论文部分内容阅读
鲤鱼适应性强,生长快,营养价值高,在渔业生产中占有重要地位。我区西部的黄河鲤鱼、东部哲里木盟的西湖鲤鱼更是著名的优良品种。所以,提高鲤鱼苗种的数量,搞好人工繁殖和孵化工作,非常必要。目前,我区各地人工繁殖孵化鲤鱼大都采用池塘孵化法。这种方法易受气候、敌害和水中污物等不利因素影响。尤其在鲤鱼孵化期间,正值蝌蚪大量繁生季节,孵化池塘中混入蝌蚪后,它往往大量吞食鱼卵,以致降低
Carp adaptability, fast growth, high nutritional value, occupies an important position in the fishery production. The Yellow River carp in the western part of our region and the West Lake carp in the eastern Zheli League are also well-known fine varieties. Therefore, raising the number of carp seed, do a good job of artificial breeding and hatching work, very necessary. At present, most of the artificial hatching carp in our region adopts pond hatching method. This method is vulnerable to adverse factors such as climate, predators and water pollution. Especially during carp hatching, just as the tadpoles flourished in abundance, after hatching ponds were mixed with tadpoles, they often swallowed eggs extensively, resulting in a decrease