摘要
为了探讨烤烟根际土壤微生物对土壤物理特性的影响,以湘西定位试验田烤烟根际土壤为试验材料,通过盆栽试验,研究了接种烤烟根际土壤微生物后对不同时期土壤容重、田间持水量、总孔隙度及三相比等参数的影响。结果表明:接种烤烟根际土壤微生物主要对烤烟生育中后期时土壤物理特性影响较大,能降低土壤容重和固相比,提高土壤总孔隙度;接种烤烟根际土壤微生物有利于烤烟生育后期时土壤田间持水量的提高,当土壤田间持水量整体处于较高水平时(19%~20%),接种烤烟根际土壤微生物对土壤田间持水量影响较小,而当土壤田间持水量整体处于较低水平时(14%~18%),接种烤烟根际土壤微生物后能缓解土壤田间持水量降低的趋势;另外,接种烤烟根际土壤微生物对土壤液相及气相比影响较小。
In order to explore the influence of rhizosphere soil microorganisms of the flue-cured tobacco planting on soil physical characteristics, soil bulk density, field water-holding capacity(FWHC), total porosity and percentage of soil three phases in different periods were analyzed in potted experiment of Xiangxi. The results showed that inoculating rhizosphere soil microorganisms of flue-cured tobacco planting had a great influence on soil physical characteristics in the middle and later growth stage of flue-cured tobacco. The soil bulk density and percentage of solid phase were reduced and the total porosity of soil was improved after inoculating rhizosphere soil microorganisms of flue-cured tobacco planting. The inoculation of rhizosphere soil microorganisms increased the FWHC at the later growth stage of flue-cured tobacco. The influence of inoculating rhizosphere soil microorganisms on soil FWHC was lower at 19%~ 20% FWHC. And it alleviated the reduction of soil FWHC at 14%~ 18% FWHC. In addition, the percentages of liquid phase and gaseous phase were less affected by inoculating rhizosphere soil microorganisms of flue-cured tobacco planting.
作者
刘智炫
胡瑞文
刘卉
向德明
周清明
黎娟
LIU Zhi-xuan;HU Rui-wen;LIU Hui;XIANG De-ming;ZHOU Qing-ming;LI Juan(Hunan Agricultural University, Changsha 410128, China;Hunan Province International Engineering Consultant Cerner Co. Ltd,Changsha 410005, China;Xiangxi Autonomous Prefecture Branch of Hunan Provincial Tobacco Company, Jishou 416000, China)
出处
《土壤通报》
CAS
CSCD
北大核心
2019年第3期571-576,共6页
Chinese Journal of Soil Science
基金
湖南省烟草公司项目（xx16-18Aa02）,湖南省烟草公司科技项目（湘烟科[2017]170）资助
湖南省自然科学基金青年项目（2017JJ3119）
关键词
土壤微生物
容重
田间持水量
总孔隙度
三相比
Soil microorganism
Bulk density
Field water-holding capacity
Total porosity
Three-phase ratio
