摘要
以过硫酸氢钾、沸石粉和膨润土为主要成分,分别添加0%(对照)、0.5%、1%、2%、4%和8%的过碳酰胺配成6种底质改良剂,分别标记为A、B、C、D、E和F,本实验研究了以上6种不同组分的底质改良剂对刺参生长和底质环境的影响。实验过程中,分别于第0、7、14、28、42和56天测定底泥氧化还原电位和营养盐变化,实验结束后测定刺参特定生长率。结果表明:E组底泥氧化还原电位最高,但与F组间无显著差异(P>0.05);底泥中NO_3--N含量同样在E组达到最大值,且与F组间差异不显著(P>0.05);底泥NH_(4+)-N、NO_2--N、和TN含量均在D组达到最小值,但与E组和F组间无显著差异(P>0.05);D组刺参特定生长率最高,但与E组和F组间无显著差异(P>0.05)。综上所述,底质改良剂中添加过碳酰胺能够显著改善底质环境,以特定生长率为评价指标,当添加量为4.8%时最利于刺参的生长。
A 56-day experiment was conducted to examine the effects of different sediment ameliorants on the growth of sea cucumber Apostichopus japonicus and benthic environment.Six types of sediment ameliorants with the ingredients of potassium hydrogen persulfate,zeolite powder and various concen- trations of urea hydrogen peroxide,i.e.0%(A),0.5%(B),1%(C),2%(D),4%(E)and 8% (F),were prepared for A.japonicus culture.After the feeding trial,the sediment of group E showed the highest Eh value,which was not significantly higher than that of group F (P>0.05).Sediment of group E showed the highest nitrate nitrogen content,which was not significantly higher than that of group F (P>0.05).The lowest contents of ammonium,nitrite nitrogen and total nitrogen were observed in the sediment of group D,which were not significantly lower than those of groups E and F (P>0.05).Sea cucumber in group D showed the highest specific growth rate but was not significantly higher than those in groups E and F (P<0.05).In summary,adding urea hydrogen peroxide to sediment ameliorant can significantly improve the sediment environment as was analyzed on the basis of SGR and through the second-order regression^the optimum addition content of urea hydrogen peroxide was estimated to be 4.8%.
作者
崔君
高勤峰
董双林
CUI Jun;GAO Qinfeng;DONG Shuanglin(Key Laboratory of Mariculture of Ministry of Education,Ocean University of China, Qingdao 266003,Chinas;Function Laboratory 0f or Marine Fisheries Science and Food Production Processes,Qingdao National Laboratory {or Marine Science and Technology, Qingdao 266235,China)
出处
《海洋湖沼通报》
CSCD
北大核心
2018年第4期133-139,共7页
Transactions of Oceanology and Limnology
基金
国家自然科学基金(31672657,31372549)资助.
