Effects of sub-soil plastic film mulch on soil water and salt content and water utilization by winter wheat under different soil salinities

Winter wheat yields in dryland saline soils are limited by water shortages and soil salinity. Mulching is one approach to ameliorate water deficit and salt stress. A two-year field experiment was conducted in North China’s Bohai Lowland Plain to evaluate the effects of sub-soil plastic film mulch on soil moisture, soil salinity, and water use efficiency of winter wheat (Triticum aestivum L.) under three levels of soil salinity. The results...