江蓠筏式人工育苗杂藻清除技术的研究

A TECHNIQUE OF ELIMINATING WILD SEAWEEDS IN ARTIFICIAL GROWING SEEDLINGS OF GRACILARIA ASIATICA

根据生态调查和筏式育苗效果的比较，采取了调低海水比重，每十天浸泡苗帘一次的方法清除杂藻。海水比重调节幅度在１．０２１－１．０１６之间，逐步降低海水比重浸泡苗帘，清除杂藻和各种动物幼虫，使江蓠育苗取得了成功。

A comparison was made between naturally growed and artificilly-raft growed seedlings after ecological investigation. To eliminate wild seaweeds lower gravities of seawater were employed. The gravity ranged from 1.021 to 1.016 according to the length of Gracilaria seedlings and the density of adherent wild seaweeds. The seedling curtains were soaked in the seawater which gravity was lowered step by step every ten days. The result in eliminating wild seaweeds and animal larvae was significant.