Cargando…
Determining optimal mulching, planting density, and nitrogen application to increase maize grain yield and nitrogen translocation efficiency in Northwest China
BACKGROUND: The combination of mulch with N fertilizer application is a common agronomic technique used in the production of rainfed maize (Zea mays L.) to achieve higher yields under conditions of optimum planting density and adequate N supply. However, the combined effects of mulch, planting densi...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304207/ https://www.ncbi.nlm.nih.gov/pubmed/32560674 http://dx.doi.org/10.1186/s12870-020-02477-2 |
_version_ | 1783548220254715904 |
---|---|
author | Wang, Xiukang Wang, Ge Turner, Neil C. Xing, Yingying Li, Meitian Guo, Tao |
author_facet | Wang, Xiukang Wang, Ge Turner, Neil C. Xing, Yingying Li, Meitian Guo, Tao |
author_sort | Wang, Xiukang |
collection | PubMed |
description | BACKGROUND: The combination of mulch with N fertilizer application is a common agronomic technique used in the production of rainfed maize (Zea mays L.) to achieve higher yields under conditions of optimum planting density and adequate N supply. However, the combined effects of mulch, planting density, and N fertilizer application rate on plant N uptake and N translocation efficiency are not known. The objective of this study was to quantify the interaction effect of mulch, planting density, and N fertilizer application rate on maize grain yield, N uptake, N translocation, and N translocation efficiency. The experiment was arranged in a randomized complete block design with three factors (2 mulch levels × 2 planting densities × 4 N fertilizer application rates) replicated four times. RESULTS: There was a significant interaction among mulch, plant density, and N fertilizer on maize grain yield, kernel number per cob, N uptake, N translocation, and N translocation efficiency. Averaged over the 3 years of the study, total plant N uptake at silking ranged from 79 to 149 kg N ha(− 1) with no mulch and from 76 to 178 kg N ha(− 1) with mulch. The N uptake at silking in different plant organs ranked as leaf > grain > stem > cob. Averaged across all factors, the highest N translocation was observed in leaves, which was 59.4 and 88.7% higher than observed in stems and ears, respectively. The mean vegetative organ N translocation efficiency averaged over mulch, planting density, and N fertilizer application rate treatments decreased in the order of leaf > stem > cob. CONCLUSIONS: Mulch, planting density, and N fertilizer application rate not only have significant effects on improving maize grain yield and NUE, but also on N uptake, N translocation, and N translocation efficiency. Our results showed clearly that under high planting density, the combination of mulch and moderate N fertilizer application rate was the optimal strategy for increasing maize grain yield and N use efficiency. |
format | Online Article Text |
id | pubmed-7304207 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-73042072020-06-22 Determining optimal mulching, planting density, and nitrogen application to increase maize grain yield and nitrogen translocation efficiency in Northwest China Wang, Xiukang Wang, Ge Turner, Neil C. Xing, Yingying Li, Meitian Guo, Tao BMC Plant Biol Research Article BACKGROUND: The combination of mulch with N fertilizer application is a common agronomic technique used in the production of rainfed maize (Zea mays L.) to achieve higher yields under conditions of optimum planting density and adequate N supply. However, the combined effects of mulch, planting density, and N fertilizer application rate on plant N uptake and N translocation efficiency are not known. The objective of this study was to quantify the interaction effect of mulch, planting density, and N fertilizer application rate on maize grain yield, N uptake, N translocation, and N translocation efficiency. The experiment was arranged in a randomized complete block design with three factors (2 mulch levels × 2 planting densities × 4 N fertilizer application rates) replicated four times. RESULTS: There was a significant interaction among mulch, plant density, and N fertilizer on maize grain yield, kernel number per cob, N uptake, N translocation, and N translocation efficiency. Averaged over the 3 years of the study, total plant N uptake at silking ranged from 79 to 149 kg N ha(− 1) with no mulch and from 76 to 178 kg N ha(− 1) with mulch. The N uptake at silking in different plant organs ranked as leaf > grain > stem > cob. Averaged across all factors, the highest N translocation was observed in leaves, which was 59.4 and 88.7% higher than observed in stems and ears, respectively. The mean vegetative organ N translocation efficiency averaged over mulch, planting density, and N fertilizer application rate treatments decreased in the order of leaf > stem > cob. CONCLUSIONS: Mulch, planting density, and N fertilizer application rate not only have significant effects on improving maize grain yield and NUE, but also on N uptake, N translocation, and N translocation efficiency. Our results showed clearly that under high planting density, the combination of mulch and moderate N fertilizer application rate was the optimal strategy for increasing maize grain yield and N use efficiency. BioMed Central 2020-06-19 /pmc/articles/PMC7304207/ /pubmed/32560674 http://dx.doi.org/10.1186/s12870-020-02477-2 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research Article Wang, Xiukang Wang, Ge Turner, Neil C. Xing, Yingying Li, Meitian Guo, Tao Determining optimal mulching, planting density, and nitrogen application to increase maize grain yield and nitrogen translocation efficiency in Northwest China |
title | Determining optimal mulching, planting density, and nitrogen application to increase maize grain yield and nitrogen translocation efficiency in Northwest China |
title_full | Determining optimal mulching, planting density, and nitrogen application to increase maize grain yield and nitrogen translocation efficiency in Northwest China |
title_fullStr | Determining optimal mulching, planting density, and nitrogen application to increase maize grain yield and nitrogen translocation efficiency in Northwest China |
title_full_unstemmed | Determining optimal mulching, planting density, and nitrogen application to increase maize grain yield and nitrogen translocation efficiency in Northwest China |
title_short | Determining optimal mulching, planting density, and nitrogen application to increase maize grain yield and nitrogen translocation efficiency in Northwest China |
title_sort | determining optimal mulching, planting density, and nitrogen application to increase maize grain yield and nitrogen translocation efficiency in northwest china |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304207/ https://www.ncbi.nlm.nih.gov/pubmed/32560674 http://dx.doi.org/10.1186/s12870-020-02477-2 |
work_keys_str_mv | AT wangxiukang determiningoptimalmulchingplantingdensityandnitrogenapplicationtoincreasemaizegrainyieldandnitrogentranslocationefficiencyinnorthwestchina AT wangge determiningoptimalmulchingplantingdensityandnitrogenapplicationtoincreasemaizegrainyieldandnitrogentranslocationefficiencyinnorthwestchina AT turnerneilc determiningoptimalmulchingplantingdensityandnitrogenapplicationtoincreasemaizegrainyieldandnitrogentranslocationefficiencyinnorthwestchina AT xingyingying determiningoptimalmulchingplantingdensityandnitrogenapplicationtoincreasemaizegrainyieldandnitrogentranslocationefficiencyinnorthwestchina AT limeitian determiningoptimalmulchingplantingdensityandnitrogenapplicationtoincreasemaizegrainyieldandnitrogentranslocationefficiencyinnorthwestchina AT guotao determiningoptimalmulchingplantingdensityandnitrogenapplicationtoincreasemaizegrainyieldandnitrogentranslocationefficiencyinnorthwestchina |