我市从1989年开始在溪河开展人工增殖河蟹,于去年获得农业部无公害水产品认证。纯天然河蟹150克以上销售价在120～240元/千克。目前,河蟹增殖在我市成为一大热点,市境内的九龙江北溪及其四条支流,蟹农们竞相承包,养殖河蟹。在不人工投饵的情况下,其投入产出比为1:8,现将多年来 Since 1989, our city has carried out artificial propagation of crabs in the river and gained the pollution-free aquatic product certification of the Ministry of Agriculture last year. More than 150 grams of natural crabs selling price at 120 ~ 240 yuan / kg. At present, the proliferation of crabs has become a hot spot in the city. In the city of Beilu, Jiulongjiang and its four tributaries, crab farmers compete to contract and culture crabs. In the absence of artificial feeding, its input-output ratio of 1: 8, now for many years