Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield
The number of seedlings per hill and the configuration of plant row spacing are important management measures to improve rice yield. In the present study, we evaluated the impact of various seedlings per hill (1, 3, 6, and 9 seedlings hill<sup>−1</sup>) under four different rice verities...
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MDPI AG
2022-09-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/11/19/2508 |
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| author | Xiaoyan Wu Izhar Ali Anas Iqbal Saif Ullah Pengli Yuan Anjie Xu Dongjie Xie Yuxi Zhou Xinlu Long Hua Zhang Jing Yu Zixiong Guo He Liang Shanqing Wei Ligeng Jiang |
| author_facet | Xiaoyan Wu Izhar Ali Anas Iqbal Saif Ullah Pengli Yuan Anjie Xu Dongjie Xie Yuxi Zhou Xinlu Long Hua Zhang Jing Yu Zixiong Guo He Liang Shanqing Wei Ligeng Jiang |
| author_sort | Xiaoyan Wu |
| collection | DOAJ |
| description | The number of seedlings per hill and the configuration of plant row spacing are important management measures to improve rice yield. In the present study, we evaluated the impact of various seedlings per hill (1, 3, 6, and 9 seedlings hill<sup>−1</sup>) under four different rice verities (two conventional rice, two hybrid rice) on allometric characteristics, nitrogen use efficiency (NUE) and yield in 2020 at early and late season. Results showed that compared with nine seedlings per hill (wide row spacing), the number of effective panicles, yield, grain biomass allocation, grain-to-leaf ratio, grain nitrogen accumulation, nitrogen dry matter production efficiency (NDMPE), N harvest index (NHI) of 1 seedling per hill increased by 21.8%, 10.91%, 10.5%, 32.25%, 17.03%, 9.67%, 6.5%, respectively. With the increase of seedlings per hill and the expansion of row spacing, stem biomass (SB) and reproductive biomass (RB) increased with the increase of above-ground biomass, mainly showing the relationship of isometric growth. Leaf biomass (LB) increased with above-ground biomass, mainly showing the relationship of allometric growth. The results suggested that under the same basic seedlings, transplanting 1 seedling per hill and dense planting was the most beneficial to improve rice yield. |
| first_indexed | 2024-03-09T21:17:32Z |
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| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T21:17:32Z |
| publishDate | 2022-09-01 |
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| series | Plants |
| spelling | doaj.art-0d384721c2b644c18f8a5ac922dec1bf2023-11-23T21:28:39ZengMDPI AGPlants2223-77472022-09-011119250810.3390/plants11192508Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and YieldXiaoyan Wu0Izhar Ali1Anas Iqbal2Saif Ullah3Pengli Yuan4Anjie Xu5Dongjie Xie6Yuxi Zhou7Xinlu Long8Hua Zhang9Jing Yu10Zixiong Guo11He Liang12Shanqing Wei13Ligeng Jiang14Key Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaKey Laboratory of Crop Cultivation and Farming System, College of Agriculture, Guangxi University, Nanning 530004, ChinaThe number of seedlings per hill and the configuration of plant row spacing are important management measures to improve rice yield. In the present study, we evaluated the impact of various seedlings per hill (1, 3, 6, and 9 seedlings hill<sup>−1</sup>) under four different rice verities (two conventional rice, two hybrid rice) on allometric characteristics, nitrogen use efficiency (NUE) and yield in 2020 at early and late season. Results showed that compared with nine seedlings per hill (wide row spacing), the number of effective panicles, yield, grain biomass allocation, grain-to-leaf ratio, grain nitrogen accumulation, nitrogen dry matter production efficiency (NDMPE), N harvest index (NHI) of 1 seedling per hill increased by 21.8%, 10.91%, 10.5%, 32.25%, 17.03%, 9.67%, 6.5%, respectively. With the increase of seedlings per hill and the expansion of row spacing, stem biomass (SB) and reproductive biomass (RB) increased with the increase of above-ground biomass, mainly showing the relationship of isometric growth. Leaf biomass (LB) increased with above-ground biomass, mainly showing the relationship of allometric growth. The results suggested that under the same basic seedlings, transplanting 1 seedling per hill and dense planting was the most beneficial to improve rice yield.https://www.mdpi.com/2223-7747/11/19/2508ricenitrogen accumulationnitrogen use efficiencyallometric growthnumber of seedlings per hillrow spacing |
| spellingShingle | Xiaoyan Wu Izhar Ali Anas Iqbal Saif Ullah Pengli Yuan Anjie Xu Dongjie Xie Yuxi Zhou Xinlu Long Hua Zhang Jing Yu Zixiong Guo He Liang Shanqing Wei Ligeng Jiang Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield Plants rice nitrogen accumulation nitrogen use efficiency allometric growth number of seedlings per hill row spacing |
| title | Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield |
| title_full | Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield |
| title_fullStr | Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield |
| title_full_unstemmed | Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield |
| title_short | Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield |
| title_sort | allometric characteristics of rice seedlings under different transplanted hills and row spacing impacts on nitrogen use efficiency and yield |
| topic | rice nitrogen accumulation nitrogen use efficiency allometric growth number of seedlings per hill row spacing |
| url | https://www.mdpi.com/2223-7747/11/19/2508 |
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