【摘要】 <正> 条斑紫菜(Porphyra yezoensis culeda)的人工养殖。自1970年在北方推广生产以来,养殖面积有了很大的发展。山东沿海以及辽宁、江苏等省不少国营和集体单位,开展了条斑紫菜的人工养殖,在生产上取得了可喜的成绩。但是,在养殖过程中,也反映出不少问题,其中比较突出的是一些地区的产量一直不够稳定,使进一步发展紫菜养殖受到影响。造成产量不稳定的原因很多,由于对叶状体阶段从小苗到大苗的生态习性了更多还原

【Abstract】 The influence of the density of conchospore-collecting on the spore-ling number and the production fo Porphyra yezoensis was investigated in1974--1975. Both vinylon net and bolting silk were used as the substratesfor the examination. Porphra harvested from vinylon nets showed: 1. Within the range of<1, 3--5, 20--30, 40--60 and>100spores/mm~2the higher the conchospore-collecting density the more the sporelingswould be. However, as the density continues to raise, the increase insporelings was not evident. 2. Uuder semi-floating raft conditon, the density of 3--5spores/mm~2 could meet the needs of the production. 3. In case of all-floating raft condition, the density of conchospo-re-collecting should be higher. That would be owing to the number of themonospores formed from Porphyra yezoensis was less under this condition.更多还原