摘要
１９９０年７月至１９９２年７月，连续三年投罗氏沼虾苗７０万尾放入南渡增殖，回捕率达２４．０５％，最大个体５８８ｇ，抱卵雌虾占捕获量１０％；每年可捕到一定数量体长７～１１ｃｍ、体重１０～３５ｇ的罗氏沼虾。
From July, 1990 to July,1992,700,000 Macrobra chium rosenbergii (De Man) fries were dropped into Nandu River three times in succesaion for reproduction.The rate of catch is 24 .05%. The biggest individual of the shrimp weighs 588g.The female shrimps, which are carrying augs, is 10% of the amount that were caught,and some shrimps, which are 7～11cm in length and 10～35g in weight,can be caught every year.
关键词
罗氏沼虾
人工放流
增殖
南渡河
Nandu River
Macrobrachium rosendergii(De Man)
Overwinter naturally
Reproduction
