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(一)适时注入新水 加注新水能给鱼池带进较多的氧气和老水中缺乏的某些营养元素,冲淡水中耗氧的有机质以及一些有毒的代谢物。尤其是夏秋季节,养殖池塘5～7天必须加注新水1次。
(A) timely injection of new water Filling new water can bring more oxygen to the pond and some of the nutrients lacking in the old water, dilute the oxygen-consuming organic matter in the water and some toxic metabolites. Especially in summer and autumn, breeding ponds 5 to 7 days must be filled with fresh water 1 times.