浮床水蕹菜对养殖水体中营养物的去除效果研究李文祥

31820118ActaScientiaeCircumstantiaeVol．31No．8Aug．2011No．2006AA203A01No．NYCYTX-49-15SupportedbytheTechnologyProjectofHubeiProvinceNo．2006AA203A01andtheEarmarkedFundforModernAgro-industryTechnologyResearchSystemNo．NYCYTX-49-151973—[e-mail]*[e-mail]1973—[e-mail]*[e-mail]maquaculturewastewaterbytheaquaticvegetableIpomoeaaquaticaonfloatingbedsJ．ActaScientiaeCircumstantiae3181670-167511212311*1．4300722．1000393．4332002010-10-262010-11-252010-12-06200761162000m2．3200m2Ipomoeaaquatica3．1467kg1203kgp＜0．05．TN25．17%TP15.27%TN30．02%TP21．68%4000±350kgTN8．41%TP4．85%．TN、TP、CODChla5mg·L－1．．0253-2468201108-1670-06X703．1AInsitunutrientremovalfromaquaculturewastewaterbytheaquaticvegetableIpomoeaaquaticaonfloatingbedsLIWenxiang1LIWei12LINMingli12WANGYingxiong3LIUJiashou1LIZhongjie1*1．InstituteofHydrobiologyChineseAcademyofSciencesWuhan4300722．GraduateSchooloftheChineseAcademyofSciencesBeijing1000393．HonghuFisheryTechnicalExtensionStationHonghu433200Received26October2010receivedinrevisedform25November2010accepted6December2010AbstractToinvestigatethenutrientremovalinanaquaponicsystempilotscaletestswerecarriedoutinsixearthenpondsofarea2000m2fromJunetoNovemberin2007．TheaquaticvegetableIpomoeaaquatica200m2areawasplantedonfloatingbedsinthreeponds．Theotherthreepondswithoutthevegetablewereconsideredcontrols．Thesamefishweightwasstockedintheplantedandcontrolpondsbutwithdifferentfishspecies．Attheendofexperimentthefishproductioninplantedponds1467kgwassignificantlyhigherthanincontrolponds1203kgp＜0．05．PercentageremovaloftotalnitrogenTNandtotalphosphorusTPbyharvestedfishinthecontrolpondswas25．17%and15．27%respectively．PercentageremovalofTNandTPbyharvestedfishintheplantedpondswas30．02%and21．68%respectively．Thefreshweightofharvestedvegetablewas4000±350kgandthepercentageremovalofTNandTPwas8．41%and4．85%respectively．InthemiddleandlateperiodoftheexperimentthecontentsofchemicaloxygendemandCODandchlorophyllaChlaintheplantedpondsweresignificantlylowerthaninthecontrolpondsandthetransparencywassignificantlyhigherthaninthecontrolponds．TheconcentrationofdissolvedoxygenDOinplantedpondswashigherthan5mg·L－1duringtheexperimentwhereastheconcentrationofDOinthecontrolpondsdecreasedsharplyinthelastmonth．Theresultssuggestedthatthewaterqualitycouldbeimprovedeffectivelyandahigherfishdensitycouldbestockedintheaquaponicsystem．KeywordsfloatingbedsIpomoeaaquaticaquaculturewastewaternutrientremovalDOI:10.13671/j.hjkxxb.2011.08.02081IntroductionCarpenteretal．1998Ruenglertpanyakuletal．200420%～50%15%～65%Schneideretal．2005VanRijn1996．、．Siddiqui2003Troelletal．2005Linetal．2002Nayloretal．2003Schulzetal．2003Aquaponicsystem1997Diver2006Lietal．2009．Ipomoeaaquatica19961999Sooknahetal．2004．．2Materialsandmethods2．1、2000m232m633．CarassiusauratusIctaluruspunctatusSinipercachuatsiHypophthalmichthysmolitrix1．5m×40m2cm．1．5m40cm×40cm×．200761112%～5%．．“”51h．2．21YSI550ApHHANNAHI98127．24hGF/CaChlaTAN、NO－3-N、NO－2-NTP、TNCODClescerietal．1998．、TPTN1999．2．3TN、TPTN、TP、、TN、TP．Student'st-test．3Results3．111467kg1203kg100kg．p＜0.05．1761311、Table1Stockedandharvestedindividualsandweightoffishandvegetableinplantedandcontrolponds//kg/kg//kg/kgSinipercachuatsi2000．573±8Carassiusauratus4000200710±254000200870±32Ictaluruspunctatus64040250±14Hypophthalmichthysmolitrix6000060434±54500100332±23Ipomoeaaquatica104000±3503．2TN、TP、TN、TPTN25．17%TP15．27%TN30．02%TP21.68%．4000±350kgTN8．41%TP4．85%2．、．2、TN、TPTN、TPTable2NutrientinputsoftotalnitrogenTNandtotalphosphorusTPbyplantedvegetablesstockedfishandformulafeedandremovalofTNandTPbyharvestedvegetableandfishinplantedandcontrolpondsTP/gMean±SDMean±SDTN/gMean±SDMean±SD31830±92329622±85993015±269786734±25154．0±0．220±11585±571542±567316±2637174±25830240±78628080±73085680±222879560±20681543±627820±3138485±3056064±21835237±126929004±10443．36～9TN、TPTN3．0mg·L－1TP0．4mg·L－1．10、11TN、TPp＜0．05．TAN．COD9、10COD．Chla10．30cm9、10、11．DOpHDO111．、．4Discussion2．100kg．、．．．TN8．41%TP4.85%、2006TN、TP18．2%30．6%Lietal．2009．28%Quilleréetal．1995lemnaminor15%17%Schneideretal．2005．1/10．276181TNa、TPb、c、d、ae、fg、h*p＜0．05Fig．1Mean±SDconcentrationsoftotalnitrogenatotalphosphorusbtotalammonianitrogencchemicaloxygendemanddchlorophyllaedissolvedoxygenfandwatertransparencygandvalueofalkalinityhinplantedandcontrolpondsThesymbol*representssignificantdifferencebetweenplantedandcontrolpondsonthesamedayp＜0．05TN25．17%TP15．27%TN30．02%TP21．68%．TNTP．、29%51%Nhanetal．200866%～70%35%～86%Greenetal．1995．TN、TP．、TN、TPCOD．Nayloretal．2003Spielesetal．2000Picardetal．2005．TN、TPCOD．．．Chla．376131．DOpH．DOpHLietal．2009．DOpH．60%、20%199825%、Ruenglertpanyakul2004、20%2001．1/6DOpHLietal．2009．1/10DOpH．10%～20%．5Conclusions1/10TN、TPTN、TP．．．1957—．、[e-mail]erinpondsbyfloating-bedsoillesscultureofplantsJ．JournalofZhanjiangOceanUniversity21329-33inChineseCarpenterSRCaracoNFCorrellDLetal．1998．Nonpointpoll