The Effects of Brackish Water Drip Irrigation on Soil Moisture and Soil Salinity in the Oasis Cotton Fileds

The purpose of this study is to develop controllable cotton irrigation techniques and system,which is useful for the management of brackish water drip irrigation of cotton in Xinjiang oasis.The effects of brackish water drip irrigation on soil moisture and soil salinity were studied in the irrigation experiment station of construction corps,Xinjiang in 2010.The results show that: with the increasing salinity of irrigation water,the crop root zone salinity increased significantly.When the root zone soil salinity accumulated to a certain extent,it affected the water uptake and crop growth,transpiration,but relative increased soil water content.Mild salt stress treatment can protect the topsoil,loose the soil and improve the soil's fertilizer,is conducive to crop growth.Severe salt and water stress slightly affected the soil bulk density,but seriously affected root growth.