points: The well-developed fishponds should be distributed with evenly sprinkled fertilizer and water points, while general ponds or reservoirs should be selected for fertilization at the upper and upper heads of the water body. In addition, bogey water bogey fertilizer. Because drowning water is easy to lose fertilizer.
Appropriate: Fertilizer is a quick-acting fertilizer. When fertilizing, it should be applied as little as possible. It is best to apply it every 4 to 6 days.
Appropriate management: After the chemical fertilizer is applied to the pond, the color change and the fish activity of the pool water are observed at any time. If there is any abnormality, proper measures such as removing fertilizer and raising water level should be promptly handled.
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