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通过连续测定3个南美白对虾养殖池不同时间溶解氧的含量,对精养虾池溶解氧含量随昼夜和月份的变化规律进行了初步探讨。研究结果表明:精养虾池水体中溶解氧含量具有明显的昼夜和月份变化。昼夜变化日较差高达8.9mg/l,其中凌晨太阳出来以前溶解氧的含量降到最低值2.7mg/l,下午16:00左右达到最高值,为11.6mg/l;月份变化主要表现在7、8月份下午表层高峰值均值(分别为11.91mg/l和10.28mg/l)大大高于5、6月份均值(分别为6.39mg/l和8.19mg/l)。
Through the continuous determination of dissolved oxygen content in three ponds of P. vannamei at different times, the variation of dissolved oxygen content in the shrimp pond with the variation of diurnal and monthly was preliminarily discussed. The results show that: dissolved oxygen content in the shrimp pond water body has obvious diurnal and monthly changes. The diurnal variation day is as high as 8.9mg / l, in which the dissolved oxygen content before the sun comes out reaches the lowest value of 2.7mg / l in the early morning and reaches the highest value of about 11.6mg / l at about 16:00. The monthly variation mainly displays in 7 The mean peak values (11.91 mg / l and 10.28 mg / l respectively) in the afternoon of August were significantly higher than those of the 5 and 6 months (6.39 mg / l and 8.19 mg / l, respectively).