Soil Amendments and Slow-Release Urea Improved Growth, Physiological Characteristics, and Yield of Salt-Tolerant Rice Under Salt Stress Conditions
The present study aimed to investigate the effects of different soil amendments coupled with nitrogen fertilizer on the morpho-physiological characteristics and yield of salt-tolerant rice under saline conditions. The soil amendments, i.e., S1: zeolite amendment, S2: coconut coir amendment, S3: humi...
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2025-02-01
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| author | Rongyi Li Xiayu Guo Yucheng Qi Yuyuan Wang Jianbo Wang Pengfei Zhang Shenghai Cheng Wenli He Tingcheng Zhao Yusheng Li Lin Li Junchao Ji Aibin He Zhiyong Ai |
| author_facet | Rongyi Li Xiayu Guo Yucheng Qi Yuyuan Wang Jianbo Wang Pengfei Zhang Shenghai Cheng Wenli He Tingcheng Zhao Yusheng Li Lin Li Junchao Ji Aibin He Zhiyong Ai |
| author_sort | Rongyi Li |
| collection | DOAJ |
| description | The present study aimed to investigate the effects of different soil amendments coupled with nitrogen fertilizer on the morpho-physiological characteristics and yield of salt-tolerant rice under saline conditions. The soil amendments, i.e., S1: zeolite amendment, S2: coconut coir amendment, S3: humic acid amendment, and S0: no amendment, and fertilizer treatments, i.e., N1: urea, N2: slow-release urea, and N0: no N fertilizer, were kept in main plots and sub-plots, respectively, in a split-plot design. The salt-tolerant variety ‘Shuangliangyou 138’ was exposed to 0.3% salt irrigation water. The results showed that during the entire growth period, compared to S0, the S1 and S3 treatments increased the SPAD values by an average of 6.3%and 5.5%, respectively, the leaf area index by an average of 24.5% and 19.8%, the canopy interception rate by an average of 11.5% and 4.1%, and the aboveground biomass by an average of 36.8% and 13.9%, respectively. Moreover, under S1 and S3 conditions, the tiller number per square meter, leaf water potential, leaf water content, and chlorophyll contents were also improved under the slow-release urea than urea. Moreover, slow-release urea promoted root vitality and nutrient absorption as well as enhanced the activity of antioxidant and nitrogen metabolism enzymes than urea under the S1 and S3 conditions. In sum, the rational application of soil amendments and slow-release urea could improve the rice productivity on saline-alkali land. |
| format | Article |
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| institution | DOAJ |
| issn | 2223-7747 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
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| series | Plants |
| spelling | doaj-art-c7d25d72ffc542c8bfbb8183abf854d82025-08-20T03:12:06ZengMDPI AGPlants2223-77472025-02-0114454310.3390/plants14040543Soil Amendments and Slow-Release Urea Improved Growth, Physiological Characteristics, and Yield of Salt-Tolerant Rice Under Salt Stress ConditionsRongyi Li0Xiayu Guo1Yucheng Qi2Yuyuan Wang3Jianbo Wang4Pengfei Zhang5Shenghai Cheng6Wenli He7Tingcheng Zhao8Yusheng Li9Lin Li10Junchao Ji11Aibin He12Zhiyong Ai13College of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaNational Innovation Center of Saline-Alkali Tolerant Rice in Sanya, Sanya 572000, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaCollege of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, ChinaNational Innovation Center of Saline-Alkali Tolerant Rice in Sanya, Sanya 572000, ChinaNational Innovation Center of Saline-Alkali Tolerant Rice in Sanya, Sanya 572000, ChinaThe present study aimed to investigate the effects of different soil amendments coupled with nitrogen fertilizer on the morpho-physiological characteristics and yield of salt-tolerant rice under saline conditions. The soil amendments, i.e., S1: zeolite amendment, S2: coconut coir amendment, S3: humic acid amendment, and S0: no amendment, and fertilizer treatments, i.e., N1: urea, N2: slow-release urea, and N0: no N fertilizer, were kept in main plots and sub-plots, respectively, in a split-plot design. The salt-tolerant variety ‘Shuangliangyou 138’ was exposed to 0.3% salt irrigation water. The results showed that during the entire growth period, compared to S0, the S1 and S3 treatments increased the SPAD values by an average of 6.3%and 5.5%, respectively, the leaf area index by an average of 24.5% and 19.8%, the canopy interception rate by an average of 11.5% and 4.1%, and the aboveground biomass by an average of 36.8% and 13.9%, respectively. Moreover, under S1 and S3 conditions, the tiller number per square meter, leaf water potential, leaf water content, and chlorophyll contents were also improved under the slow-release urea than urea. Moreover, slow-release urea promoted root vitality and nutrient absorption as well as enhanced the activity of antioxidant and nitrogen metabolism enzymes than urea under the S1 and S3 conditions. In sum, the rational application of soil amendments and slow-release urea could improve the rice productivity on saline-alkali land.https://www.mdpi.com/2223-7747/14/4/543agronomic traitsantioxidant enzymesnitrogen fertilizernitrogen metabolismsoil amendmentssalt stress |
| spellingShingle | Rongyi Li Xiayu Guo Yucheng Qi Yuyuan Wang Jianbo Wang Pengfei Zhang Shenghai Cheng Wenli He Tingcheng Zhao Yusheng Li Lin Li Junchao Ji Aibin He Zhiyong Ai Soil Amendments and Slow-Release Urea Improved Growth, Physiological Characteristics, and Yield of Salt-Tolerant Rice Under Salt Stress Conditions Plants agronomic traits antioxidant enzymes nitrogen fertilizer nitrogen metabolism soil amendments salt stress |
| title | Soil Amendments and Slow-Release Urea Improved Growth, Physiological Characteristics, and Yield of Salt-Tolerant Rice Under Salt Stress Conditions |
| title_full | Soil Amendments and Slow-Release Urea Improved Growth, Physiological Characteristics, and Yield of Salt-Tolerant Rice Under Salt Stress Conditions |
| title_fullStr | Soil Amendments and Slow-Release Urea Improved Growth, Physiological Characteristics, and Yield of Salt-Tolerant Rice Under Salt Stress Conditions |
| title_full_unstemmed | Soil Amendments and Slow-Release Urea Improved Growth, Physiological Characteristics, and Yield of Salt-Tolerant Rice Under Salt Stress Conditions |
| title_short | Soil Amendments and Slow-Release Urea Improved Growth, Physiological Characteristics, and Yield of Salt-Tolerant Rice Under Salt Stress Conditions |
| title_sort | soil amendments and slow release urea improved growth physiological characteristics and yield of salt tolerant rice under salt stress conditions |
| topic | agronomic traits antioxidant enzymes nitrogen fertilizer nitrogen metabolism soil amendments salt stress |
| url | https://www.mdpi.com/2223-7747/14/4/543 |
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