Optimizing Agronomy Improves Super Hybrid Rice Yield and Nitrogen Use Efficiency through Enhanced Post-Heading Carbon and Nitrogen Metabolism
Abstract
:1. Introduction
2. Materials and Methods
2.1. Experimental Site and Weather Conditions
2.2. Test Material
2.3. Experimental Design and Crop Management
2.4. Sampling and Measurements
2.5. Data Analysis
3. Results
3.1. Grain Yields
3.2. N Use Efficiency
3.3. The Photosynthetic Rate in Flag Leaves
3.4. The NR, GS, GOGAT, and GDH Enzyme Activities
3.5. The Activities of AGP and SPS Enzyme
3.6. C/N in Straw and Grains
3.7. Soluble Sugars and Soluble Proteins
3.8. The Activities of POD, CAT, T-SOD, and APX Enzymes and the Content of MDA
3.9. Relationships between N Use Efficiency and the Physiological Characteristics of Flag Leaves at HD and 15DAH
4. Discussion
4.1. Effect of Optimal Management on Grain Yield and N Use Efficiency of Super Hybrid Rice
4.2. Effect of Optimal Management on Physiological Characteristics of Super Hybrid Rice
4.3. Optimization of Management to Increase Yield and N Use Efficiency through Enhanced Carbon–N Metabolism
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Deng, J.; Ye, J.; Liu, K.; Harrison, M.T.; Zhong, X.; Wang, C.; Tian, X.; Huang, L.; Zhang, Y. Optimizing Agronomy Improves Super Hybrid Rice Yield and Nitrogen Use Efficiency through Enhanced Post-Heading Carbon and Nitrogen Metabolism. Agronomy 2023, 13, 13. https://doi.org/10.3390/agronomy13010013
Deng J, Ye J, Liu K, Harrison MT, Zhong X, Wang C, Tian X, Huang L, Zhang Y. Optimizing Agronomy Improves Super Hybrid Rice Yield and Nitrogen Use Efficiency through Enhanced Post-Heading Carbon and Nitrogen Metabolism. Agronomy. 2023; 13(1):13. https://doi.org/10.3390/agronomy13010013
Chicago/Turabian StyleDeng, Jun, Jiayu Ye, Ke Liu, Matthew Tom Harrison, Xuefen Zhong, Chunhu Wang, Xiaohai Tian, Liying Huang, and Yunbo Zhang. 2023. "Optimizing Agronomy Improves Super Hybrid Rice Yield and Nitrogen Use Efficiency through Enhanced Post-Heading Carbon and Nitrogen Metabolism" Agronomy 13, no. 1: 13. https://doi.org/10.3390/agronomy13010013