草莓大棚内沼气池的生态效益分析  

Ecological Benefit Analysis of Applying Biogas Pool in Strawberry Greenhouse

作　　者：张昌爱[1] 沈玉文[1] 林海涛[1] 张玉凤[1] 王江涛[1] 

机构地区：[1]山东省农业科学院农业资源与环境研究所,山东济南250100

出　　处：《山东农业科学》2012年第10期84-88,共5页Shandong Agricultural Sciences

基　　金：国家科技支撑计划项目(2008BADC4B06);国家星火项目(2007EA740001)

摘　　要：沼气池建在大棚内可增加沼气池的冬季产气量,沼气燃烧可为作物提供CO2气肥、光照及热量,沼渣、沼液亦可作为肥料和植保产品施用,具有较好的综合效益。为了弄清沼气池在大棚内的生态效益,本文对沼气池在草莓大棚内应用的经济效益、碳减排效果及对土壤质量的影响做了估算和分析。结果显示,沼气池建在大棚内可增加经济收入5 436元,而沼气池建在大棚外亦可增加经济收入1 126元,其固态投资收益率分别为187.19%和42.65%;将沼气池(10 m3)建在大棚外,可减少温室气体排放0.164 t CO2当量,而将沼气池建在大棚内每年可减少温室气体排放0.423 t CO2当量;沼气池在草莓大棚内应用后可有效增加土壤氮磷钾含量,降低土壤容重,提高土壤质量。与建在棚外相比,将沼气池建在棚内可获得更好的综合效益。The biogas pools would produce more methane if they are constructed in greenhouse in winter. Burned biogas can provide CO2 fertilizer, illumination and heat; biogas slurry and residues can be used as fer- tilizer or plant protection materials, so biogas pool constructed in greenhouse can generate better comprehen- sive benefits. In order to make clear the ecological benefits of applying biogas pool in strawberry greenhouse, the economic benefit, carbon emission reduction and its effect on soil quality were analyzed and estimated. The results showed that the income increased by 5 436 Yuan RMB with the biogas pool constructed in green- house, and also could increase by 1 126 Yuan when constructed outside greenhouse. Their rates of return on investment were 187.19% and 42.65 % respectively. The carbon emission reduction amount decreased by 0. 164 ton and 0.423 ton CO2 equivalent with biogas pool constructed outside and in greenhouse respectively. The application of biogas pool in strawberry greenhouse could increase the contents of ni and potassium in soil, decrease the soil bulk density, and improve the soil quality. In all, higher phosphorus comprehensive benefit could be obtained with the biogas pool constructed in greenhouse than that constructed outside

关 键 词：沼气池 大棚 经济效益 碳减排 土壤质量 

分 类 号：S668.4[农业科学—果树学] TK6[农业科学—园艺学]