摘要：Southern Xinjiang is in shortage of fresh water resources and riches in salty water resources, such as farmland drainage water, but poor in exploration and utilization. To evaluate the applicability of irrigation with farmland drainage water in the southern Xinjiang, experiments were conducted to investigate the characteristics of soil water and salt transport, and the effects on cotton seed germination and seedling growth under saline water irrigation. The salinity of farmland drainage water significantly affected on soil salt transport in the horizontal and vertical directions, and 2 g/L was the cutoff point for horizontal and vertical changes in the soil salt. Soil water infiltration decreased with increasing salinity of farmland drainage water under the same pressure head conditions, whereas also with decreasing pressure head. Soil saturated hydraulic conductivity (Ks) initially increased and then decreased after irrigation with drainage water of different salinity levels, while the opposite trend was found for the model parameter ^c. Irrigating with drainage water of 3 g/L to 5 g/L salinity slightly inhibited cotton seed germination, while with drainage water of salinity greater than 5 g/L strongly inhibited the seed germination. The suitable salinity of farmland drainage water was lower than 4 g/L, which had little impact on cotton seedling growth.
