Idioma:

Effect of N Fertilization Pattern on Rice Yield, N Use Efficiency and Fertilizer-N Fate in the Yangtze River Basin, China

Liu, Xiaowei ; Wang, Huoyan ; Zhou, Jianmin ; Hu, Fengqin ; Zhu, Dejin ; Chen, Zhaoming ; Liu, Yongzhe Pardha-Saradhi, P.

PloS one, 2016-11, Vol.11 (11), p.e0166002-e0166002 [Periódico revisado por pares]

United States: Public Library of Science

Texto completo disponível

Citações Citado por

Enviar para

Título:
Effect of N Fertilization Pattern on Rice Yield, N Use Efficiency and Fertilizer-N Fate in the Yangtze River Basin, China
Autor: Liu, Xiaowei ; Wang, Huoyan ; Zhou, Jianmin ; Hu, Fengqin ; Zhu, Dejin ; Chen, Zhaoming ; Liu, Yongzhe
Pardha-Saradhi, P.
Assuntos: Agricultural practices ; Agricultural production ; Agriculture ; Agrochemicals ; Biology and Life Sciences ; Biomass ; China ; Chlorophyll ; Crop yield ; Efficiency ; Fertilization ; Fertilizers ; Freshwater ; Jointing ; Laboratories ; Methods ; Nitrogen ; Nutrient content ; Nutrient uptake ; Oryza ; Oryza sativa ; People and Places ; Physical Sciences ; Research and Analysis Methods ; Rice ; Rice yield ; River basins ; Rivers ; Sandy soils ; Science ; Soil - chemistry ; Soil sciences ; Sustainable agriculture ; Technology application ; Urea ; Weather
É parte de: PloS one, 2016-11, Vol.11 (11), p.e0166002-e0166002
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Competing Interests: The authors have declared that no competing interests exist.
Conceptualization: XWL HYW.Formal analysis: XWL.Funding acquisition: HYW JMZ.Investigation: XWL DJZ YZL.Methodology: XWL HYW.Project administration: XWL HYW DJZ.Writing – original draft: XWL.Writing – review & editing: XWL HYW FQH ZMC.
Descrição: High N loss and low N use efficiency (NUE), caused by high N fertilizer inputs and inappropriate fertilization patterns, have become important issues in the rice (Oryza sativa L.) growing regions of southern China. Changing current farmer fertilizer practice (FFP, 225 kg ha-1 N as three applications, 40% as basal fertilizer, 30% as tillering fertilizer and 30% as jointing fertilizer) to one-time root-zone fertilization (RZF, 225 kg ha-1 N applied once into 10 cm deep holes positioned 5 cm from the rice root as basal fertilizer) will address this problem. A two-year field experiment covering two rice growing regions was conducted to investigate the effect of urea one-time RZF on rice growth, nutrient uptake, and NUE. The highest NH4+-N content for RZF at fertilizer point at 30 d and 60 d after fertilization were 861.8 and 369.9 mg kg-1 higher than FFP, respectively. Rice yield and total N accumulation of RZF increased by 4.3-44.9% and 12.7-111.2% compared to FFP, respectively. RZF reduced fertilizer-N loss by 56.3-81.9% compared to FFP. The NUEs following RZF (mean of 65.8% for the difference method and 43.7% for the labelled method) were significantly higher than FFP (mean of 35.7% for the difference method and 14.4% for the labelled method). In conclusion, RZF maintained substantial levels of fertilizer-N in the root-zone, which led to enhanced rice biomass and N uptake during the early growth stages, increased fertilizer-N residual levels and reduced fertilizer-N loss at harvest. RZF produced a higher yield increment and showed an increased capacity to resist environmental threats than FFP in sandy soils. Therefore, adopting suitable fertilizer patterns plays a key role in enhancing agricultural benefits.
Editor: United States: Public Library of Science
Idioma: Inglês

Links

View this record in MEDLINE/PubMed

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Effect of N Fertilization Pattern on Rice Yield, N Use Efficiency and Fertilizer-N Fate in the Yangtze River Basin, China

Liu, Xiaowei ; Wang, Huoyan ; Zhou, Jianmin ; Hu, Fengqin ; Zhu, Dejin ; Chen, Zhaoming ; Liu, Yongzhe Pardha-Saradhi, P.

United States: Public Library of Science

Buscando em bases de dados remotas. Favor aguardar.