Journal article

Simulation of nitrate leaching under irrigated maize on sandy soil in desert oasis in Inner Mongolia, China

Kelin Hu, Baoguo Li, Deli Chen, Yuanpei Zhang, Robert Edis

AGRICULTURAL WATER MANAGEMENT | ELSEVIER | Published : 2008

Abstract

Water scarcity and nitrate contamination in groundwater are serious problems in desert oases in Northwest China. Field and 15N microplot experiments with traditional and improved water and nitrogen management were conducted in a desert oasis in Inner Mongolia Autonomous Region. Water movement, nitrogen transport and crop growth were simulated by the soil-plant system with water and solute transport model (SPWS). The model simulation results, including the water content and nitrate concentration in the soil profile, leaf area index, dry matter weight, crop N uptake and grain yield, were all in good agreement with the field measurements. The water and nitrogen use efficiency of the improved tr..

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Grants

Awarded by ACIAR (Australia Centre for International Agricultural Research)


Awarded by Program for New Century Excellent Talents in University


Awarded by Program for Changjiang Scholars and Innovative Research Team in University


Funding Acknowledgements

The study was funded by the China-Australia Cooperation Project ACIAR (Australia Centre for International Agricultural Research) (LWR/2003/039) and AusAid support, Program for New Century Excellent Talents in University (NCET-07-0809) and Program for Changjiang Scholars and Innovative Research Team in University (IRT0412). We thank Dr. Jirka Simunek for providing the source code of HYDRUS-1D model and Dr. Debra Turner providing the results of gaseous emission. We also thank the reviewers and issue editor of the journal for their valuable comments, suggestions and revisions on this manuscript.