Optimum Cultivation Model Increased the Grain Yield of Ratoon Rice and Nitrogen Agronomic Efficiency by Improving Root Morphological Traits and Stubble Character of the Main Rice
The present study investigated the effects of different integrated cultivation treatments on the yield, nitrogen agronomic efficiency (AE<sub>N</sub>), and growth performance of a ratoon rice system. A two-year field experiment was carried out during 2021–2022 using a randomized block de...
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| Format: | Article |
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MDPI AG
2023-06-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/7/1707 |
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| author | Huabin Zheng Shanzhen Liu Dan Zou Zaizhou He Yuanwei Chen Panpan Gai Weiqin Wang Qiyuan Tang |
| author_facet | Huabin Zheng Shanzhen Liu Dan Zou Zaizhou He Yuanwei Chen Panpan Gai Weiqin Wang Qiyuan Tang |
| author_sort | Huabin Zheng |
| collection | DOAJ |
| description | The present study investigated the effects of different integrated cultivation treatments on the yield, nitrogen agronomic efficiency (AE<sub>N</sub>), and growth performance of a ratoon rice system. A two-year field experiment was carried out during 2021–2022 using a randomized block design. Cultivation treatments included the farmers’ practice model (control, CK), high-yield and high-efficiency model (T1), enhanced-high-yield and high-efficiency model (T2), and the no-N model (N0). The grain yield, yield components, root traits, and stubble characteristics were determined. The results showed that T2 treatment significantly increased the grain yield and AE<sub>N</sub> by 53% and 236%, respectively, compared with CK. Similarly, the stubble weight, non-structure carbohydrate contents, and the root attributes were significantly improved under T2 treatment. The correlation analysis suggested that ratoon rice yield and AE<sub>N</sub> was significantly and positively correlated with root weight (<i>p</i> < 0.01) and the stubble parameters including stubble weight (<i>p</i> < 0.01), starch content (<i>p</i> < 0.01), and soluble sugar content (<i>p</i> < 0.01). Additionally, a significant and positive correlation between root weight and stubble weight (<i>p</i> < 0.05) was determined in our study. Consequently, our work highlights the benefits of integrating planting density, nitrogen/water management, and other practices to achieve high AE<sub>N</sub> and grain yield of the ratoon rice by improving root trait and stubble characteristics of the main rice. |
| first_indexed | 2024-03-11T01:23:51Z |
| format | Article |
| id | doaj.art-c13408de602f4dcfac4d427a72042913 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T01:23:51Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-c13408de602f4dcfac4d427a720429132023-11-18T17:54:57ZengMDPI AGAgronomy2073-43952023-06-01137170710.3390/agronomy13071707Optimum Cultivation Model Increased the Grain Yield of Ratoon Rice and Nitrogen Agronomic Efficiency by Improving Root Morphological Traits and Stubble Character of the Main RiceHuabin Zheng0Shanzhen Liu1Dan Zou2Zaizhou He3Yuanwei Chen4Panpan Gai5Weiqin Wang6Qiyuan Tang7College of Agronomy, Hunan Agricultural University, Changsha 410128, ChinaCollege of Agronomy, Hunan Agricultural University, Changsha 410128, ChinaHengyang Academy of Agricultural Sciences, Hengyang 421200, ChinaCollege of Agronomy, Hunan Agricultural University, Changsha 410128, ChinaCollege of Agronomy, Hunan Agricultural University, Changsha 410128, ChinaCollege of Agronomy, Hunan Agricultural University, Changsha 410128, ChinaCollege of Agronomy, Hunan Agricultural University, Changsha 410128, ChinaCollege of Agronomy, Hunan Agricultural University, Changsha 410128, ChinaThe present study investigated the effects of different integrated cultivation treatments on the yield, nitrogen agronomic efficiency (AE<sub>N</sub>), and growth performance of a ratoon rice system. A two-year field experiment was carried out during 2021–2022 using a randomized block design. Cultivation treatments included the farmers’ practice model (control, CK), high-yield and high-efficiency model (T1), enhanced-high-yield and high-efficiency model (T2), and the no-N model (N0). The grain yield, yield components, root traits, and stubble characteristics were determined. The results showed that T2 treatment significantly increased the grain yield and AE<sub>N</sub> by 53% and 236%, respectively, compared with CK. Similarly, the stubble weight, non-structure carbohydrate contents, and the root attributes were significantly improved under T2 treatment. The correlation analysis suggested that ratoon rice yield and AE<sub>N</sub> was significantly and positively correlated with root weight (<i>p</i> < 0.01) and the stubble parameters including stubble weight (<i>p</i> < 0.01), starch content (<i>p</i> < 0.01), and soluble sugar content (<i>p</i> < 0.01). Additionally, a significant and positive correlation between root weight and stubble weight (<i>p</i> < 0.05) was determined in our study. Consequently, our work highlights the benefits of integrating planting density, nitrogen/water management, and other practices to achieve high AE<sub>N</sub> and grain yield of the ratoon rice by improving root trait and stubble characteristics of the main rice.https://www.mdpi.com/2073-4395/13/7/1707ratoon riceroot weightspecific root lengthstubble weightnon-structure carbohydrate |
| spellingShingle | Huabin Zheng Shanzhen Liu Dan Zou Zaizhou He Yuanwei Chen Panpan Gai Weiqin Wang Qiyuan Tang Optimum Cultivation Model Increased the Grain Yield of Ratoon Rice and Nitrogen Agronomic Efficiency by Improving Root Morphological Traits and Stubble Character of the Main Rice Agronomy ratoon rice root weight specific root length stubble weight non-structure carbohydrate |
| title | Optimum Cultivation Model Increased the Grain Yield of Ratoon Rice and Nitrogen Agronomic Efficiency by Improving Root Morphological Traits and Stubble Character of the Main Rice |
| title_full | Optimum Cultivation Model Increased the Grain Yield of Ratoon Rice and Nitrogen Agronomic Efficiency by Improving Root Morphological Traits and Stubble Character of the Main Rice |
| title_fullStr | Optimum Cultivation Model Increased the Grain Yield of Ratoon Rice and Nitrogen Agronomic Efficiency by Improving Root Morphological Traits and Stubble Character of the Main Rice |
| title_full_unstemmed | Optimum Cultivation Model Increased the Grain Yield of Ratoon Rice and Nitrogen Agronomic Efficiency by Improving Root Morphological Traits and Stubble Character of the Main Rice |
| title_short | Optimum Cultivation Model Increased the Grain Yield of Ratoon Rice and Nitrogen Agronomic Efficiency by Improving Root Morphological Traits and Stubble Character of the Main Rice |
| title_sort | optimum cultivation model increased the grain yield of ratoon rice and nitrogen agronomic efficiency by improving root morphological traits and stubble character of the main rice |
| topic | ratoon rice root weight specific root length stubble weight non-structure carbohydrate |
| url | https://www.mdpi.com/2073-4395/13/7/1707 |
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