天津盐碱水环境下黄金鲫繁育技术研究
Study on Breeding Technology of Golden Crucian Carp in Saline-Alkaline Water Environment of Tianjin

天津滨海区域分布着大面积滨海型盐碱水土资源，该类水体普遍存在高矿化度、高碳酸盐碱度、高硬度、高pH值的“四高”特征，水土环境胁迫性较强，长期以来难以开展常规农业与水产养殖生产。随着盐碱地生态渔业改良技术的迭代升级及耐盐碱水产良种的推广应用，滨海盐碱水土资源的渔业资源化利用价值逐步凸显。黄金鲫作为国家级优良杂交水产新品种，具备抗逆性强、耐盐碱性能优异、生长速率快、养殖效益稳定等种质优势，高度适配天津滨海盐碱水环境养殖条件。本文基于天津地区盐碱水质理化特征与黄金鲫生物学特性，结合本地养殖试验成果与规范化繁育技术体系，系统阐述盐碱水环境下黄金鲫亲本选育、强化培育、人工催产授精、受精卵孵化、苗种盐碱驯化培育的全流程关键技术，针对性解决盐碱水环境下亲鱼性腺发育受限、胚胎存活率低、鱼苗盐碱应激死亡等生产难题，旨在构建适配天津本地化的黄金鲫盐碱水高效繁育技术模式，为滨海盐碱地渔业资源化利用、黄金鲫苗种规模化繁育及产业规范化发展提供科学的理论参考与实操技术支撑。
Large areas of coastal saline-alkali water and soil resources are distributed in the Binhai Area of Tianjin. Such water bodies are generally characterized by high mineralization, high carbonate alkalinity, high hardness and high pH value (the “four-high” properties), resulting in severe abiotic stress on water and soil environments. For a long time, conventional agriculture and aquaculture production have been difficult to implement here. With the iterative upgrading of ecological fishery improvement technologies for saline-alkali land and the popularization and application of saline-alkali-tolerant improved aquatic breeds, the value of saline-alkali coastal water and soil resources for fishery utilization has gradually become prominent. As a nationally approved superior hybrid aquatic new breed, golden crucian carp features strong stress resistance, outstanding saline-alkali tolerance, fast growth rate and stable breeding economic benefits, making it highly suitable for aquaculture under the saline-alkali water environment in Tianjin Binhai. Based on the physicochemical properties of saline-alkali water in Tianjin and the biological characteristics of golden crucian carp, combined with local breeding trial data and standardized propagation technical systems, this paper systematically elaborates the full-process key technologies for golden crucian carp breeding in saline-alkali water, including parent fish selective breeding, intensive rearing, artificial induced spawning and insemination, fertilized egg incubation, as well as fry acclimatization and cultivation under saline-alkali conditions. The proposed technologies specifically tackle practical bottlenecks in saline-alkali aquaculture such as restricted gonadal development of broodstock, low embryonic survival rate and fry mortality caused by saline-alkali stress. This study aims to establish a localized high-efficiency propagation technical model for golden crucian carp in Tianjin’s saline-alkali waters, providing theoretical references and practical technical support