论文部分内容阅读
上海市去年底召开第三次罗氏沼虾养殖技术协作组会议。会议总结了去年罗氏沼虾养殖所取得的成绩,分析生产中存在的问题,预测今年的养殖生产规模,并对去年初制定的《上海市罗氏沼虾养殖技术规范(试行稿)》进行讨论修改。 市郊各区县的育苗和养殖单位统计表明,去年上海市八个育苗单位繁殖罗氏沼虾虾苗3.1亿尾,比上年的1.7亿净增82.35％。养殖面积15300亩,约占市郊精养鱼塘面积的9.56％,比上年增加119％。去年平均亩产92.5公斤,比上年下降9.4％,每公斤虾销售单价由上年的58元/公斤下降到50元/公斤,下降13.
Shanghai held the third collaboration meeting of Macrobrachium rosenbergi cultivation technology late last year. The conference summarized the achievements made by Macrobrachium rosenbergii last year, analyzed the problems existing in the production, predicted the scale of this year’s aquaculture production and discussed and revised the “Shanghai Macrobrachium Macaea Technical Specification (Trial Version)” formulated at the beginning of last year . Suburban counties and nurseries and breeding units statistics show that eight nursery units in Shanghai last year, 310 million breeding Macrobrachium shrimp, a net increase of 82.35% over the previous year’s 170 million. Aquaculture area of 15,300 mu, accounting for about 9.56% of the suburbs of intensive fish ponds, an increase of 119% over the previous year. Last year, the average yield per mu was 92.5 kilograms, down 9.4% over the previous year. The selling price per kg of shrimp dropped from 58 yuan / kilogram in the previous year to 50 yuan / kilogram, down 13 points.