Study on salt movement features under flood irrigation and drip irrigation in arid region

In order to restrain salt content of grape land in arid region,an irrigation test between flood irrigation and drip irrigation was carried out to study salt movement in soil and in effect on salt content,determine soil content in different soil profile by conductivity.The result showed that drip irrigation could result in obvious effect of water-saving,when irrigation water supply was 1 500 m~3/hm~2 the salinity moved down deep 100～120 cm in soil profile. On the other hand,when salt content was restrained with drip irrigation,the drip irrigation amount was 600 m~3/hm~2,the salinity moved down deep 60 cm in soil profile and horizontal movement to 200 cm on the centre of dripper,in which the soil salinity was restrained beyond the grape root system zone in soil profile.However,there were a low salt content area and a cumulation salt area under the drip irrigation method.