中国水产科学2026，Vol.33Issue(7)：50-66,17.DOI:10.12264/JFSC2026-0003
"虾-藻-贝"串塘分区循环养殖系统氮磷收支研究
Study on nitrogen and phosphorus budgets in the"Shrimp-Microalgae-Shellfish"multi-pond serial recirculating system
摘要
Abstract
To address the challenges of niche conflict and restricted tailwater discharge in traditional polyculture ponds,this study constructed a"Shrimp-Microalgae-Shellfish"serial pond recirculating system based on the Integrated Multi-Trophic Aquaculture(IMTA)theory.Two experimental groups with low and high salinity(group L at 10‒15 and group H at 20‒25),were established to quantify the nitrogen(N)and phosphorus(P)budgets and analyze the regulatory effects of salinity.The results showed that:(1)Feed and sediment were the primary source and sink,respectively.Feed was the dominant input source of N and P(accounting for 87.79%/80.65%in group L,and 92.15%/86.50%in group H),while sediment deposition was the main output pathway(accounting for 49.44%/71.41%in group L and 54.47%/71.04%in group H).(2)Salinity exhibited a"trade-off"effect on cultured species.The high salinity environment optimized the osmotic energy expenditure of Litopenaeus vannamei,resulting in higher N and P utilization rates(31.47%and 10.07%),when compared to the low salinity environment.Conversely,the low salinity environment was more suitable for the physiological metabolism of Sinonovacula constricta,yielding better survival and nutrient utilization efficiency than the high salinity group.(3)Spatial partitioning enhanced purification,the system maintained favorable water quality parameters throughout the entire culture period without water exchange.The synergistic algae-clam unit achieved a total nitrogen(TN)removal rate of 49.04%‒55.47%and effectively reduced ammonia and nitrite,but its total phosphorus(TP)removal was relatively limited(31%‒32%).The study confirmed that the"Shrimp-Algae-Clam"serial system could achieve directional transformation and efficient utilization of nutrients through spatial partitioning.Given that a single constant salinity cannot simultaneously satisfy the optimal requirements of both shrimp and clams,it is recommended to implement dynamic salinity regulation based on the growth stages of the target species or to select euryhaline species to maximize the comprehensive benefits of the system.关键词
串塘分区养殖/氮磷收支/盐度/凡纳滨对虾/缢蛏Key words
multi-pond serial recirculating system/nitrogen and phosphorus budgets/salinity/Litopenaeus vannamei/Sinonovacula constricta分类
农业科技引用本文复制引用
杨泽宇,何京,郑侠飞,林志华,何琳.."虾-藻-贝"串塘分区循环养殖系统氮磷收支研究[J].中国水产科学,2026,33(7):50-66,17.基金项目
国家现代农业产业技术体系项目(CARS-49) （CARS-49）
宁波市公益性科技计划项目(2024S021) （2024S021）
宁波市青年科技创新领军人才项目(2024QL065) （2024QL065）
宁波市甬江引才工程项目. （）
