To investigate the effects of precipitation pattern change on root morphological characteristics of Reaumuria soongorica seedlings in arid and semi-arid areas, a controlled experiment with two factors: precipitation [natural precipitation as control (W); W plus 30% (W+); W minus 30% (W-) and precipitation interval (5 days, T; 10 days, T+)], during the growing season. Results; (1): Root morphological indices showed an increasing trend with increasing precipitation with total root length, total root volume and root biomass increasing by 39.2%, 62...