Self-recovery of Soil Water in Jujube Orchard in Northwest China: Experiment and Numerical Modelling
HUI Qian
WANG Youke
DONG Jianguo
ZHANG Jingxiao
CHEN Shaoyong
Abstract：A two-year field experiment was conducted to study the dynamics of soil moisture and biomass in a in-tensively cultivated and rain-fed jujube orchard. We pruned the jujubes to control their height. Four different ini-tial soil moistures were examined. We then simulated the soil water dynamics using the HYDRUS 1D software. The results showed that, under natural rainfall condition, the dynamic patterns of the soil water under different ini-tial moistures were the same, differing only in their absolute values. The error of the results simulated from the HYDRUS 1D was only 1.52%compared with the measurement, with the RMSE less than 0.5 and the coefficient of determination being 94%. The results predicted using the model reveal that, by pruning the jujubes to save wa-ter, the moisture content in the orchard can remain at a good level for the jujube to grow in most time of the next 60 years, and that pruning can improve water use efficiency.
Keywords：jujube orchardrainfallsoil moisturenumerical simulation
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 34-38 )