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宁波市江北区洪塘镇旧宅村养鱼专业户徐祖达,在江北区水产管理处的支持、指导下,在承包19.5亩鱼塘中划出一口3亩鱼塘养殖罗氏沼虾。从1990年5月26日开始放虾苗3.5万尾,养153天,于9月24日起陆续起捕,至10月26日干塘捕净,收获罗氏沼虾185.2公斤,折亩产61.8公斤;捕鱼种875公斤,折亩产291.1公斤。鱼、虾亩产353.9公
Under the guidance of the support and guidance of Jiangbei District Aquatic Management Office, Xu Zuda, a specialized fish farming specialist in the old village of Hongtang Town, Jiangbei District, Ningbo, draws a pond of 3 acres of fish ponds for breeding Macrobrachium rosenbergii under the contract of 19.5 mu of fish ponds. Starting from May 26, 1990, 35,000 shrimp and shrimp plants were raised and raised for 153 days, starting to catch on September 24 and October 26 to catch a net of dry ponds, harvesting 185.2 kg of Macrobrachium rosenbergi and yielding a yield of 61.8 mu Kg; fishing species 875 kilograms, fold yield 291.1 kilograms. Fish, shrimp yield 353.9 public