| In order to explore cotton cultivation and management mode,which can enhance yield and water use efficiency in desert oasis region,a cluster cultivation experiment of 3 plants in a hole was carried out based on the traditional and improved cultivation of cotton and the clustered characteristic of desert plants to adapt the harsh environment.Moreover,a field experiment was carried out once again based on the best planting mode,which was chosen from the above plot experiment.The results of the plot experiment showed that,lint yield for 3 plants in a hole was up to 1 498 kg/hm2,which was 32.3% higher than the traditional cultivation for 1 plant in a hole and 23.0% higher than the improved one for 2 plants in a hole.Similarly,water use efficiency (WUE) of lint yield for 3 plants in a hole was 28.6% and 20.0% higher than 1 plant in a hole and 2 plants in a hole,respectively.Field experiment also showed that lint yield for 3 plants in a hole was 36.5% and 20.2% significantly higher than 1 plant in a hole and 2 plants in a hole,respectively (P<0.05). And its WUE of lint yield was 30% and 18.2% higher than the above both respectively.These results indicated that the cluster cultivation of 3 plants in a hole obviously enhanced the lint yield of cotton in desert oasis.And we also tried out the best planting mode for this cultivation,which was double row in strip shaped mode with a strip-row-hole spacing of 50 cm×30 cm×25～30 cm.In addition,that hole-spacing could be bigger if soil fertility and stand conditions were improved.This cultivation mode can be extended at marginal oasis. |