Patterns of soil salinity and sodium under surface and subsurface drip irrigation in olive trees

Design and implementation correct drip irrigation plays an important role in increasing the productivity of agricultural land and help to using water low-quality. Attention to the problem of soil salinity¡ is determine the distribution pattern of soil salt is an effective tool for the proper management of soil. This study was done with goal to assess the two surfaces and subsurface drip irrigation system in olive trees in Tarom. In this regard¡ was discussed the pattern of distribution of mineral in soil¡ especially soil salinity and sodium adsorption ratio at various depths. Also distribution of soil salts were compared at in levels 50¡ 75 and 100% irrigation treatments. However¡ generally were obtained the concentrations of salt and sodium in different depths in this study in subsurface drip irrigation less than surface drip irrigation. Accumulation of Salinity and sodium in surface of soil in the top emitter in subsurface irrigation was greater than subsurface drip irrigation. Investigation different irrigation levels showed that in Spite of minerals reduction and leaching in irrigation level 100 percent¡ there isn’t significant difference in distribution of salinity and sodium between irrigation level 100 percent and 50 and 75.