Journal article

Simultaneous quantification of N-2, NH3 and N2O emissions from a flooded paddy field under different N fertilization regimes

Longlong Xia, Xiaobo Li, Qianqian Ma, Shu Kee Lam, Benjamin Wolf, Ralf Kiese, Klaus Butterbach-Bahl, Deli Chen, Zhian Li, Xiaoyuan Yan

Global Change Biology | Wiley | Published : 2020

Abstract

Gaseous nitrogen (N) emissions, especially emissions of dinitrogen (N2 ) and ammonia (NH3 ), have long been considered as the major pathways of N loss from flooded rice paddies. However, no studies have simultaneously evaluated the overall response of gaseous N losses to improved N fertilization practices due to the difficulties to directly measure N2 emissions from paddy soils. We simultaneously quantified emissions of N2 (using membrane inlet mass spectrometry), NH3 and nitrous oxide (N2 O) from a flooded paddy field in southern China over an entire rice-growing season. Our field experiment included three treatments: a control treatment (no N addition) and two N fertilizer (220 kg N/ha) ap..

View full abstract

Grants

Awarded by National Key Research & Development Program of China


Awarded by National Natural Science Foundation of China


Awarded by Natural Science Foundation of Guangdong Province


Awarded by R&D program of Guangdong Provincial Department of Science and Technology


Awarded by Research Fund of the State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences


Funding Acknowledgements

National Key Research & Development Program of China, Grant/Award Number: 2017YFD0200100 and 2017YFC0506305; National Natural Science Foundation of China, Grant/Award Number: 41425005, 41977097, 41401279, 31600392 and 31971499; Natural Science Foundation of Guangdong Province, Grant/Award Number: 2019A1515012067 and 2016A030310013; Humboldt Postdoctoral Research Fellowship; R&D program of Guangdong Provincial Department of Science and Technology, Grant/Award Number: 2018B030324003; Research Fund of the State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Grant/Award Number: Y412201422; China Scholarship Council, Switzerland