沼气能源为核心的寒地生态农业循环经济能流分析  

The Energy-flow Analysis of Agricultural Circular Economy with the Biogas as the Core in Cold Region

作　　者：赵光[1,2] 冀丽爽 郭星[2] 陈婷[2] 马放[1] 陈忠林[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]辽宁工业大学化学与环境工程学院,辽宁锦州121001

出　　处：《中国沼气》2017年第1期93-99,共7页China Biogas

基　　金：中国博士后科学基金(2014M561361);辽宁省博士科研启动基金项目(201501124);黑龙江垦区"十三五"规划项目(5021609)

摘　　要：文章针对寒地典型沼气工程代表的海林沼气发酵系统的"牛-沼气-玉米"农业循环经济模式的运行特性,应用能流理论分析方法,通过能流循环指数、能量产投比、光能利用率等指标,对该系统能量的去向、能量流入与流出进行了系统分析。经计算该系统能流循环指数0.9709,表明海林农场以沼气为核心的农业循环经济可持续发展能力强,自我维持循环能力水平较高;但是,由于该模式养殖子系统的能量产投比较低,造成整个循环系统的产投比仅为0.0432,反映该系统的末端产品能量高附加值转化水平低;系统有机能与无机能之比值为34.128,表明整个系统属有机生态模式。综合各项指标经分析,该农业循环经济系统有利于该地区生态农业的发展,符合可持续发展要求,是一种适用于北方寒区推广的典型循环农业发展模式。Taking the Hailin biogas project as an example,the energy flow direction,and the energy input and output of＂cattle-biogas-corn＂agricultural circular system were analyzed based on energy flow theory,energy circulation index,energy input-output ratio,and the solar energy utilization rate. The results showed that the＂cattle-biogas-corn＂mode was beneficial to the development of ecological agriculture and conformed to the requirements of sustainable development. According to the calculation,the circulation index of energy flow was 0. 9709,which showed a high sustainable development ability and self-maintaining ability. Yet,energy input-output ratio of the entire circulation system was only 0. 0432 because of the energy input-output ratio of the breeding subsystem was very low,showing that the system＇terminal product was at the low level for high value energy transfer. The organic energy and inorganic energy ratio of the system was 34. 128,showing that the whole system was in an organic ecological pattern.

关 键 词：沼气能源 “牛-沼气-玉米”循环系统 能流分析 综合评价 

分 类 号：S216.4[农业科学—农业机械化工程]