铁炉渣施加对稻田不同途径氧化亚氮通量的影响  

Effect of Iron Slag Adding on Nitrous Oxide Fluxes of Different Pathways in Paddy Fields

作　　者：林芳[1] 王纯[1,2] 王维奇[1,2] 林德华[1,2] 

机构地区：[1]福建师范大学地理科学学院,福建福州350007 [2]福建师范大学大学亚热带湿地研究中心,福建福州350007

出　　处：《实验室研究与探索》2014年第8期26-28,52,共4页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(31000209);福建省自然科学基金(2014J01119);福建省公益类研究所专项(2011R1037-5);福建省教育厅资助项目(JB11030);福建师范大学优秀青年骨干教师培养基金(fjsdky2012007)

摘　　要：为了阐明铁炉渣施加对稻田不同途径氧化亚氮通量的影响,采用静态箱-气相色谱法对对照、2、4、8 Mg/hm^2铁炉渣施加后稻田不同途径氧化亚氮通量进行了测定与分析.研究结果表明：观测期内,对照、2、4、8 Mg/hm^2铁炉渣施加后植物体传输氧化亚氮通量为-0.020 4～0.033 4、-0.038 9～0.052 3、-0.062 3 ～0.094 4、-0.035 1～0.080 2 mg/（m^2·h）,平均值分别为0.005 9、-0.013 9、0.017 7、-0.000 1 mg/（m^2·h）.扩散传输为-0.032 3～ 0.069 9、-0.015 5～0.037 2、-0.023 1～0.067 1、-0.035 2～0.032 4,平均值分别为0.020 6、-0.003 1、0.005 3、-0.001 6 mg/（m^2·h）.气泡传输为-0.073 6～ 0.033 4、-0.025 7～0.084 2、-0.045 6～0.068 9、-0.080 1～0.0802 mg/（m^2·h）,平均值分别为-0.014 7、0.000 2、0.012 5、-0.011 7 mg/（m^2·h）.铁炉渣的施加对不同途径氧化亚氮通量的影响并不一致.Global warming is a critical issue today.The increment of greenhouse gas emission is important cause for the change,nitrous oxide is one of the main greenhouse gas.It is necessary to carry out research on its emission characteristics and reduction methods.In order to clarify the effect of iron slag adding on nitrous oxide fluxes of different pathways in paddy field,the nitrous oxide fluxes of different pathways of control,2,4,and 8 mg/hm^2 iron slag application were determined by static chamber gas chromatogram.The results showed：plant pathway nitrous oxide fluxes were-0.0204～0.0334,-0.0389～0.0523,-0.0623～0.0944,-0.035 1～0.0802 mg/（m^2 · h）,and the averaged values were 0.005 9,-0.013 9,0.017 7,-0.000 1 mg/（m^2 · h）.Diffusion pathway nitrous fluxes were -0.0323～0.069 9,-0.015 5 ～0.037 2,-0.023 1 ～0.067 1,-0.035 2 ～0.032 4 mg/（m^2 · h）,and the averaged values were 0.020 6,-0.003 1,0.005 3,-0.001 6 mg/（m^2 · h）.Bubble pathway nitrous oxide fluxes were-0.073 6～0.0334,-0.0257～0.0842,-0.0456～0.0689,-0.080 1 ～0.0802mg/（m^2 · h）,and the averaged values were-0.0147,0.0002,0.012 5,-0.011 7 mg/（m^2 · h）.The effects of iron slag addition on nitrous oxide fluxes of different pathways were different in the same patterns.

关 键 词：铁炉渣 氧化亚氮 途径 稻田 

分 类 号：X144[环境科学与工程—环境科学] Q143[生物学—生态学]