Effects of UV-B Radiation on the Chemical Composition of Azolla and Its Decomposition after Returning to the Field and Nitrogen Transformation in Soil
Abstract
:1. Introduction
2. Materials and Methods
2.1. Experimental Site Overview and Test Materials
2.2. Experimental Design
2.3. Determination of Chemical Components of Plants
2.4. Determination of Soil Nitrogen Content
2.5. Determination of Soil Enzyme Activity
2.6. Determination of the Soil Nitrogen Transformation Bacterial Community
2.7. Statistical Analysis of Data
3. Results
3.1. Effect of UV-B Radiation on the Chemical Composition of Azolla
3.2. Decomposition of Azolla and Its Effect on Soil Nitrogen Transformation
3.3. Effect of Azolla Decomposition on Soil Biological Properties
3.4. Correlation Analysis
4. Discussion
4.1. Response of Chemical Composition Change and Residue Decomposition of Azolla to Enhanced UV-B Radiation
4.2. Response of Nitrogen Transformation in Paddy Soil to Azolla Returning to Field after UV-B Radiation
4.3. Response of N2O Emission from Paddy Soil to the Application of Azolla after UV-B Radiation
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Treatment | Cellulose (%) | Lignin (%) | Total Nitrogen (mg·g−1) |
---|---|---|---|
CK | 32.5 ± 0.92 | 17.1 ± 0.66 | 6.68 ± 0.16 |
UV-B | 31.1 ± 1.1 | 18.2 ± 0.61 | 7.81 ± 0.16 ** |
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Chang, L.; Li, H.; Liu, C.; Liang, X.; Xie, C.; Li, Z.; Li, Y.; Zhan, F.; He, Y. Effects of UV-B Radiation on the Chemical Composition of Azolla and Its Decomposition after Returning to the Field and Nitrogen Transformation in Soil. Agronomy 2023, 13, 1968. https://doi.org/10.3390/agronomy13081968
Chang L, Li H, Liu C, Liang X, Xie C, Li Z, Li Y, Zhan F, He Y. Effects of UV-B Radiation on the Chemical Composition of Azolla and Its Decomposition after Returning to the Field and Nitrogen Transformation in Soil. Agronomy. 2023; 13(8):1968. https://doi.org/10.3390/agronomy13081968
Chicago/Turabian StyleChang, Linxi, Haitao Li, Chengqian Liu, Xinran Liang, Chunmei Xie, Zuran Li, Yuan Li, Fangdong Zhan, and Yongmei He. 2023. "Effects of UV-B Radiation on the Chemical Composition of Azolla and Its Decomposition after Returning to the Field and Nitrogen Transformation in Soil" Agronomy 13, no. 8: 1968. https://doi.org/10.3390/agronomy13081968