农业资源与环境学报2024，Vol.41Issue(4)：918-925,8.DOI:10.13254/j.jare.2023.0555
基于生命周期评价的东北地区覆膜水稻环境影响分析
Environmental impact assessment of the life cycle of rice cultivation by plastic film mulching in northeast China
摘要
Abstract
To explore the resource consumption and environmental impacts of the life cycle process of mulched rice,a life cycle assessment of rice cultivation by plastic film mulching in northeast China was carried out based on two years of experimental from 2021 to 2022.The results showed that the environmental impact potential of PE film-covered dry-directed rice was meager and more environmental friendly when only resource consumption,climate change and environmental acidification were considered.The environmental impact potentials corresponding to the six environmental impact indicators of energy consumption,water consumption,climate change,environmental acidification,eutrophication,and ecotoxicity of PE film-covered conventionally irrigated rice in the northeast region were found to be 14 046.40 MJ,957 082.47 kg,1 663.15 kg CO2-eq,8.70 kg SO2-eq,1.84 kg PO 3-4-eq,and 57.05 kg 1,4-DCB-eq.The environmental impact potentials corresponding to these six environmental impact indicators for PE film-covered dry-directed rice in the northeast region are thereby detected to be 11 990.32 MJ,312 102.92 kg,1 071.41 kg CO2-eq,6.85 kg SO2-eq,1.88 kg PO3-4-eq,and 73.75 kg 1,4-DCB-eq,respectively.The main causes of resource depletion and climate change are recognized as the production and use of nitrogen fertilizers and fuel oil,in addition to the production of mulch films and drip irrigation equipment,which also have a large environmental impact.Consequently,the improvement of agricultural production technology and the reduction of nitrogen fertilizer use are conducive to reduce the environmental impact of the agricultural production process.The study shows that the key to clean rice production lies in the optimization of the production process of agricultural products and the rational application of nitrogen fertilizer.And among the two mulched rice cultivation methods,mulched dry-directed rice causes lower environmental impacts and is proved to be more suitable for China's approach to green and low-carbon agriculture development.关键词
东北地区/生命周期评价/覆膜水稻/环境影响Key words
northeast region/life cycle assessment/rice cultivation by plastic film mulching/environmental impact分类
农业科技引用本文复制引用
王玉,何文清,靳拓,赵梓君,崔吉晓,刘勤..基于生命周期评价的东北地区覆膜水稻环境影响分析[J].农业资源与环境学报,2024,41(4):918-925,8.基金项目
国家重点研发计划项目(2021YFD1700700) The National Key Research and Development Program of China(2021YFD1700700) （2021YFD1700700）
