PMID- 32688003
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20200915
LR  - 20200915
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 744
DP  - 2020 Nov 20
TI  - Nitrogen fertilizer application in the rice-growing season can stimulate methane 
      emissions during the subsequent flooded fallow period.
PG  - 140632
LID - S0048-9697(20)34154-1 [pii]
LID - 10.1016/j.scitotenv.2020.140632 [doi]
AB  - Winter-flooded rice paddy field (FR), characterized by water conserved in the 
      field during the fallow period, is a typical cropping system in southwest China, 
      leading to considerable methane (CH(4)) emissions. The effect of nitrogen (N) 
      fertilization on CH(4) emissions during rice-growing seasons is well studied in 
      FR, further studies covering N fertilizer applied in the rice-growing seasons 
      affects CH(4) emissions during the subsequent fallow period is needed. Therefore, 
      a field experiment was conducted in an FR of Sichuan province, China, with 
      conventional N fertilized (CN) and N unfertilized (NN) treatments. The cumulative 
      CH(4) emission from CN treatment during the rice-growing season and the 
      subsequent fallow period was 389 +/- 29.4 and 158 +/- 31.2 kg C ha(-1), which were 
      increased by 29.5% and 395% in comparison with the NN treatment, indicting N 
      applied during the rice growing-season significantly facilitated CH(4) emission 
      during the subsequent fallow period. During the rice-growing season, higher CH(4) 
      emission from CN treatment could be attributed to elevated soil dissolved organic 
      carbon (DOC) content that might have provided sufficient substrates for CH(4) 
      production. During the fallow period, as compared to NN treatment, higher CH(4) 
      emissions from CN treatment could be explained by greater linear regression 
      slopes between CH(4) fluxes, soil temperature and DOC to dissolved inorganic N 
      (DIN) (DOC/DIN) ratio. Moreover, the structural equation model (SEM) described 
      that the soil temperature exhibited the most significant effects on CH(4) 
      emissions for both treatments during the rice-growing season and subsequent 
      fallow period. These findings are a major step forward to showing that N 
      fertilizer applied in the rice-growing season could also affect CH(4) emission 
      during the subsequent fallow period, accompanying other soil parameters 
      controlling CH(4) emission.
CI  - Copyright (c) 2020 Elsevier B.V. All rights reserved.
FAU - Xu, Peng
AU  - Xu P
AD  - Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of the 
      Yangtze River), Ministry of Agriculture, College of Resource and Environment, 
      Huazhong Agricultural University, Wuhan 430070, China.
FAU - Zhou, Wei
AU  - Zhou W
AD  - Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of the 
      Yangtze River), Ministry of Agriculture, College of Resource and Environment, 
      Huazhong Agricultural University, Wuhan 430070, China.
FAU - Jiang, Mengdie
AU  - Jiang M
AD  - Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of the 
      Yangtze River), Ministry of Agriculture, College of Resource and Environment, 
      Huazhong Agricultural University, Wuhan 430070, China.
FAU - Khan, Imran
AU  - Khan I
AD  - Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of the 
      Yangtze River), Ministry of Agriculture, College of Resource and Environment, 
      Huazhong Agricultural University, Wuhan 430070, China.
FAU - Shaaban, Muhammad
AU  - Shaaban M
AD  - Department of Soil Science, Faculty of Agricultural Science and Technology, 
      Bahauddin Zakariya University, Multan 60800, Pakistan.
FAU - Jiang, Yanbin
AU  - Jiang Y
AD  - Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of the 
      Yangtze River), Ministry of Agriculture, College of Resource and Environment, 
      Huazhong Agricultural University, Wuhan 430070, China.
FAU - Hu, Ronggui
AU  - Hu R
AD  - Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of the 
      Yangtze River), Ministry of Agriculture, College of Resource and Environment, 
      Huazhong Agricultural University, Wuhan 430070, China. Electronic address: 
      rghu@mail.hzau.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20200630
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
SB  - IM
OTO - NOTNLM
OT  - CH(4) emission
OT  - Soil dissolved carbon and nitrogen
OT  - Soil temperature
OT  - Winter-flooded rice paddy field
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2020/07/21 06:00
MHDA- 2020/07/21 06:01
CRDT- 2020/07/21 06:00
PHST- 2020/04/09 00:00 [received]
PHST- 2020/06/12 00:00 [revised]
PHST- 2020/06/28 00:00 [accepted]
PHST- 2020/07/21 06:00 [pubmed]
PHST- 2020/07/21 06:01 [medline]
PHST- 2020/07/21 06:00 [entrez]
AID - S0048-9697(20)34154-1 [pii]
AID - 10.1016/j.scitotenv.2020.140632 [doi]
PST - ppublish
SO  - Sci Total Environ. 2020 Nov 20;744:140632. doi: 10.1016/j.scitotenv.2020.140632. 
      Epub 2020 Jun 30.