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1、·汕頭大學(xué)碩士畢業(yè)論文金玉林：大型紅藻脆江蘺實(shí)驗(yàn)生態(tài)學(xué)初步研究8：1。同時(shí)，在最適宜的營(yíng)養(yǎng)鹽因子環(huán)境條件下，脆江蘺在生化組分（光合色素及可溶性蛋白）和抗氧化能力等方面都表現(xiàn)較好。而在海水總無(wú)機(jī)氮濃度過(guò)低、氮磷比過(guò)高以及NH4+-N在總無(wú)機(jī)氮中所占比例較低等條件下，都不利于藻體正常生長(zhǎng)，會(huì)導(dǎo)致藻體營(yíng)養(yǎng)不良、生長(zhǎng)緩慢。3、脆江蘺在淺海栽培條件下，不同的栽培密度以及不同的栽培深度對(duì)其生長(zhǎng)速率和產(chǎn)量的影響較大，實(shí)驗(yàn)表明合理栽培的夾苗密度為100g/2m，吊養(yǎng)深度為5cm。實(shí)際栽培生產(chǎn)中應(yīng)該控制栽培密度過(guò)高并
2、防止苗繩栽培深度過(guò)大。關(guān)鍵詞：脆江蘺；環(huán)境因子；相對(duì)生長(zhǎng)速率；生化組分；營(yíng)養(yǎng)鹽····II····汕頭大學(xué)碩士畢業(yè)論文金玉林：大型紅藻脆江蘺實(shí)驗(yàn)生態(tài)學(xué)初步研究AbstractGracilariachouaeZhangetXiaiswidelycultivatedinthecoastalareasofFujianprovince,isanendemiceconomicredalgaeinChina.G.chouaecanbeusedtofeedabaloneasahighqualityfeedinaq
3、uaculture,tomakehealthyfoodasseavegetablesbecauseofitsmedicinalvalueandfoodvalueWithexcellentsuitability,fastgrowthandlargebiomass,G.chouaecanbeusedtoabsorbnitrogenandphosphorusinwater,torepairwaterofeutrophication,andtopreventredwaterbloom.Inordertogr
4、aspoptimumtemperature,salinity,lightintensity,nutrientsandotherenvironmentalconditionsandexperimentalparametersforgrowthunderlaboratoryconditions.Inthispaper,theeffectsofdifferentphysicalfactors(temperature,salinity,irradiance)andchemicalfactors(totali
5、norganicnitrogenconcentration,ratiosofnitrogenandphosphorus,ratiosofNO3--N：NH4+-N：NO2--N)ontherelativegrowthrate(RGR)ofG.chouaeandbiochemicalconstituentsincludedthecontentsofphotosyntheticpigments,phycoerythrin(R-PE),phycocyanin(R-PC),theactivitiesofsu
6、pereoxidedismutase(SOD),catalase(CAT)andthecontentofmalondialdehyde(MDA)wereinvestigated.Andmeanwhile,underthemodeofmarineaquiculture,effectsofdifferentculturaldensityandculturaldepthontherelativegrowthrate(RGR)ofG.chouaewereinvestigated.Combiningtothe
7、resultsofindoorecologyexperiment,weexplorethemostappropriateconditionforG.chouae,whichprovidetechnicalguidanceandthebasisforSeacultivationproduction.Theresultswereanalyzedbytheresultofdetermination,wearriveatthefollowingconclusion:1.Underlaboratorycond
8、itions,ResultsindicatethattheappropriatetemperatureforgrowthofG.chouaeis14-26℃,andoptimumis17-20℃;theappropriatesalinityforitsgrowthis20-35andoptimumis30;theoptimumirradianceforitsgrowthis150μmol·（m-2·s-1）.Meanwhile,underenvironmentalco
