摘要
为探索双季稻-鱼种养模式的生态经济效益,本研究利用能值分析的方法,综合分析了湖南省宁乡市双季稻-鱼种养模式与双季稻模式的能值投入与输出,对比了两种模式的经济效益,并利用文献对比分析了其他稻田综合种养模式的能值可持续发展指标。结果表明:双季稻-鱼模式的能值投入和输出均高于双季稻模式,能值投入分别为4.29×10^(16)、3.24×10^(16) sej·hm^(-2),能值输出分别为8.52×10^(16)、7.71×10^(15) sej·hm^(-2)。在能值可持续发展指标方面,双季稻-鱼模式的净能值产出率和能值可持续发展指数(2.76、7.10)均高于双季稻模式(0.37、0.66)、太湖流域的中稻单作(1.38、1.92)、稻-鱼(1.26、1.47)、稻-鸭综合种养模式(1.23、2.21)和贵州从江县的稻-鱼综合种养模式(1.52、0.78)。而双季稻-鱼模式的环境负载率为0.39,低于双季稻模式(0.56)、中稻单作模式(0.72)和贵州从江县及太湖流域的稻-鱼(2.40、0.85)、稻-鸭(0.56)及上海青浦区的稻-蛙综合种养模式(0.46)。在经济效益方面,双季稻-鱼模式的平均利润(50322元·hm^(-2))显著高于双季稻(9118元·hm^(-2))模式(P<0.05)。研究表明,双季稻-鱼模式可持续发展力较强,但自给自足的能力较弱,过于依赖于市场和环境资源,在生态经济效益方面提升空间大。本研究结果可为双季稻-鱼模式的推广和健康发展提供了理论参考和依据。
To explore the ecological and economic benefits of the double cropping rice-fish co-culture pattern,this study utilized energy analysis to comprehensively analyze the emergy input and output of double cropping rice-fish and rice patterns in Ningxiang City,Hunan Province.The economic benefits of the two models were compared,and a literature review was conducted to compare the emergy sustainability indicators of these two models with other integrated rice-field cultivation patterns.Results indicate that the emergy input and output of the double cropping rice-fish pattern are higher than those of the double cropping rice pattern,with energy input of 4.29×10^(16),3.24×10^(16) sej·hm^(-2) and energy output of 8.52×10^(16),7.71×10^(15) sej·hm^(-2),respectively.Regarding emergy sustainability indicators,the net emergy yield ratio(2.76)and emergy sustainability index(7.10)of the double cropping rice-fish pattern were higher than those of the double cropping rice pattern(0.37,0.66),central rice monoculture in the Taihu Lake basin(1.38,1.92),rice-fish co-culture(1.26,1.47),rice-duck integrated farming(1.23,2.21),and rice-fish integrated farming in Congjiang County,Guizhou(1.52,0.78).The environmental load rate of the double cropping rice-fish pattern is 0.39,lower than that of the double cropping rice pattern(0.56),central rice monoculture(0.72),rice-fish co-culture(2.40,0.85),rice-duck integrated farming(0.56),and rice-frog integrated farming in Qingpu District,Shanghai(0.46).In terms of economic benefits,the average profit of the double cropping rice-fish pattern is significantly higher than that of the double cropping rice pattern(P<0.05),reaching 50322 yuan·hm^(-2) and 9118 yuan·hm^(-2),respectively.Results suggest that the double cropping rice-fish pattern exhibits strong sustainability,with a lower environmental load rate but weaker self-sufficiency,heavily relying on market and environmental resources.There is substantial room for improvement in ecological and economic benefits.This study provides theoretical references and a foundation for promoting and healthy development of the double cropping rice-fish pattern.
作者
秦婵元
喻超
孙澳辉
李奎
胡慧莹
胡腾
叶莹莹
王华
QIN Chanyuan;YU Chao;SUN Aohui;LI Kui;HU Huiying;HU Teng;YE Yingying;WANG Hua(College of Environment and Ecology,Hunan Agricultural University,Changsha 410125,China)
出处
《农业资源与环境学报》
北大核心
2025年第1期218-227,共10页
Journal of Agricultural Resources and Environment
基金
国家重点研发计划项目(2022YFD1700103,2021YFD1700804)
湖南省重点研发计划项目(2021NK2059)
湖南省现代农业(水产)产业技术体系项目(HARS-07)
湖南省水利厅项目(XSKJ2022068-32)
湖南省自然科学基金项目(2023JJ30308)
长沙市自然科学基金项目(kq2208078)。
关键词
能值分析
双季稻
稻田综合种养
效益评价
emergy analysis
double cropping rice
rice-aquatic co-culture
benefit evaluation
