鱼菜共生系统中种养密度和投喂频率对大口黑鲈生长及水质的影响

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分类号：S964 文献标志码：A 文章编号：1008-0864（2025）11-0043-13

Abstract：Toexploretheimpactofdiferentplantingdensities，stockingdensitiesandfedingfrequenciesonperformanceof Micropterus salmoidesand water qualityin fish-vegetable symbiosis，the plant densities were setat 32（ a1， ），46（ a2） 二’ 60 （2 plants m-2（a3） ，the stocking densities were set at 8 （b1），13（b2），18kg∙m-3（b3） ，the feeding frequency were set at 1（ Φc1） ， 2（c2） ，3 times d-1 （ c3） ，respectively. The optimal combination of stocking density and feeding frequency were screened through thecombined treatmentof3factors and3levels.Theresults showed thatplanting density had significant effecton weight gain，weight gain rate，specific growth rate and feed coeffcient；feeding frequency hadsignificanteffectonweightgain，feedingfrequencyhad significanteffctonthecrudeproteinandcrudefatcontent in muscle.Thecontentsofammonia nitrogen，nitritenitrogen，total nitrogenand total phosphorus ineach treatment groupincreased significantly over time，peaking on the 7th day.The ammonia nitrogen，nitrite nitrogen and total nitrogen were stable after 37 d，while the total phosphorus stabilized after 25 d.The water quality indexes of a2b1c2 （204号 and a2b2c3 treatments were better than those of the other treatments.In this aquaponics system，the letuce planting density of 6 plants‘ m-2 ，the largemouth bass stocking density of 13kg⋅m-3 and the feeding frequency of 3 times* d-1 （204号 couldyield theoptimal performance in termsof growthandmusclequalityoflargemouth bass，and water quality regulationefect.Above resultsprovidedatheoreticalreferencefor theplanting andstocking inaquaponicssystem.

Keywords：fish vegetable symbiosis；planting density；feeding frequency；growth；muscle；water quality

鱼菜共生系统的主要原理是系统中有机物经过鱼类代谢产生无机物氨氮，氨氮再通过有益微生物分解转化为硝酸盐，然后被植物吸收利用，从而形成良好的生态循环模式[1-2]。（剩余16609字）