【Objective】Water and fertilizer are two key factors limiting crop growth and yield in arid area in Xinjiang. In the present study, a field experiment was carried out to investigate the different irrigation frequency and irrigation time on maize growth and yield. Meanwhile, the nutritional status of nitrogen and phosphorus were also explored and the nutrition utilization efficiency was analysised in drip irrigation condition.In irrigation quota optimization of 6750 m3/hm2 by setting the critical period of ma...