Arid
Evaluation of the SALTMED model for sorghum under saline conditions in an arid region
Ranjbar, G. H.1; Ghadiri, H.1; Razzaghi, F.2; Sepaskhah, A. R.2; Edalat, M.1
通讯作者Ghadiri, H.
来源期刊INTERNATIONAL JOURNAL OF PLANT PRODUCTION
ISSN1735-6814
EISSN1735-8043
出版年2015
卷号9期号:3页码:373-392
英文摘要

SALTMED model has been developed to predict yield, soil salinity and water content under saline conditions. A two year field experiment was carried out during 2012-13 to calibrate and validate the model for sorghum. Plants were irrigated with salinity levels of 2, 6, 10 and 14 dS m(-1). Results showed that there were significant differences between the observed and simulated sorghum dry matter (SDM) and yield. Absolute mean differences between the observed and simulated SDM values for 2, 6, 10 and 14 dS m-1 were 0.45, 1.53, 0.04 and 1.07 Mgha(-1), respectively. Soil water contents (SWC) were overestimated at different soil depths. Mean differences between the simulated and observed SWC at 0.0-0.3, 0.3-0.6, 0.6-0.9 and 0.0-0.9 m soil depths were 0.02, 0.04, 0.02 and 0.03 m(3)m(-3), respectively. As salinity increased the mean differences between the observed and simulated SWC were increased. There were no significant differences between the observed and simulated soil salinities at 0.0-0.3, 0.3-0.6, 0.6-0.9 and 0.0-0.9 m soil depths. The Willmott index of agreement value of the observed and simulated ECe at different soil depth were between 0.92-0.96. It is concluded that following successful calibration, the SALTMED model could predict soil salinity and SWC with reasonably good accuracy at different water salinity levels. Although, SALTMED model reasonably well predicted soil salinity at different soil depth, there was a weak agreement between the observed and simulated soil water content at different soil depths. There was a fair agreement between the observed and simulated dry matter and grain yield at different water salinity levels.


英文关键词Modelling Salt stress Soil salinity Soil water content
类型Article
语种英语
国家Iran
收录类别SCI-E
WOS记录号WOS:000354870500003
WOS关键词GENERIC INTEGRATED APPROACH ; FIELD MANAGEMENT ; IRRIGATION ; CROP ; WATER ; GROWTH ; CALIBRATION ; VALIDATION ; YIELD ; RESPONSES
WOS类目Agronomy
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/188033
作者单位1.Shiraz Univ, Coll Agr, Dept Crop Prod & Plant Breeding, Shiraz, Iran;
2.Shiraz Univ, Coll Agr, Dept Water Engn, Shiraz, Iran
推荐引用方式
GB/T 7714
Ranjbar, G. H.,Ghadiri, H.,Razzaghi, F.,et al. Evaluation of the SALTMED model for sorghum under saline conditions in an arid region[J],2015,9(3):373-392.
APA Ranjbar, G. H.,Ghadiri, H.,Razzaghi, F.,Sepaskhah, A. R.,&Edalat, M..(2015).Evaluation of the SALTMED model for sorghum under saline conditions in an arid region.INTERNATIONAL JOURNAL OF PLANT PRODUCTION,9(3),373-392.
MLA Ranjbar, G. H.,et al."Evaluation of the SALTMED model for sorghum under saline conditions in an arid region".INTERNATIONAL JOURNAL OF PLANT PRODUCTION 9.3(2015):373-392.
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