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浙江省上虞市是目前全国河蟹养殖规模较大的地区,去年鱼蟹混养面积10500亩,河蟹专养1828亩,商品蟹产量达190吨,产值超过3000万元,亩净收益混养为1524.83元,专养2656.82元,经济效益十分显著。随着养殖规模的不断扩大,苗种问题很突出,已成为制约当前河蟹养殖的瓶颈因素。 一、苗种选购 从上虞市养殖情况来看,只要苗种质量好,养殖
Shangyu City, Zhejiang Province is currently the larger area of crab farming throughout the country last year, fish and crab breeding area of 10,500 acres, 1828 acres of crab ad hoc breeding, crab production reached 190 tons, the output value of more than 30 million yuan, mu net income polyclinic 1524.83 Yuan, special maintenance 2656.82 yuan, the economic efficiency is very significant. With the continuous expansion of breeding scale, the seedling problem is very prominent and has become the bottleneck factor restricting the current crab breeding. First, seed purchase From the Shangyu City breeding situation, as long as the seed of good quality, breeding