不同种植模式对黄壤烟田 N2O排放的影响
作者:
作者单位:

(1.中国农业科学院农业资源与农业区划研究所,北京 100081;2.烟草行业生态环境与烟叶质量重点实验室,北京 100081;3.贵州省烟草科学研究院,贵州 贵阳 550000)

作者简介:

蒋雨洲(1986-),男,陕西人,助理研究员,博士,主要从事养分管理研究。E-mail:417313576@qq.com。

通讯作者:

基金项目:

基金项目:中国烟草总公司科技项目“烟草—土壤系统碳氮循环与生态价值评价”(110201402015);中国烟草总公司贵州省公司科技项目“贵州植烟土壤保育与改良技术集成与示范”(中烟黔科[2017]11号,合同号201703)。


Effect of different planting patterns on N2O emissions characteristics in tobacco yellow soil
Author:
Affiliation:

(1.Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing100081;2.Key Laboratory of Eco -environment and Leaf TobaccoQuality,Beijing100081;3. Tobacco Science Instituteof GuizhouProvince,Guiyang Guizhou550000)

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    为探明烤烟 -玉米轮作和烤烟连作在黄壤烟田 N 2O排放变化特征,并探明不同环境因子对其排放通量的影响。2016年于贵州省烟草科学研究院龙岗长期养分定位试验站,采用静态箱—气相色谱法测定了 N 2O含量,试验共设 3个处理,不施任何肥料 +轮作(CK);常规施肥 +轮作(CR);常规施肥 +连作(CC)。试验结果表明,烤烟生长季,各施肥处理的黄壤烟田 N 2O排放均有 2次高峰,峰值主要出现在烤烟施基肥后 3~ 5 d和追肥后1~ 7 d,其中施基肥后 N 2O排放累积量占整个生长季 N 2O排放累积量的比例较高,范围为 16.26%~ 18.30%。各个处理 N 2O平均排放通量的顺序是CC>CR>CK,其平均排放通量分别为0.044、0.022和 0.013 mg·m -2·h-1;相同施肥量条件下,烤烟连作较轮作 N 2O排放总量提高了 2倍,烤烟生物量降低了 30.01%。相关分析表明,施肥 +轮作的烟田 N 2O排放通量与土壤硝态氮含量有关( P<0.05)。黄壤烟田轮作后显著降低了土壤 N 2O排放量,合理轮作是降低黄壤烟田温室气体 N 2O排放的重要途径。

    Abstract:

    This experiment was carried out to study the effects of crop rotation and continuous cropping to N2O emissioncharacteristics in yellow soil tobacco fields.N 2O emission flux was determined using a static chamber-gas chromatograph technique on a long-term test station in Longgang Town Tobacco Science Institute of GuizhouProvince.The experiment wasset up with threetreatments,including no fertilizer + crop rotation forcomparison(CK);inorganic fertilizer + crop rotation(CR);inorganic fertilizer + continuouscropping(CC).The results showed that tobacco growth season of N 2O emissionpeaks was appeared at 3~ 5 d after basalfertilizer,and 1~ 7 d after topfertilizer,respectively.After basal fertilizer the total cumulative N2O emissions accounted for high percentage(16.26%~18.30%)of the whole growingseason.The order of the average N2O emission flux among treatments was CC>CR>CK in the tobacco growing season,which was 0.044 and 0.022 and 0.013 mg·m-2·h-1,respectively.Under the condition of same fertilization,compared with rotation,the N 2Oemission of continuous cropping increased 2times,and tobacco biomass decreased by30.01%.Correlation analysis showed that N2O emission flux of inorganic fertilizer + crop rotation was mainly associated with soil nitrate nitrogen content in Yellow-soil tobaccofields( P<0.05).N2O emission was relatively high at tobacco continuous cropping in yellow soil tobaccofields. Rotation was the main cause significantly decreased of N2O emission in tobaccogrowth,reasonable crop rotation was the best way to reduce N2O emissions in yellow soil tobaccofields.

    参考文献
    相似文献
    引证文献
引用本文

蒋雨洲,刘青丽,李志宏,张云贵,邹焱,朱经纬,石俊雄.不同种植模式对黄壤烟田 N2O排放的影响[J].中国土壤与肥料,2020,(4):26-31.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
历史
  • 收稿日期:2019-06-12
  • 最后修改日期:
  • 录用日期:2019-10-13
  • 在线发布日期: 2020-09-14