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Combination of Polymer-Coated Urea and Rapid-Release Urea Increases Grain Yield and Nitrogen Use Efficiency of Rice by Improving Root and Shoot Activities
by
Rongyue Xu
Rongyue Xu
Jiangyao Fu
Jiangyao Fu
Yajun Zhang
Yajun Zhang
Zhiwei Sun
Zhiwei Sun
Yuemei Xu
Yuemei Xu
Weiyang Zhang
Weiyang Zhang
Dr. Weiyang Zhang is an associate professor and a master's
supervisor at the Agricultural College, [...]
Dr. Weiyang Zhang is an associate professor and a master's
supervisor at the Agricultural College, Yangzhou University. In 2018, he
obtained his PhD in Agronomy from Yangzhou University. In 2020, he completed
his postdoctoral research. He is mainly engaged in research on rice cultivation
and physiology and has made certain progress in the response of new plant
hormones to water and nitrogen management and their regulatory effects and
mechanisms on rice yield and quality. He has presided over several national or
provincial and ministerial projects, including the National Natural Science
Foundation of China General Project, the National Natural Science Foundation of
China Youth Fund Project, the National Key R&D Program Sub-Project, and the
China Postdoctoral Fund General Project. He was selected as the Jiangsu
Provincial Science and Technology Deputy Director, Yangzhou University's
"High-end Talent Support Program" and other talent programs. He has
published more than 40 SCI papers.
,
Kuanyu Zhu
Kuanyu Zhu
Junfei Gu
Junfei Gu
Prof. Dr. Junfei Gu is a professor and doctoral supervisor
at the Agricultural College, Yangzhou He [...]
Prof. Dr. Junfei Gu is a professor and doctoral supervisor
at the Agricultural College, Yangzhou University. He is also a director of the
Jiangsu Plant Physiology Society and an editorial board member of Agronomy.
From 2000 to 2007, he completed his BS and MSc at the College of Agronomy and
Biotechnology of China Agricultural University. In 2007, he went to Wageningen
University in the Netherlands, to pursue a doctorate. During his doctoral
studies, he received systematic training in crop models and crop physiology and
researched photosynthetic physiology and yield models of rice. In 2013, he was
introduced to the College of Agriculture of Yangzhou University as an
outstanding overseas doctor to research crop cultivation physiology and models.
He was selected as a "Double Innovation Doctor" in Jiangsu Province
and Yangzhou University High-end Talent Support Program/Outstanding Talent. His
research areas include crop photosynthetic physiology, efficient use of
nitrogen fertilizer, rice quality, and rice stress physiology.
Zhiqin Wang
Zhiqin Wang
Jianchang Yang
Jianchang Yang
Prof. Jianchang Yang is a professor at the Agricultural
College, Yangzhou University. He is also an [...]
Prof. Jianchang Yang is a professor at the Agricultural
College, Yangzhou University. He is also an expert in the National
"973" Program Agricultural Field Advisory Group. He has undertaken
more than 40 research projects including the National "863" Program,
the "973" Program, and the National Natural Science Foundation. He
has made important innovations in the research of rice grain filling and
water-saving irrigation theory and technology, has published more than 300 academic
papers at home and abroad, and has received 12 national and provincial-level scientific and technological awards. He was named one of the top ten meritorious people
in Yangzhou City, an outstanding talent in innovation and entrepreneurship in
Yangzhou City, an outstanding master's tutor in Jiangsu Province, the most outstanding teachers in universities in Jiangsu Province, an
outstanding national science and technology worker, and enjoys special
allowances from the State Council. He is engaged in teaching and scientific
research in crop cultivation and physiology. His research areas include grain
filling physiology in cereals, water stress and water-saving irrigation for
crops, and nitrogen management in rice and wheat.
1
Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College, Yangzhou University, Yangzhou 225009, China
2
Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
*
Authors to whom correspondence should be addressed.
Agronomy 2024, 14(7), 1585; https://doi.org/10.3390/agronomy14071585 (registering DOI)
Submission received: 12 June 2024
/
Revised: 17 July 2024
/
Accepted: 19 July 2024
/
Published: 20 July 2024
Abstract
The use of polymer-coated urea (PCU) can improve nitrogen use efficiency (NUE), compared to the application of rapid-release urea (RU). However, the effect of PCU-based nitrogen management on grain yield and the NUE of rice and its underlying mechanism remain unclear. A japonica rice cultivar Jinxiangyu 1 was grown in the field with four treatments including N omission (0N), split application of RU (Control), one-time application of 100% PCU (T1), and one-time application of 70% PCU + 30% RU (T2). Results showed that, compared to the control, the grain yield was significantly increased in the T2 treatment, while it was comparable in the T1 treatment. This was mainly due to increased total spikelets in the T2 treatment. Root oxidation activity (ROA) and root zeatin (Z) + zeatin riboside (ZR) content during booting were the distinct advantages of the T2 treatment, compared to either the control or T1 treatment, exhibiting significant or highly significant correlations with leaf photosynthesis. This process contributed significantly to total spikelets and total N uptake. Additionally, the T2 treatment absorbed more N than the control without reducing the internal N use efficiency (IEN), primarily due to its unchanged harvest index (HI) driven by comparable non-structural carbohydrate remobilization. In conclusion, combining PCU with RU can enhance the coordination of root and shoot traits during booting while maintaining a competitive HI at maturity, thereby significantly improving grain yield and achieving a balance in N uptake and utilization.
Share and Cite
MDPI and ACS Style
Xu, R.; Fu, J.; Zhang, Y.; Sun, Z.; Xu, Y.; Zhang, W.; Zhu, K.; Gu, J.; Wang, Z.; Yang, J.
Combination of Polymer-Coated Urea and Rapid-Release Urea Increases Grain Yield and Nitrogen Use Efficiency of Rice by Improving Root and Shoot Activities. Agronomy 2024, 14, 1585.
https://doi.org/10.3390/agronomy14071585
AMA Style
Xu R, Fu J, Zhang Y, Sun Z, Xu Y, Zhang W, Zhu K, Gu J, Wang Z, Yang J.
Combination of Polymer-Coated Urea and Rapid-Release Urea Increases Grain Yield and Nitrogen Use Efficiency of Rice by Improving Root and Shoot Activities. Agronomy. 2024; 14(7):1585.
https://doi.org/10.3390/agronomy14071585
Chicago/Turabian Style
Xu, Rongyue, Jiangyao Fu, Yajun Zhang, Zhiwei Sun, Yuemei Xu, Weiyang Zhang, Kuanyu Zhu, Junfei Gu, Zhiqin Wang, and Jianchang Yang.
2024. "Combination of Polymer-Coated Urea and Rapid-Release Urea Increases Grain Yield and Nitrogen Use Efficiency of Rice by Improving Root and Shoot Activities" Agronomy 14, no. 7: 1585.
https://doi.org/10.3390/agronomy14071585
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