Title: Study on model of greenhouse gas N2O emission flux of rice field in cold region in growing season in water-saving irrigation mode
Authors: Yu Lihong; Wang Mengxue
Addresses: Environmental Science Department, Agronomy College of Heilongjiang Bayi Agricultural University, Daqing, 163319, China ' Environmental Science Department, Agronomy College of Heilongjiang Bayi Agricultural University, Daqing, 163319, China
Abstract: Under the condition of field experiment, three water management modes of control irrigation, intermittent irrigation and flood irrigation were set, a static black-box-gas chromatographic method was adopted for field in-situ observation on N2O emission flux of cold region rice field in the growing season, and optimal single-factor model and interaction model of N2O emission flux of rice in different water management modes in the growing season were established by using test data of 2014. The interaction model can effectively describe the response features of rice field N2O emission flux to soil nitrate nitrogen and temperature coordinated variation better than any single-factor model. The models of the study can be used for estimating N2O emission flux of rice field in the growing season in cold region of China.
Keywords: rice production in cold region; irrigation mode; N2O; model.
International Journal of Engineering Systems Modelling and Simulation, 2018 Vol.10 No.2, pp.87 - 96
Received: 31 Oct 2016
Accepted: 24 Jun 2017
Published online: 15 May 2018 *