渤海湾条斑紫菜养殖的初步研究

A Preliminary Study on the Cultivation of Porphyra yezoensis in Bohai Bay

本文对2017年11月下旬至2018年5月上旬在渤海湾养殖的条斑紫菜进行整个生长周期(1月中旬-3月中旬结冰期除外)的取样调查,并对其生长的海域环境因子进行实时监测。通过对头茬紫菜的生长状况与环境因子数据进行分析,初步证实,条斑紫菜适宜在渤海湾海域生长,水温、盐度、pH和亚硝酸盐是限制其生长的重要环境因子,如若在该海域环境条件适宜时及时张挂网帘,其生长期可延长至5个月左右。调查还发现,如何渡过冬季结冰期是该海域条斑紫菜养殖亟待解决的关键问题,本文亦提出两种方案,效果如何还有待进一步试验论证。

Sampling survey was carried out on the whole growth cycle of Porphyra yezoensis breeding in Bohai Bay from late November 2017 to early May 2018 except the ice period from mid-January to midMarch next year,and the marine environment factor were monitored simultaneously.According to the analysis of the growth condition of P.yezoensis and the environmental factors,the preliminary results confirmed that P.yezoensis could grow well in Bohai Bay.The water temperature,salinity,pH and nitrite are important environmental factors limiting its growth.If hanging net curtain when environmental conditions in the area is suitable for the growth of P.yezoensis,its growth period will be extended to five months.Survey also found that streaking through the winter ice period is the key problem to be solved for P.yezoensis cultivation in the area.We proposed two strategies for solving this problem with their effectiveness waiting for being tested in further.