摘要
应用从湛江引入,并在浙江自然越冬后生长正常的,以及从海口新引入的细基江蓠繁枝变种,作为实验材料进行越冬保种研究。本文首次报道了不同的种藻密度、培养液比重、水层、光强、底质及人为低温处理,对存活和生长的影响。结果表明:新引入的种藻具生长快、对环境的剧烈变化敏感;已越冬的种藻更能适应低温低比重的条件。以0.3m左右的水层,比重1.010,避免直射强光的低光照,能够安全保种越冬。低温干冻比水冻更易致死。可以经受7天的0℃低温。砂质的底质有利于越冬保种。在浙江普通的育苗室内就可以进行越冬,越冬后,死亡率低于0.07％/d。
Using the Gracilaria tenuistipitata V. liui Chang & Xia, some of which came from the Zhanjiang sea area and naturely wintered in Zhejiang, the remaining were newly introduced from the Haikou Sea area, the wintering seedling preservation experiment was conducted. The artificial controlled environment factors, including seaweed density, the depth of seawater, salinity, PFD, substrate and low temperature, have effects on their survival and growth. The new seaweed grows faster and is more sensitive to the change of these factors. The wintered seaweed is more adaptive to the change. The optimum factors are 0.3m of depth, 1.010 of specific weight, and low PFD (less than 5000 Lx). The sand substrate can help its growth. The low temperature injures the seaweed in the air more than in seawater. It could survive after 8 days in 2-3℃. The death rate in ordinary seedling rooms is less than 0.07% per day after wintering.
出处
《海洋湖沼通报》
CSCD
北大核心
1992年第4期63-69,共7页
Transactions of Oceanology and Limnology
关键词
细基江蓠
繁枝
变种
越冬
藻类
Gracilaria tenuistipitata V.liui
Zhejiang
wintering
