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基于LCA分析的间作小麦土壤酸化气体排放 预览

Emission of Acidified Gas from Intercropped Wheat Field Based on LCA Analysis
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摘要 为综合分析小麦蚕豆间作的环境酸化效应以及产量优势,通过2个试验点为期2年(A和B试验点:2014—2016年)的田间定位试验,分析比较了小麦蚕豆间作产量以及基于生命周期评价(Life cycle assessment,LCA)的能源消耗、环境酸化等指标的差异。结果表明,两个试验点的间作小麦产量均显著高于单作,平均增幅达到了22.04%,土地当量比(LER)均大于1,表现出明显的间作优势。与单作小麦相比,间作小麦的能源消耗和环境酸化影响指数较单作小麦分别平均减少了18.59%和17.45%,硫氧化物(SOX)、氨气(NH3)和氮氧化物(NOX)酸化气体分别平均减少了17.42%、17.68%和17.82%,间作小麦的能源消耗和环境酸化的环境影响减缓潜力平均增加了18.96%和17.45%。表明小麦蚕豆间作可显著提高产量,减少酸化气体排放,具有明显的间作优势。 This study was to comprehensively analyze effects of wheat and faba bean intercropping in wheat fields on environmental acidification and yield of the crops. Two two-year field experiments,(A and B), were carried out and analysis of the results of the experiments done for effects of wheat and faba bean intercropping on crop yield, energy consumption and environmental acidification based on LCA (life cycle assessment) by comparison. Results showed that in the two experimental fields, intercropped wheat was significantly of 22.04% higher than mono-cropped one in yield on average with land equivalent ratio (LER) being higher than 1, showing obvious intercropping advantage. Compared with monocropped wheat, intercropped wheat decreased by 18.59% and 17.45% in energy consumption and environmental acidification index, respectively, and by 17.42%, 17.68% and 17.82% in emission of SOX, NH3 and NOX, respectively, and hence was 18.96% and 17.45% higher in potential of mitigating the environmental impact of energy consumption and environmental acidification of wheat cultivation. In conclusion, wheat and faba bean intercropping can significantly increase yield of the wheat and reduce emission of acidified gases, which are obvious intercropping advantages.
作者 任家兵 汤利 耿川雄 肖靖秀 郑毅 REN Jiabing;TANG Li;GENG Chuanxiong;XIAO Jingxiu;ZHENG Yi(College of Resources and Environmental Science,Yunnan Agricultural University,Kunming 650201,China;Institute of Agricultural Environment and Resources,Yunnan Academy of Agricultural Sciences,Kunming 650201,China)
出处 《土壤学报》 CAS CSCD 北大核心 2019年第5期1259-1268,共10页 Acta Pedologica Sinica
基金 国家自然科学基金项目(41361065,31760615) 云南省科技计划重点项目(2015FA022)资助.
关键词 小麦蚕豆间作 小麦产量 环境酸化潜值 酸化气体 LCA分析 Wheat and faba bean intercropped Wheat yield Environmental acidification potential Acidified gas emission Life cycle assessment (LCA)
作者简介 任家兵(1986-),男,河南沁阳人,博士研究生,主要研究养分资源高效利用。E-mail:415685073@qq.com;通讯作者:汤利,E-mail:ltang@ynau.edu.cn.
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