四株植物根际促生菌对农田土壤N2O排放的影响
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金(31972503,4 1771291);江苏省大学生创新创业训练计划(XJDC202110300203)


Effects of four plant growth-promoting rhizo bacteria on N2O emission from farmland soil
Author:
Affiliation:

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
  • |
  • 文章评论
    摘要:

    农田土壤是温室气体氧化亚氮(N2O)最重要的人为排放源之一.本文以四株植物根际促生菌:白色芽孢杆菌Bacillus albus Lv5A、枯草芽孢杆菌枯草亚种Bacillus subtilis sp.subtilis NRCB002、施氏假单胞菌Pseudomonas stutzeri NRCB010和暹罗芽孢杆菌Bacillus siamensis NRCB026为研究对象,采用温室盆栽试验、土壤微宇宙试验及田间原位试验等方法,探究接种植物根际促生菌对农田土壤N2O排放的影响.结果表明,在温室盆栽条件下,接种四株植物根际促生菌的土壤N2O累积排放量从高到低依次为NRCB002> Lv5A> NRCB026> NRCB010,与未接种的对照相比分别减少了2.3%、33.1%、34.2%和40.0%.选择NRCB010和NRCB026菌株进一步开展土壤微宇宙试验和田间原位试验.与未接种的对照相比,在土壤微宇宙条件下接种NRCB010和NRCB026的土壤N2O累积排放量分别减少了21%和48%;在田间原位条件下,接种NRCB010和NRCB026的土壤N2O累积排放量分别减少了44%和73%.总之,接种植物根际促生菌NRCB010和NRCB026能有效减少农田土壤N2O的排放.研究结果将为减少农田土壤N2O排放提供重要科学依据,也将为发展具有促生和减排效应的生物肥料提供实际指导.

    Abstract:

    Farmland soil is one of the most important anthropogenic sources of nitrous oxide (N2O).In this paper,four plant growth-promoting rhizo bacteria were used as the candidate strains,namely Bacillus albus Lv5A,Bacillus subtilis sp.subtilis NRCB002,Pseudomonas stutzeri NRCB010,and Bacillus siamensis NRCB026.The greenhouse pot experiment,soil microcosm experiment,and field plot experiment were established to explore the effect of these growth-promoting rhizo bacteria on N2O emission from farmland soil.The results showed that cumulative N2O emissions from tested soils were NRCB002 > Lv5A > NRCB026 > NRCB010 after the inoculation with these four growth-promoting rhizo bacteria in the greenhouse pot experiment.The cumulative N2O emissions were decreased by 2.3%,33.1%,34.2% and 40% after the inoculation with these four strains compared with that from the non-inoculated control.Then two strains of NRCB010 and NRCB026 were chosen for further soil microcosm experiment and field experiment.The inoculation with NRCB010 decreased the cumulative N2O emissions by 21% and 44% in soil microcosm and field plot experiment,respectively;while the inoculation with NRCB026 decreased the cumulative N2O emissions by 48% and 73% in soil microcosm and field plot experiments,respectively.In conclusion,plant growth-promoting rhizo bacteria NRCB010 and NRCB026 can effectively mitigate N2O emission from farmland soil.Our results provides critical scientific basis for N2O mitigation in farmland soil and important practical guidance for development of novel biofertilizer with both plant growth-promoting and greenhouse gas mitigating effects.

    参考文献
    相似文献
    引证文献
引用本文

申卫收,杨思琪,张欢欢,李庆,王铭科,潘钰璟,徐德红,高南.四株植物根际促生菌对农田土壤N2O排放的影响[J].南京信息工程大学学报(自然科学版),2022,14(1):32-39
SHEN Weishou, YANG Siqi, ZHANG Huanhuan, LI Qing, WANG Mingke, PAN Yujing, XU Dehong, GAO Nan. Effects of four plant growth-promoting rhizo bacteria on N2O emission from farmland soil[J]. Journal of Nanjing University of Information Science & Technology, 2022,14(1):32-39

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2022-01-09
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2022-04-11
  • 出版日期:

地址:江苏省南京市宁六路219号    邮编:210044

联系电话:025-58731025    E-mail:nxdxb@nuist.edu.cn

南京信息工程大学学报 ® 2024 版权所有  技术支持:北京勤云科技发展有限公司