江苏省扬州市江都吴堡及其附近的高邮,一 直是大规模养殖罗氏沼虾的地区。而罗氏沼虾在当 地的水产养殖业中也占有很大的比重。过去的几年, 当地许多养殖户都普遍采用南方地区的养殖方法。 但由于气温关系,要等到五月底至六月初才能开始 放苗。这样一来商品虾上市的时间就落在南方地区 的后面,商品虾价格也相应比较低,对养殖户的经济 Jiangdu Wu Fort Yangzhou City, Jiangsu Province and its nearby Gaoyou, has been a large-scale farming Macrobrachium area. Macrobrachium rosenbergii also occupies a large proportion in the local aquaculture industry. In the past few years, many local farmers have adopted breeding methods in the south. However, due to the temperature relationship, we must wait until the end of May to early June to start Fangmiao. As a result, the listing time of commodity shrimp falls behind the southern region, and the corresponding price of shrimp products is also relatively low. Therefore, the economy of farmers