摘要
于1987—1989年利用人工培苗和潮间带栽培方法进行了坛紫菜和条斑紫菜轮栽试验。结果表明,用加大育苗室的采光面积、保温和缩短光照时间促熟措施,可使坛紫菜丝状体在8月初开始大量放散壳孢子,8—9月中旬采壳孢子苗,采苗后约35天开始采收紫菜,至12月初结束。9月中旬采苗的,亩产干品83.3kg。条斑紫菜丝状体按常规法育苗,于10月中旬采壳孢子苗,先在海上密挂育苗,至11月底取下坛紫菜网,将条斑网分挂到坛紫菜架上,进行了两种紫菜的轮换栽培,直至翌年5月初结束,亩产干品120.1kg。两种紫菜总产量达203.4kg,比单作增产近一倍。
Presented is an account of the rotation culture of P. haitanensis and P. yezoensis by using the favorable temperature of seawater in North China to raise the per unit yield. The experimental procedure and results are as follows:1. Cultivation of p. haitanensis(1) The conchocelis phase: P. haitanensis is a subtropic species whose conchocelis needs high temperature for growth and development. The lighted area in the culture room was increased to raise temperature and the tank was covered by polyethylene membrane to advance development of the conchocelis. In the different stages of growth and development of the conchocelis, the light intensity was regulated and the period was reduced. The carpospores were collected at the end of March. Conchospores can be discharged from conchocelis of P. haitanensis on time if the above methods are adopted.(2) The leafy phase: Conchospores were collected from August until the middle of September. After 10 days the sporelings grew to 1-2 mm, and after nearly 35 days, the thalli averaged 21.3 cm in length. The longest, which could be 46 cm, were first harvested by scissors leaving 7 cm on nettings. The thalli grew slowly when the seawater was below 10℃ in December. The yield per mu (180 m2) was 83.3kg.2. Cultivation of P. yezoensisConchocelis of P. yezoensis was cultured by the common method. Conchospores of P. yezoen-sis were collected in the middle of October. The nets were constricted to the rate 1:4 and hung on semi-floating raft in the intertidal region. By the end of November, when the sporelings on the netting were 5-30 cm in length, the nets loaded with P. haitanensis were taken away and replaced by the nets of P. yezoensis. First harvest of the P. yezoensis was at the middle or end of December, the last harvest was at the beginning of May of the next year. The yield per mu could be up to 120.1 kg.The total yield of two species could be 203.4kg. (dry weight), higher than with only one species.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1992年第5期537-540,共4页
Oceanologia Et Limnologia Sinica
基金
山东省水产局项目 D51 870629号
关键词
坛紫菜
条斑紫菜
轮栽
紫菜
试验
P. haotamemsos, P. yezoensis, Rotation culture.
