3. Results
3.1. Temporal and spatial variation of soil water content
Temporal variation of soil moisture under different partial
root-zone drip irrigations is shown in Fig. 2. Results showed
that the asymmetrical distribution of soil moisture in the two
sides of ADI root-zone was achieved due to the alternate
wetting and drying in arid fields (Fig. 2a). Soil moisture content
in the drying side was relatively constant or increased slightly
several days after irrigation as a result of redistribution of
water through root systems, which was more significant in FDI
(Fig. 2b).