王以尧 ，罗国强， 张哲勇， 李晓庆， 陈 兵， 余 波， 李春娟
（成都通威水产科技公司，成都 610081）

摘 要：研究在相同投喂量下，不同投喂频率（3、6、8次/d次/日）对循环水养殖系统水体氨氮水平及生物滤器其去除效率的影响。结果表明，随着投喂频率增高，：养殖水体氨氮变异程度系数由14.9%逐渐减弱到0，但总体平均浓度基本保持一致 稳定（P>0.05）；投喂后，生物滤器氨氮去除效率由67.02%持续 升高到85.71%，变化具有显著差异性（P<0.05）。研究发现，采用8次/d次/日投喂频率时，养殖水体氨氮浓度保持更平稳稳定、生物滤器氨氮去除效率更高。

关键词：循环水养殖系统；投喂频率；氨氮

Effect of Feeding Frequency on the NH4-N+ Level of
the recirculating aquaculture system

WANG Yi-yao, LUO Guo-qiang, ZHANG Zhe-yong, LI Xiao-qing, CHEN Bing, YU Bo, LI Chun-juan
(Tongwei aquatic scientific and technology, Co,ltd, Chengdu 610081,China)

Abstract:： Under the condition of the same feeding weight, the experiment was carried on the feeding frequency of 3 times per day, 6 times per day and 8 times per day to the NH4-N+ level and biofilter’s removing ratio. The result shows, with the increase of feeding frequency, although the coefficient of variation decreased from 14.9% to 0 ,the general average of NH4-N+ level in the culture water almost kept still. With the increase of feeding frequency, the NH4-N+ removing ratio of biofilter increased significantly from 67.02% to 85.71% after feeding. Above all, 8 times per day feeding frequency makes the NH4-N+ level of recirculating aquaculture water keep stiller, and NH4-N+ removing ratio of biofilter grows higher.

Keywords: Recirculating Aquaculture System, Feeding frequency, NH4-N+

作者简介：王以尧（1981-），男，硕士，研究方向：设施渔业。Email:wyy1042@yahoo.com.cn
 

(来源：《渔业现代化》2011.38(1)：7-11)