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近年来，长江口天然蟹苗很少旺发，长江中下游一带的幼蟹（俗称扣蟹）资源锐减。为了发展河蟹养殖，人工繁殖苗种已成为养殖主要来源，由于一些养殖单位不了解大眼幼体生物学特性，盲目购之养殖，有的设运到养殖地就全军覆没，造成很大损失。笔者根据近几年的实践，谈谈采购大
In recent years, the Yangtze River Estuary seldom flourish natural crabs, the Yangtze River in the vicinity of the crabs (commonly known as buckle crab) resources dropped sharply. In order to develop crab farming, artificial breeding seed has become the main source of aquaculture. Some breeding units do not understand the biological characteristics of big-eyed larvae and blindly buy aquaculture. Some of them were shipped to breeding areas and annihilated, causing great losses. According to the author’s practice in recent years, talk about procurement