Abstract: Response of soil moisture to precipitation and mulching measures was investigated based on the continuous observation information in plots with no-mulching,straw-mulching and granule-mulching.The results show that individual rainfall event is difficult to infiltrate into up to 30cm depth from surface during the dry season, especially when soil moisture is lower than 20% at 30cm depth.As for the responsive time,at 30cm,it is the shortest in granule-mulching plot,followed by straw-mulching plot and longest in no-mulching plot.At 60 cm,shortest responsive time is observed in straw-mulching plot and longest in no-mulching.At 100cm,soil moisture increases first in granule-mulching plot and 10-h delay takes place in straw-mulching plot compared with that of straw-mulching and it's the slowest in no-mulching.The soil moisture at 30cm depth in nomulching plot is 0.13 and 0.07cm³/cm³ lower than those of granule- and straw-mulching.It indicates the mulching measure is good for the storage of soil moisture.Although infiltration ability at 60 cm is more powerful in straw-mulching plot than that in granule-mulching plot,the latter's ability of water conservation is better than the former's.