中文摘要：

为研究间接地下滴灌下盐分离子空间分布规律,通过小区试验,分析灌水量对枣树根区土壤盐分及盐分离子时空分布的影响,研究结果表明：过大或过小的灌水量不适宜土壤盐分的淋洗,在适宜的灌水量下,间接地下滴灌对0-50cm土层有较好的抑盐效果;单次滴灌前后,在一定的导水装置直径下（D=75mm）,Ca2＋、Mg2＋淋洗量随着灌水量的增加而减少;HCO-3、Cl-在灌水量为13L下,淋洗效果明显,而较大或较小的灌水量淋洗效果较差;SO2-4在较大的灌水量下才得到明显淋洗。

英文摘要：

In order to study the transportation and distribution characteristics of soil salinity under indirect subsurface drip irrigation,a field experiment is designed to analyze the soil salinity removal affected by irrigation quantity on jujube root zone.The results show that too big or too small irrigation water quantity is not suitable for soil salt leaching,while under the appropriate irrigation water quantity,indirect subsurface drip irrigation has good salt suppression effect to 0~50cm soil layer;The leaching Ca2＋,Mg2＋amounts decrease with the increase of irrigation quantity under certain water-conducting device diameter（D=75mm）after singer drip irrigation;The leaching HCO-3,Cl-amounts are the highest with suitable irrigation quantity of 13 L,and the SO2-4 concentration can be decreased only under larger irrigation quantity.