Consistent effects of nitrogen fertilization on soil bacterial communities in black soils for two crop seasons in China.

ABSTRACT: Long-term use of inorganic nitrogen (N) fertilization has greatly influenced the bacterial community in black soil of northeast China. It is unclear how N affects the bacterial community in two successive crop seasons in the same field for this soil type. We sampled soils from a long-term fertilizer experimental field in Harbin city with three N gradients. We applied sequencing and quantitative PCR targeting at the 16S rRNA gene to examine shifts in bacterial communities and test consistent shifts and driving-factors bacterial responses to elevated N additions. N addition decreased soil pH and bacterial 16S rDNA copy numbers, and increased soil N and crop yield. N addition consistently decreased bacterial diversity and altered bacterial community composition, by increasing the relative abu

SUBMITTER: Zhou J 

PROVIDER: S-EPMC5468298 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature