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本文通过对坛紫菜丝状体生态及育苗高产措施的研究,结合对几处群众育苗生产的总结,得出下列结论。 1.在浙江中、北部,盛夏水温达到30℃,不影响丝状体的生长和发育。后期多换高温海水,施24ppm磷素,可以增产壳孢子。 2.吊挂培育贝壳定时掉头,可以减少温差和光差影响产生的成熟度差异。后期以黑塑料布遮窗缩光,是丝状体成熟的主要措施之一。 3.相对密度(与4℃水比)为1.013—1.015的海水,不影响生产性育苗。 4.用串长30cm,串距和棒距各5cm以上的吊挂培育优于平面培育,可提高壳孢子放散量85％,提早8天成熟。 5.老壳利用、自由丝状体接种育苗、贝壳渠道刺激等技术,均可增产壳孢子。
In this paper, through the research on the ecology and the high yielding measures of seaweed filamentous larvae and the conclusion of the production of seedling in several places, the following conclusions are drawn. 1. In central and northern Zhejiang, the water temperature reached about 30 ℃ in midsummer, which did not affect the growth and development of filaments. Late for more high temperature seawater, applying 24ppm phosphorus, can increase conchospores. 2. Hanging shell cultivation timed U-turn, you can reduce the temperature difference and the impact of light differences in maturity. Dark plastic sheeting late window shine, filamentous maturity is one of the main measures. 3. The relative density (with 4 ℃ water ratio) of 1.013-1.015 seawater, does not affect the productive nursery. 4. With string length 30cm, the string pitch and stick from more than 5cm above the hanging cultivation is better than the plane cultivation, can increase 85% of conchospores emanation, mature eight days earlier. 5. Use of the old shell, free filamentous inoculation nursery, shellfish channel stimulation technology, can increase conchospores.