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1989年以来的3年里,我省紫菜生产处在低谷,若以1988年的单产为一百,那么后续三年单产下降的幅度分别是44%、43.2%和32.1%。造成紫菜失收与减产,各地受害原因与程度均不相同;有的是壳孢子采苗不佳,有的是脱苗或烂苗引起,有的是赤潮为害。罗源县去年养殖3000多亩,获得收成的仅200亩,情况是严重的,若从受害时间分析,危害最严重时期在养殖前期,即采苗至剪收时间,在此时期遭受的损失,约占60—80%。所以,养殖前期的工作是紫菜生产成败的关键,而壳孢子采苗时间是这关键的核心。
In the three years since 1989, the production of seaweed in our province was at a low level. If the yield per head in 1988 was one hundred, the yields in the following three years decreased by 44%, 43.2% and 32.1% respectively. Caused by the loss of seaweed and cut production, the causes and extent of victims are not the same; some are poorly collected seedlings of conchospores, and some are caused by seedlings or rotten seedlings, and some red tide damage. Last year, Luoyuan County farmed 3,000 mu and obtained only 200 mu of harvested land. The situation is serious. From the analysis of the victimization time, the damage in the earlier period of breeding, that is, the time taken for seedling to harvest, during this period, About 60-80%. Therefore, the pre-breeding work is the key to the success or failure of seaweed production, and the time of collecting shelled conchospores is the key core.