Water Production Function of Cotton Transplanted without Film under Subsurface Drip Irrigation in Xinjiang

A field experiment with different irrigation treatments was conducted on the water production function of transplantation cotton without film under subsurface drip irrigation.Results show that under subsurface drip irrigation,irrigation quantity and water consumption shows a good linear relationship,seed cotton yield,irrigation quantity and water consumption shows a parabolic relationship,while irrigation quantity is 444.26 mm,and water consumption ET is 540.73 mm,both cotton yield and irrigation production efficiency are higher.Taking into account synthetically seed cotton yield and irrigation production efficiency,in the northern of Xinjiang for arid area with average annual rainfall below 200 mm,the suitable irrigation quota range of transplantation cotton without film under subsurface drip irrigation is between 444.26 mm and 454.89 mm,which will provide theoretical basis for water-saving,high yield and efficient of subsurface drip irrigation in cotton.