论文部分内容阅读
目前，鳇鱼天然资源近于枯竭，几乎不能形成天然群体。为了保护鳇鱼资源，发展黑龙江的经济鱼类，我们于“九五”期间对达氏鳇进行了人工繁殖试验，通过几年的艰苦工作，1999年获得成功。现将达氏鳇人工繁殖时应注意的几个问题小结如下。1 亲鱼的选择达氏鳇个体硕大，性成熟晚
At present, the natural resources of anchovy are near exhaustion, almost can not form a natural group. In order to protect the anchovy resources and develop economic fish in Heilongjiang Province, we conducted artificial breeding trials of Daphne foetida in the Ninth Five-year Plan Period. After several years of hard work, we succeeded in 1999. Now Artemisia annua artificial breeding should pay attention to several issues are summarized as follows. 1 broodstock choice Darth Vader individual gigantic, sexually mature late