论河蟹养殖的两个技术误区

目前我国河蟹养殖中存在两个技术误区；遣传污染的海水污染，即蟹苗，扣蟹，亲蟹从不同地区随购入，人工育苗，养殖造成不同种群杂交，使优良群系濒临灭绝；育苗废水排入中，再反复提取污染的海水育苗，造成蟹病逐年增加，给正常河蟹生产带来严重问题。

On Two Technical Errors in River Crab Culture

Nowadays there are two technical errors in farming river crab in our country:hereditary POllution and sea water pollution. Purchasing at will crab larvae,young and adult crab from different regions for artificial seed-rearing or farming up to the commercial crab caused stock hybridization with the result that the good species of crab is facing extinction ;the seed-rearing sea water was drained into the sea to cause it polluted and the polluted sea water was repeatedly pumped into the seedrearing pond with result that the crab disease is increasing year by year so as to have serious influence on the crab production. For these two errors the paper Put forward relatively remedial measures