热带农业工程2025，Vol.49Issue(4)：98-103,6.
中华绒螯蟹放养密度对稻田养殖一龄性成熟蟹的养殖性能和经济效益的影响
Effects of Stocking Density of Eriocheir Sinensis on Culture Performance and Economic Benefits of One-year-old Precocious Chinese Mitten Crab Cultured in Rice Field
摘要
Abstract
Rice-crab co-culture offers advantages including low investment,short production cycles,and mutualistic symbiosis.This study evaluated the effects of two juvenile stocking densities on growth patterns,gonadal development,rice yield and economic benefits of one-year-old precocious crabs.The results showed that:1)Female juveniles exhibited precocious maturity by day 30 post-stocking acrossdensities,achieving 90～95%maturation rates with average body mass of 40 g,where low-density groups showed higher maturation rates than high-density groups;;2)increasing stocking density reduced juveniles survival while elevating total crab yield per unit,but rice yields remained comparable across densities;3)similar gross revenues between density groups,yet low density stocking generated superior net profits and return on investment.In conclusion,under the symbiosis model of"rice+one-year-old precocious crab",the suitable stocking density of juvenile Chinese mitten crab is 37 500 crabs/hm2,can effectively improve the proportion,average body weight and survival rate of precocious crab and obtain better economic benefits.关键词
稻蟹共作/放养密度/一龄性早熟蟹雌体/产量/经济效益Key words
rice-crab co-culture/stocking density/one-year-old precocious female crab/yield/economic benefit分类
农业科技引用本文复制引用
孔娣,张光宝,沈蓓杰,吕永春,奚业文,成永旭,吴旭干..中华绒螯蟹放养密度对稻田养殖一龄性成熟蟹的养殖性能和经济效益的影响[J].热带农业工程,2025,49(4):98-103,6.基金项目
外交部亚洲合作资金项目(No.125A0607) （No.125A0607）
湖州市重点研发计划项目农业"双强"专项(单位:湖州市科学技术局)(No.2023ZD2036) （单位:湖州市科学技术局）
农业农村部和财政部现代农业产业技术体系专项资金项目(No.CARS-48). （No.CARS-48）
