笔者通过基层技术服务,对50户蟹农进行调查,总结出蟹农提高经济效益应从以下方面着手。(一)走苗种本地培育之路,降低苗种成本由于河蟹养殖规模发展太快,优质长江蟹种匮乏,南北蟹种混杂,劣质蟹种充斥市场而且贩买贩卖,加上长途运输使蟹种受 The author through the grass-roots technical services, survey of 50 crab farmers concluded that raising crabs economic benefits should proceed from the following aspects. (A) to take the seedlings of local nurturing the road to reduce the cost of seed As the scale of crab farming to develop too fast, lack of high quality Yangtze River crabs, north and south crab species mixed, inferior crab species flooding the market and trafficking, coupled with long-distance transport to crab Seed by