Meta-Analysis of Factors Affecting C-N Fractions and Yield of Paddy Soils by Total Straw Return and N Fertilizer Application
The effective use of nutrient-rich crop straw is an important way to use resources efficiently and to sustain agricultural development. This meta-analysis study collected and analyzed the data of 6788 observations published in 238 peer-reviewed papers to investigate differences in soil C-N fractions...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/12/3168 |
| _version_ | 1797461840184213504 |
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| author | Liqiang Zhang Yunlong Wang Zixi Lou Lefei Hsu Di Chen Renzhe Piao Hongyan Zhao Zongjun Cui |
| author_facet | Liqiang Zhang Yunlong Wang Zixi Lou Lefei Hsu Di Chen Renzhe Piao Hongyan Zhao Zongjun Cui |
| author_sort | Liqiang Zhang |
| collection | DOAJ |
| description | The effective use of nutrient-rich crop straw is an important way to use resources efficiently and to sustain agricultural development. This meta-analysis study collected and analyzed the data of 6788 observations published in 238 peer-reviewed papers to investigate differences in soil C-N fractions and yields of paddy soils under different straw-return amounts. This large dataset was also used to quantify the degree of influence of factors such as climate characteristics, soil properties, N fertilizer application rates, straw-rotting agent addition, rice varieties, and straw return methods. The results showed that straw return amounts improved soil alkaline-hydrolysable N (7%), total N (10%), organic C (11%), the C:N ratio (8%), rice N accumulation (12%), and overall yield (18%). The most significant effect was in northeast China fields for total soil nitrogen (TN) content and yield with increases of 13% and 22%, respectively. We also found more effective N utilization and a greater rice yield when 220–260 kg ha<sup>−1</sup> N fertilizer was applied with 20–30 kg ha<sup>−1</sup> straw-rotting agent with the total amount of straw return. These findings have important implications for choosing appropriate conditions and field management practices and to improve rice yield in China. |
| first_indexed | 2024-03-09T17:25:04Z |
| format | Article |
| id | doaj.art-882b52fb50ef44e3873aa4f959ffde96 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T17:25:04Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-882b52fb50ef44e3873aa4f959ffde962023-11-24T12:47:36ZengMDPI AGAgronomy2073-43952022-12-011212316810.3390/agronomy12123168Meta-Analysis of Factors Affecting C-N Fractions and Yield of Paddy Soils by Total Straw Return and N Fertilizer ApplicationLiqiang Zhang0Yunlong Wang1Zixi Lou2Lefei Hsu3Di Chen4Renzhe Piao5Hongyan Zhao6Zongjun Cui7College of Agronomy, Yanbian University, Yanji 133002, ChinaCollege of Agronomy, Yanbian University, Yanji 133002, ChinaCollege of Agronomy, Yanbian University, Yanji 133002, ChinaCollege of Agronomy, Yanbian University, Yanji 133002, ChinaCollege of Agronomy, Yanbian University, Yanji 133002, ChinaCollege of Agronomy, Yanbian University, Yanji 133002, ChinaCollege of Agronomy, Yanbian University, Yanji 133002, ChinaCollege of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, ChinaThe effective use of nutrient-rich crop straw is an important way to use resources efficiently and to sustain agricultural development. This meta-analysis study collected and analyzed the data of 6788 observations published in 238 peer-reviewed papers to investigate differences in soil C-N fractions and yields of paddy soils under different straw-return amounts. This large dataset was also used to quantify the degree of influence of factors such as climate characteristics, soil properties, N fertilizer application rates, straw-rotting agent addition, rice varieties, and straw return methods. The results showed that straw return amounts improved soil alkaline-hydrolysable N (7%), total N (10%), organic C (11%), the C:N ratio (8%), rice N accumulation (12%), and overall yield (18%). The most significant effect was in northeast China fields for total soil nitrogen (TN) content and yield with increases of 13% and 22%, respectively. We also found more effective N utilization and a greater rice yield when 220–260 kg ha<sup>−1</sup> N fertilizer was applied with 20–30 kg ha<sup>−1</sup> straw-rotting agent with the total amount of straw return. These findings have important implications for choosing appropriate conditions and field management practices and to improve rice yield in China.https://www.mdpi.com/2073-4395/12/12/3168ricestraw returnsoil nutrientsyieldmeta-analysis |
| spellingShingle | Liqiang Zhang Yunlong Wang Zixi Lou Lefei Hsu Di Chen Renzhe Piao Hongyan Zhao Zongjun Cui Meta-Analysis of Factors Affecting C-N Fractions and Yield of Paddy Soils by Total Straw Return and N Fertilizer Application Agronomy rice straw return soil nutrients yield meta-analysis |
| title | Meta-Analysis of Factors Affecting C-N Fractions and Yield of Paddy Soils by Total Straw Return and N Fertilizer Application |
| title_full | Meta-Analysis of Factors Affecting C-N Fractions and Yield of Paddy Soils by Total Straw Return and N Fertilizer Application |
| title_fullStr | Meta-Analysis of Factors Affecting C-N Fractions and Yield of Paddy Soils by Total Straw Return and N Fertilizer Application |
| title_full_unstemmed | Meta-Analysis of Factors Affecting C-N Fractions and Yield of Paddy Soils by Total Straw Return and N Fertilizer Application |
| title_short | Meta-Analysis of Factors Affecting C-N Fractions and Yield of Paddy Soils by Total Straw Return and N Fertilizer Application |
| title_sort | meta analysis of factors affecting c n fractions and yield of paddy soils by total straw return and n fertilizer application |
| topic | rice straw return soil nutrients yield meta-analysis |
| url | https://www.mdpi.com/2073-4395/12/12/3168 |
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