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作 者:杨翼婷 段智源 Yiting Yang;Zhiyuan Duan(College of Resources,Environment,and Chemistry,Chuxiong Normal University,Chuxiong,Yunnan 675000)
机构地区:[1]楚雄师范学院资源环境与化学学院,云南楚雄675000
出 处:《教育教学研究前沿》2024年第8期57-59,共3页Frontiers of Education and Teaching Research
摘 要:本研究采用生命周期评价方法对楚雄市苍岭镇玉米种植过程的温室气体进行综合评估,结果表明,苍岭镇玉米种植排放的温室气体构成占比排序为:化肥施用>农机能耗>化肥生产>农药施用>玉米种子,分别占总排放量的38.15%、33.49%、23.55%、3.28%、1.53%,化肥的投入使用造成的温室排放最多,占排放量的61.7%,玉米种植单位面积温室气体排放量为3795.23kgCO_(2)e/hm2,单位玉米产量温室气体排放量为0.37kgCO_(2)e/kg,单位玉米净产值温室气体排放量为3.30kgCO_(2)e/元。建议研究区通过优化化肥的使用、加大玉米的复种指数等措施来控制温室气体的排放量。This study used the life cycle assessment method to comprehensively evaluate the greenhouse gas emissions during the corn plant⁃ing process in Cangling Town,Chuxiong City.The results showed that the proportion of greenhouse gas emissions from corn planting in Can⁃gling Town was ranked as follows:fertilizer application>agricultural machinery energy consumption>fertilizer production>pesticide applica⁃tion>corn seeds,accounting for 38.15%,33.49%,23.55%,3.28%,and 1.53%of the total emissions,respectively.The use of fertilizers caused the highest greenhouse gas emissions,accounting for 61.7%of the emissions.The greenhouse gas emissions per unit area of corn planting were 3795.23kgCO_(2)e/hm2,the greenhouse gas emissions per unit of corn yield were 0.37kgCO_(2)e/kg,and the greenhouse gas emis⁃sions per unit of corn net output value were 3.30kgCO_(2)e/yuan.It is suggested that the research area control greenhouse gas emissions by opti⁃mizing the use of fertilizers and increasing the multiple cropping index of corn.
分 类 号:X51[环境科学与工程—环境工程]
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