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Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize
Given the shortage of water resources and excessive application of nitrogen fertilizers in irrigated areas, we explored the effect of water–nitrogen coupling on soil microbial diversity in maize fields irrigated using shallow buried droppers. A field experiment (split-plot design) was used with irri...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9736923/ https://www.ncbi.nlm.nih.gov/pubmed/36501245 http://dx.doi.org/10.3390/plants11233206 |
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author | , Sarula Yang, Hengshan Zhang, Ruifu Li, Yuanyuan Meng, Fanhao Ma, Jinhui |
author_facet | , Sarula Yang, Hengshan Zhang, Ruifu Li, Yuanyuan Meng, Fanhao Ma, Jinhui |
author_sort | , Sarula |
collection | PubMed |
description | Given the shortage of water resources and excessive application of nitrogen fertilizers in irrigated areas, we explored the effect of water–nitrogen coupling on soil microbial diversity in maize fields irrigated using shallow buried droppers. A field experiment (split-plot design) was used with irrigation amounts set at 40%, 50%, and 60% of the conventional amount; furthermore, 13 water and nitrogen coupling treatments were designed. The secondary area was the nitrogen application level, corresponding to 50%, 70%, and the original conventional application amounts. The results showed that the effect of irrigation amount on bacterial community composition was greater than that of nitrogen, whereas the effect of nitrogen on fungi was greater than that on bacteria. No significant difference was detected in the α diversity index or species richness of bacteria and fungi. Available phosphorus and organic carbon contents significantly correlated with the community structure of soil bacteria (p < 0.05). The relative abundances of bacteria and fungi were stable with the decrease of nitrogen application rate at the irrigation rate of 2000 m(3) ha(−1). With the decrease of irrigation amount, the relative abundance of bacteria and fungi was stable under the treatment of 210 kg ha(−1) nitrogen fertilizer. Moreover, the relative abundance of nitrogen-fixing bacteria related to the nitrogen cycle was increased by irrigation of 2000 m(3) ha(−1) and nitrogen application of 210 kg ha(−1). Moderate reduction of subsequent N supply should be as a prior soil management option in a high N input agroecosystem. |
format | Online Article Text |
id | pubmed-9736923 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-97369232022-12-11 Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize , Sarula Yang, Hengshan Zhang, Ruifu Li, Yuanyuan Meng, Fanhao Ma, Jinhui Plants (Basel) Article Given the shortage of water resources and excessive application of nitrogen fertilizers in irrigated areas, we explored the effect of water–nitrogen coupling on soil microbial diversity in maize fields irrigated using shallow buried droppers. A field experiment (split-plot design) was used with irrigation amounts set at 40%, 50%, and 60% of the conventional amount; furthermore, 13 water and nitrogen coupling treatments were designed. The secondary area was the nitrogen application level, corresponding to 50%, 70%, and the original conventional application amounts. The results showed that the effect of irrigation amount on bacterial community composition was greater than that of nitrogen, whereas the effect of nitrogen on fungi was greater than that on bacteria. No significant difference was detected in the α diversity index or species richness of bacteria and fungi. Available phosphorus and organic carbon contents significantly correlated with the community structure of soil bacteria (p < 0.05). The relative abundances of bacteria and fungi were stable with the decrease of nitrogen application rate at the irrigation rate of 2000 m(3) ha(−1). With the decrease of irrigation amount, the relative abundance of bacteria and fungi was stable under the treatment of 210 kg ha(−1) nitrogen fertilizer. Moreover, the relative abundance of nitrogen-fixing bacteria related to the nitrogen cycle was increased by irrigation of 2000 m(3) ha(−1) and nitrogen application of 210 kg ha(−1). Moderate reduction of subsequent N supply should be as a prior soil management option in a high N input agroecosystem. MDPI 2022-11-23 /pmc/articles/PMC9736923/ /pubmed/36501245 http://dx.doi.org/10.3390/plants11233206 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article , Sarula Yang, Hengshan Zhang, Ruifu Li, Yuanyuan Meng, Fanhao Ma, Jinhui Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize |
title | Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize |
title_full | Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize |
title_fullStr | Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize |
title_full_unstemmed | Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize |
title_short | Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize |
title_sort | impact of drip irrigation and nitrogen fertilization on soil microbial diversity of spring maize |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9736923/ https://www.ncbi.nlm.nih.gov/pubmed/36501245 http://dx.doi.org/10.3390/plants11233206 |
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