【摘要】 本文报导0.7厘米罗氏沼虾苗经3～21天的网箱暂养,体长达到1.0～2.5厘米,每公顷池塘放养11.35万尾左右,与鱼混养,经120天的饲养,达到了每公顷产罗氏沼虾1532.3公斤和鲢鱼1152.0公斤,平均每公顷经济效益达43059.0元,投入产出比为1:1.79,罗氏沼虾的饲料系数2.12,平均成活率75.3％,平均规格18.4克。更多还原

【Abstract】 This article reports that the juveniles of Macrobrachium rosenbergii have the body length from 1. 0cm to 2.0cm after nursery cultivation in net -cages for 3 to 25 days,which were cultured with fishes and had a culturing density of 113 500 individuals per hectare,after being cultured for 120 days,their output were 1 532. 3Kg Macrobrachium rosenbergii and 1152. 0Kg Silver carps per hectare. The profit was 43 059. 0RMB yan per hectare,and the ration of cost and yield is 1:1. 79. The feed/ gain ration of Macrobrachium rosenbergii is 2. 12, the average survival rate is 75. 3%,the avevage weight is 18,4g per individual.更多还原