Title :
Modelling water balance at the irrigated crop level to identify pathways for improving water use efficiency
Author :
Yinhong Kang ; Khan, Shahbaz ; Ma, Xiaoyi ; Khan, Shahbaz ; Liu, Jilong
Author_Institution :
Dept. of Inf. & Eng. Technol., Sichuan Agric. Univ., Ya´an, China
Abstract :
In this paper, the Soil-Water-Atmosphere-Plant (SWAP) model was used in conjunction with ROSETTA, a soil hydraulic properties simulation program, to evaluate the water balance for irrigated maize crop in Finley, NSW, Australia. The authors used the soil moisture content data to calibrate the SWAP model. The result shows that the simulated soil water content agrees well with the observed data excluding some very low measured soil water content value. Through analyzing the water balance components it appears there are opportunities to save water through better irrigation scheduling and recycling of drainage water. This can be used to help improve irrigation water productivity at the crop and irrigation system levels.
Keywords :
agricultural engineering; crops; environmental factors; hydrology; irrigation; moisture; soil; water resources; Australia; Finley; New South Wales; ROSETTA; SWAP model calibration; drainage water recycling; irrigated crop level water balance; irrigated maize crop; irrigation scheduling; soil hydraulic properties simulation program; soil moisture content data; soil-water-atmosphere-plant model; water balance modelling; water use efficiency improvement; Australia; Computational modeling; Data models; Irrigation; Soil; Water conservation; Murray Darling Basin; SWAP; soil moisture content; water balance; water productivity;
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
DOI :
10.1109/ISWREP.2011.5893039