Abstract: Alear agricultural area in Xinjiang is located in the Taklimakan desert edge,with dry climate year-round,big water evaporation capacity,small rainfall,the climate type is unique. In recent years,with the speeding up of the agricultural industrialization,fruit-cotton interplanting has developed into local important agricultural production mode. Fruit,cotton intercropping can not only change the photosynthetic characteristics of cotton,affecting the canopy structure and accumulation distribution of dry matter,also can increase crop yield .To analyze the effects of planting patterns and water stress on soil water and yield of cotton,setting experiment at intercropping cotton field of Alar region from 2012 to 2013. The results showed that:① in budding and boll opening stage,the soil moisture decreased first,then increasing in 0-100 cm soil layer,soil moisture of 40-60 cm soil layer is the lowest. In blooming stage,soil moisture decreased first,then increased,and then decreased,the inflection point in 40-60 cm and 60-80 cm soil layer.② in budding stage,the soil moisture of M2W4,M2W2,M2W3,M1W4 is higher than others; in blooming stage,the soil moisture of M2W2 is higher; in boll opening stage,the soil moisture of planting pattern M2 and M3 is higher.③ Under the same pattern,there is the highest cotton yield per plant with 4 500 m³·hm^-2,same amount of irrigation treatment,the highest economic yield per plant is planting pattern M2. Considering with many aspects,planting cotton 1.0 m away from young wild jujube matching up with drop irrigation water volume 4 500 m³·hm^-2 conducive to maximize production potential,but also enhance single cotton yield.

Key words: jujube-cotton intercropping, planting patterns, water stress, soil moisture, yield per plant