Abstract: 【Objective】 To determine the irrigation scheme that will be suitable for dry sowing and wet-out cotton under double-film mulching conditions. 【Methods】 By carrying out field experiments in Shaya County, Aksu City, Xinjiang.A total of six treatments were set: three irrigation quota treatments (S₁:675 m³/hm²,S₂:900 m³/hm²,S₃:1 125 m³/hm²), two drip frequency treatments (S₄:675 m³/hm²+450 m³/hm²,S₅:675 m³/hm²+300 m³/hm²+150 m³/hm²) and one spring irrigation control treatment (CK:180 mm). And then the effects of different irrigation quotas and drip frequencies on soil water and salt transport, hydrothermal effect and seedling emergence rate were analyzed. 【Results】 (1) In 0-40 cm soil layer, the drip frequency was the same. With the increase of irrigation quota, the average soil moisture content gradually increased, which was S₁ < S₂ < S₃; With the same irrigation quota, the average soil moisture content increased gradually with the increase of drip frequency, showing S₅ > S₄ > S₃; The average soil moisture content of CK treatment was significantly lower than that of dry sowing and wet-out treatment. (2) In 0-40 cm soil layer, the drip frequency was the same, the larger the irrigation quota, the higher the soil desalination rate after irrigation; With the same irrigation quota, the less drip frequency, the higher soil desalination rate; The desalination rate of CK treatment was significantly higher than that of dry sowing and wet-out treatment. (3) In 0-40 cm soil layer, the drip frequency was the same. With the increase of irrigation quota, the daily average soil temperature gradually decreased, which was S₁ > S₂ > S₃; With the same irrigation quota, the daily average soil temperature decreased gradually with the increase of drip frequency, showing S₃ > S₄ > S₅; The daily average soil temperature of CK treatment was not significantly different from that of S₁ treatment, and was significantly higher than that of other dry sowing and wet-out treatments. (4) The emergence rate increased with the decrease of irrigation quota and decreased with the decrease of drip frequency. The emergence rate of each treatment was as follows: CK ≈ S₁ > S₂ ≈ S₅ > S₄ > S₃. 【Conclusion】 According to the soil water and salt, ground temperature and seedling emergence of each treatment, S₁(675 m³/hm²) is the best seedling emergence water treatment.