论文部分内容阅读
在辽宁凤城和辽宁盘锦分别进行了土池拉氏夏花、1龄秋片苗种培育生产性试验。夏花培育池0.27hm2,轮虫高峰期下塘拉氏水花鱼苗12.1万尾。经30d培育,鱼苗的平均全长达37.90mm,增长5.6倍,平均体质量达0.51g,增长510倍,出塘拉氏夏花7.9万尾,成活率65%。1龄秋片苗种培育试验池塘面积0.19hm2,放养夏花8万尾,平均全长4.5cm,平均体质量0.8g,经110d培育,平均全长达10.46cm,增长2.3倍,平均体质量达17.76g,增长22.2倍,最大个体20g,出塘秋片鱼种76 800万尾,1363.96kg,成活率96%,饵料系数1.6,平均7306.5kg/hm2。
In Fengcheng, Liaoning Province and Panjin, Liaoning Province, we carried out the productive experiments on the cultivation of larvae, Summer flower cultivation pond 0.27hm2, rotifers under the pond pond 121,000 fish. After 30 days of cultivation, the average length of fry was 37.90mm, an increase of 5.6 times. The average body weight reached 0.51g, an increase of 510 times. There were 79,000 fry in summer and the survival rate was 65%. The first instar autumn seedling cultivation test pond area 0.19hm2, stocking summer flowers 80,000, the average full-length 4.5cm, average body weight 0.8g, after 110d incubation, the average full length of 10.46cm, an increase of 2.3 times the average body mass Up to 17.76g, an increase of 22.2 times, the largest individual 20g, 76,880,000 pond autumn fish species, 1363.96kg, 96% survival rate, feed coefficient 1.6, an average of 7306.5kg / hm2.