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Table. 1.

Table. 1.

Impacts of tillage treatments on rhizosphere soil N transformation rates in double-cropping rice field.

Items Treatments
CT RT NT RTO
GMR (mg N kg-1 d-1) 1.81 ± 0.05a 1.67 ± 0.05b 1.55 ± 0.05b 1.32 ± 0.03c
GACR (mg N kg-1 d-1) 2.62 ± 0.07a 2.44 ± 0.07b 2.23 ± 0.06c 2.02 ± 0.06d
GNR (mg N kg-1 d-1) 0.82 ± 0.02a 0.63 ± 0.02b 0.43 ± 0.02c 0.24 ± 0.01d
GNCR (mg N kg-1 d-1) 0.57 ± 0.02a 0.44 ± 0.01b 0.32 ± 0.01c 0.21 ± 0.01d
NMR (mg N kg-1 d-1) 0.58 ± 0.02a 0.47 ± 0.02b 0.30 ± 0.01c 0.12 ± 0.01d
NNR (mg N kg-1 d-1) 0.62 ± 0.02a 0.52 ± 0.02b 0.35 ± 0.01c 0.15 ± 0.01d
RR (mg N kg-1 d-1) 7.17 ± 0.18a 7.02 ± 0.20a 6.34 ± 0.21b 4.17 ± 0.12c

RT: rotary tillage with crop straw input; CT: conventional tillage with crop straw input; NT: no-tillage with crop straw returning;

RTO: rotary tillage with all crop straw removed as a control.

GACR: gross ammonium consumption rate; GMR: gross N mineralization rate; GNCR: gross nitrate consumption rate; GNR: gross nitrification rate; NNR: net nitrification rate; NMR: net mineralization rate; RR: respiration rate.

Values were presented as mean ± SE.

Different lowercase letters among different tillage treatments indicated significant difference at 0.05 levels.

The same as below.

J. Microbiol. Biotechnol. 2024;34:1464~1474 https://doi.org/10.4014/jmb.2401.01032
© J. Microbiol. Biotechnol.