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应用生态学报 ›› 2019, Vol. 30 ›› Issue (4): 1303-1311.doi: 10.13287/j.1001-9332.201904.030

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不同氮肥对东北春玉米农田温室气体周年排放的影响

姚凡云1, 王立春1, 多馨曲1,2, 刘志铭1, 吕艳杰1, 曹玉军1, 魏雯雯1, 王永军1*   

  1. 1吉林省农业科学院农业资源与环境研究所/玉米国家工程实验室, 长春 130033;
    2延边大学, 吉林延吉 133002
  • 收稿日期:2018-12-26 出版日期:2019-04-20 发布日期:2019-04-20
  • 通讯作者: * E-mail: yjwang2004@126.com
  • 作者简介:姚凡云,女,1985年生,博士. 主要从事玉米栽培生理生态研究. E-mail: yaofanyun@163.com
  • 基金资助:
    本文由国家重点研发计划项目(2017YFD0300303)、国家玉米产业技术体系项目(CARS-02-16)和吉林省农业科技创新工程项目(CXGC2017JQ006,C6215000209,C7208000109)资助

Effects of different nitrogen fertilizers on annual emissions of greenhouse gas from maize field in Northeast China

YAO Fan-yun1, WANG Li-chun1, DUO Xin-qu1,2, LIU Zhi-ming1, LYU Yan-jie1, CAO Yu-jun1, WEI Wen-wen1, WANG Yong-jun1*   

  1. 1Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/State Engineering Laboratory of Maize, Changchun 130033, China;
    2Yanbian University, Yanji 133002, Jilin, China
  • Received:2018-12-26 Online:2019-04-20 Published:2019-04-20
  • Contact: * E-mail: yjwang2004@126.com
  • Supported by:
    This work was supported by the National Key Research and Development Program of China (2017YFD0300303), the National Modern Maize Industry Technology System of China (CARS-02-16) and the Jilin Province Agricultural Science and Technology Innovation Project (CXGC2017JQ006, C6215000209, C7208000109).

摘要: 为探明不同氮肥条件下高纬度农田土壤的温室气体排放特性,采用静态箱-气相色谱法研究了常规施氮(CN)、施用缓释肥(SLN)、尿素添加硝化抑制剂和脲酶抑制剂(NIUI)、不施氮肥(NN)对东北春玉米农田土壤温室气体排放的影响.结果表明: CN、SLN和NIUI处理产量分别为9618、9376和9645 kg·hm-2.与CN处理相比,SLN促进了玉米生长季土壤N2O的排放,降低了非生长季土壤N2O的排放;NIUI处理N2O累积排放量比CN降低了39.0%;各处理土壤CO2周年累积排放通量无显著差异;东北春玉米田是大气中CH4的弱汇,NIUI处理较CN促进了玉米生长季土壤对CH4的吸收.综上,尿素添加脲酶抑制剂和硝化抑制剂可以在实现玉米高产的同时有效减少土壤温室气体排放.

关键词: 氮肥, 温室气体, 排放通量, 东北玉米田, 周年

Abstract: A field experiment was conducted to investigate the greenhouse gas emission at high latitude farmland in Northeast China. We monitored the greenhouse gas emission using the static chamber-gas chromatography method. Four nitrogen (N) fertilizers were used: conventional N fertilization (CN), slow release fertilizer (SLN), urea plus nitrification inhibitor and urease inhibitor (NIUI), and no nitrogen fertilizer (NN). The results showed that the yields under CN, SLN and NIUI treatments were 9618, 9376 and 9645 kg·hm-2, respectively. Compared with CN treatment, SLN increased soil N2O emission in the growing season and decreased N2O emission in the non-growing season. The cumulative N2O emission flux of NIUI treatment was 39.0% lower than that of CN. There were no significant differences in the annual cumulative CO2 emission flux among the treatments. The spring maize field in Northeast China was a weak CH4 sink. NIUI treatment promoted soil CH4 absorption in maize growing season compared with CN treatment. In summary, urea plus nitrification inhibitor and urease inhibitor could significantly reduce soil greenhouse gas emissions with high yield of maize.

Key words: annual, maize field in Northeast China, greenhouse gas, emission fluxes, nitrogen fertilizer