Journal article

Simulation of N2O emissions and mitigation options for rainfed wheat cropping on a Vertosol in the subtropics

Yong Li, Weijin Wang, Steven Reeves, Ram C Dalal

SOIL RESEARCH | CSIRO PUBLISHING | Published : 2013

Abstract

The Water and Nitrogen Management Model (WNMM) was applied to simulate nitrous oxide (N2O) emissions from a wheat-cropped Vertosol under long-term management of no-till, crop residue retention, and nitrogen (N) fertiliser application in southern Queensland, Australia, from July 2006 to June 2009. For the simulation study, eight treatments of combinations of conventional tillage (CT) or no-till (NT), stubble burning (SB) or stubble retention (SR), and N fertiliser application at nil (0N) or 90 (90N) kg N/ha.year were used. The results indicated that WNMM satisfactorily simulated the soil water content of the topsoil, mineral N content of the entire soil profile (0-1.5m), and N2O emissions fro..

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Grants

Awarded by National Basic Research Program of China


Funding Acknowledgements

This research was financially supported by the National Basic Research Program of China (2012CB417105) and the Chinese Academy of Sciences (100-Talents Program). The measurement of N<INF>2</INF>O emissions was funded by the Australian Department of Climate Change and Energy Efficiency and the Queensland Department of Natural Resources.