A <sup>15</sup>N-Tracing Study to Explore the Coupling Effects of Biochar and Nitrogen Fertilizer on Tomato Growth, Yield, Nitrogen Uptake and Utilization, and the Rhizosphere Soil Environment under Root-Divide Alternative Irrigation
To investigate the coupling effects of biochar and nitrogen fertilizer on tomato growth, nitrogen uptake and utilization (NUU), and the soil environment, a pot experiment was conducted using <sup>15</sup>N-tracing technology from March to July 2021 and from September 2021 to January 2022...
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MDPI AG
2023-12-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/9/12/1320 |
| _version_ | 1797380870999375872 |
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| author | Ke Zhang Jian Zheng Yan Wang Cong Shi You Wu |
| author_facet | Ke Zhang Jian Zheng Yan Wang Cong Shi You Wu |
| author_sort | Ke Zhang |
| collection | DOAJ |
| description | To investigate the coupling effects of biochar and nitrogen fertilizer on tomato growth, nitrogen uptake and utilization (NUU), and the soil environment, a pot experiment was conducted using <sup>15</sup>N-tracing technology from March to July 2021 and from September 2021 to January 2022. Three biochar application rates (B0, B1, and B2; 0, 3, and 6 t/hm<sup>2</sup>, respectively) and three nitrogen levels (N1, N2, and N3; 150, 300, and 450 kg/hm<sup>2</sup>, respectively) were set up. The results show that the growth, yield, rate of <sup>15</sup>N uptake, nitrogen derived from soil (Ndfs), total nitrogen (TN), <sup>15</sup>N utilization, and recovery rate of tomatoes were improved under biochar application, but nitrogen derived from fertilizer (Ndff) gradually decreased. A Pearson correlation analysis showed that the <sup>15</sup>N uptake, Ndfs, TN, rhizosphere soil organic matter, soil organic carbon, and TN were significantly positively correlated with the yield and lycopene content of tomatoes. The comprehensive benefit to the tomatoes was evaluated based on combination weighting with the help of the technique for order preference by similarity to ideal solution (TOPSIS). This indicates that the best planting mode was the B2N2 treatment, with a biochar rate of 6 t/hm<sup>2</sup> and nitrogen levels of 300 kg/hm<sup>2</sup>, under the alternative partial root-zone irrigation. |
| first_indexed | 2024-03-08T20:43:16Z |
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| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-08T20:43:16Z |
| publishDate | 2023-12-01 |
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| series | Horticulturae |
| spelling | doaj.art-e05ee02dbdea46ddb93ff89604add67d2023-12-22T14:12:36ZengMDPI AGHorticulturae2311-75242023-12-01912132010.3390/horticulturae9121320A <sup>15</sup>N-Tracing Study to Explore the Coupling Effects of Biochar and Nitrogen Fertilizer on Tomato Growth, Yield, Nitrogen Uptake and Utilization, and the Rhizosphere Soil Environment under Root-Divide Alternative IrrigationKe Zhang0Jian Zheng1Yan Wang2Cong Shi3You Wu4College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaTo investigate the coupling effects of biochar and nitrogen fertilizer on tomato growth, nitrogen uptake and utilization (NUU), and the soil environment, a pot experiment was conducted using <sup>15</sup>N-tracing technology from March to July 2021 and from September 2021 to January 2022. Three biochar application rates (B0, B1, and B2; 0, 3, and 6 t/hm<sup>2</sup>, respectively) and three nitrogen levels (N1, N2, and N3; 150, 300, and 450 kg/hm<sup>2</sup>, respectively) were set up. The results show that the growth, yield, rate of <sup>15</sup>N uptake, nitrogen derived from soil (Ndfs), total nitrogen (TN), <sup>15</sup>N utilization, and recovery rate of tomatoes were improved under biochar application, but nitrogen derived from fertilizer (Ndff) gradually decreased. A Pearson correlation analysis showed that the <sup>15</sup>N uptake, Ndfs, TN, rhizosphere soil organic matter, soil organic carbon, and TN were significantly positively correlated with the yield and lycopene content of tomatoes. The comprehensive benefit to the tomatoes was evaluated based on combination weighting with the help of the technique for order preference by similarity to ideal solution (TOPSIS). This indicates that the best planting mode was the B2N2 treatment, with a biochar rate of 6 t/hm<sup>2</sup> and nitrogen levels of 300 kg/hm<sup>2</sup>, under the alternative partial root-zone irrigation.https://www.mdpi.com/2311-7524/9/12/1320<i>Solamum lycopersicum</i>water-saving irrigation<sup>15</sup>N-tracing technologyPearson correlation analysiscomprehensive benefitsthe TOPSIS method |
| spellingShingle | Ke Zhang Jian Zheng Yan Wang Cong Shi You Wu A <sup>15</sup>N-Tracing Study to Explore the Coupling Effects of Biochar and Nitrogen Fertilizer on Tomato Growth, Yield, Nitrogen Uptake and Utilization, and the Rhizosphere Soil Environment under Root-Divide Alternative Irrigation Horticulturae <i>Solamum lycopersicum</i> water-saving irrigation <sup>15</sup>N-tracing technology Pearson correlation analysis comprehensive benefits the TOPSIS method |
| title | A <sup>15</sup>N-Tracing Study to Explore the Coupling Effects of Biochar and Nitrogen Fertilizer on Tomato Growth, Yield, Nitrogen Uptake and Utilization, and the Rhizosphere Soil Environment under Root-Divide Alternative Irrigation |
| title_full | A <sup>15</sup>N-Tracing Study to Explore the Coupling Effects of Biochar and Nitrogen Fertilizer on Tomato Growth, Yield, Nitrogen Uptake and Utilization, and the Rhizosphere Soil Environment under Root-Divide Alternative Irrigation |
| title_fullStr | A <sup>15</sup>N-Tracing Study to Explore the Coupling Effects of Biochar and Nitrogen Fertilizer on Tomato Growth, Yield, Nitrogen Uptake and Utilization, and the Rhizosphere Soil Environment under Root-Divide Alternative Irrigation |
| title_full_unstemmed | A <sup>15</sup>N-Tracing Study to Explore the Coupling Effects of Biochar and Nitrogen Fertilizer on Tomato Growth, Yield, Nitrogen Uptake and Utilization, and the Rhizosphere Soil Environment under Root-Divide Alternative Irrigation |
| title_short | A <sup>15</sup>N-Tracing Study to Explore the Coupling Effects of Biochar and Nitrogen Fertilizer on Tomato Growth, Yield, Nitrogen Uptake and Utilization, and the Rhizosphere Soil Environment under Root-Divide Alternative Irrigation |
| title_sort | sup 15 sup n tracing study to explore the coupling effects of biochar and nitrogen fertilizer on tomato growth yield nitrogen uptake and utilization and the rhizosphere soil environment under root divide alternative irrigation |
| topic | <i>Solamum lycopersicum</i> water-saving irrigation <sup>15</sup>N-tracing technology Pearson correlation analysis comprehensive benefits the TOPSIS method |
| url | https://www.mdpi.com/2311-7524/9/12/1320 |
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