分析了中华绒螯蟹蟹苗产量降低的原因，提出了保护蟹苗资源的对策。
The cause for the decline was discussed and some management measures to protect this resource were proposed.
通过适量地下水在育苗中的使用，使蟹苗在抱卵率、大眼幼体产量、生长速度及成活率等技术指标上有明显提高，这对中华绒螯蟹育苗研究和指导养殖有重要意义。
The egg mass rate, megalopa yield, growing rate and the survival rate of the young Chinese mitten crab are promoted significantly while proper ratio ground water is applied to the cultivation.
根据1970-1995年长江口中华绒螯蟹蟹苗捕捞情况、产量统计和1996～1998年长江口中华绒螯蟹蟹苗的调查资料，对蟹苗的分布和数量变动进行了分析研究。
The abundance and distribution of Eriocheir sinensis in the mouth of Changjiang River were studied through its occurrence, statistic data from 1970 - 1995 and investigations from 1996 -1998.
根据1970-1995年长江口中华绒螯蟹蟹苗捕捞情况、产量统计和1996～1998年长江口中华绒螯蟹蟹苗的调查资料，对蟹苗的分布和数量变动进行了分析研究。
The abundance and distribution of Eriocheir sinensis in the mouth of Changjiang River were studied through its occurrence, statistic data from 1970 - 1995 and investigations from 1996 -1998.
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