海洋渔业2025，Vol.47Issue(5)：610-618,9.
桑沟湾海域不同养殖海区海带生长性状的研究
On the growth traits of Saccharina japonica in different aquaculture areas of Sanggou Bay
摘要
Abstract
In order to explore the suitable cultivation of Saccharina japonica varieties in different sea areas and their high-yield and high-quality breeding techniques,the cultivation experiments of three varieties of Saccharina japonica,"Rongfu","205"and"Huangguan no.1"were carried out by selecting shallow area(water depth 5-15 m),medium area(water depth 15-20 m)and deep area(water depth 20-30 m)in aquaculture sea areas of Sanggou Bay from November 2022 to June 2023.The seawater and experimental kelps at three sampling stations in shallow,medium and deep sea areas of Sanggou Bay were sampled and measured for seven consecutive voyages in the middle of each month during the experimental period to obtain the spatial and temporal characteristics of each environmental factor and the growth indexes of three varieties.The environmental factors included water depth,flow velocity,transparency,water temperature,salinity and nutrients,of which nutrients refered to dissolved inorganic nitrogen(DIN)and phosphate(PO4-P)in seawater.The growth indexes included body length,body width,fresh body weight,dry body weight and fresh-dry ratio.The results showed that there were spatial and temporal differences in water temperature,salinity and nutrient in shallow,medium and deep aquaculture areas of Sanggou Bay.The water temperature and salinity in shallow area changed greatly,and the nutrient content was relatively low.The growth traits of different sea areas and different varieties of kelp were different.Three varieties of kelp in shallow,medium and deep sea areas all grew rapidly from December 2022 to April 2023.However,the growth of kelp was slow or even negative from May to June 2023,but the dry matter accumulation continued to increase."205"in medium sea area showed the largest body length,fresh body weight and dry body weight in June 2023,and the smallest fresh-dry ratio.The maximum body width of"Rongfu"in shallow sea area was 47.70 cm in June 2023."Rongfu"withered most seriously in shallow sea area from May to June 2023.The research showed that the growth of kelp was related to the environmental factors in aquaculture sea areas of Sanggou Bay and the varieties of kelp.The high-quality kelp varieties suitable for cultivation in shallow,medium and deep sea areas were"Rongfu","205"and"Huangguan no.1",respectively.The results can provide data support and guidance for the selection of suitable varieties of kelp cultivation in different sea areas,timely scientific harvesting of kelp,and offshore aquaculture of kelp.关键词
桑沟湾/水深/海带/环境因子/生长性状Key words
Sanggou Bay/water depth/Saccharina japonica/environmental factor/growth trait分类
农业科技引用本文复制引用
王珊珊..桑沟湾海域不同养殖海区海带生长性状的研究[J].海洋渔业,2025,47(5):610-618,9.基金项目
山东省海洋经济藻类资源开发与利用工程技术协同创新中心专项(MADU20210002) （MADU20210002）
山东省高等职业教育水产养殖技术高水平专业群(2022-33) （2022-33）
山东省高等学校青创人才引育计划食品加工技术技能创新团队项目(2019-133) （2019-133）
