The distribution and accumulation characteristics of soil salinity in"dry sowing and wet seedling"cotton field were deter-mined through the dynamic monitoring of soil water and salt and shallow groundwater.This study can provide a basis for the application of"dry sowing and wet seedling"technology in southern Xinjiang.Investigate soil salinization of cotton field under drip irrigation in Xi-aohaizi Irrigation District of Tumushuke City.Soil water and salt,groundwater depth were monitored across fields with varying degrees of salinization(non-salinized,low,medium,and high salinization)based on the findings.(1)Salinized soil in cotton fields with"dry sowing and wet seedling"constituted for 98.1%;Within this,low salinization accounted for 15.3%,medium salinization accounted for 40.5%,high salinization accounted for 39.2%,and salt soil accounted for 3.1%.The groundwater depth of 81.6%cotton fields in ir-rigation area is less than 3 m.(2)Compared to pre-sowing conditions,soil salinity at depths of 0～20 cm decreased by 38.4%,40.8%and 51.1%,respectively,and at 20～40 cm,it reduced by 39.3%,36.4%and 47.6%after harvesting in low,medium and high salinized cotton fields.The salt in non-salinized and low salinized soil is mainly distributed in 60～80 cm soil layer,while the salt in medium and high salinized soil is mainly accumulated in 20～40 cm soil layer.(3)A significant negative correlation was observed between soil salt content and groundwater depth across various depths(0～100 cm).After harvest,only the groundwater depth in the high salinized cotton field was less than 3 m.Groundwater depth in cotton fields is closely linked to the degree of soil salinization,shal-lower groundwater correlates with more severe salinization.The"dry sowing and wet seedling"of drip irrigation can significantly reduce the soil salt content in the topsoil of salinized cotton fields,especially in medium and high salinized cotton fields.Soil salinity of 0～100 cm decreased with the increase of groundwater depth.
"dry sowing and wet seedling"soil water and salt distributiongroundwater depthsoil water and salt transport
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