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本文报道了北疆特早熟棉区皮棉１５００ｋｇ·ｈｍ－２的棉花需肥规律、施氮适宜时期。试验结果表明，北疆春播早熟品种，棉株一生吸收积累养分的变加速率变化规律，与内地棉区广泛种植的夏播早熟品种中棉所１６和春播中熟品种中棉所１２比较，介于他们之间。加速率峰值出现在出苗后第４６ｄ，应重施基肥，以促进棉花前期生长。如果追肥，结合北疆降水很少、靠天山雪水灌溉的特点，适宜在头水前即蕾期进行。中等地力棉田氮肥可以全部做基肥
This paper reports the cotton requirement law of 1500kg · hm-2 lint in special precocious cotton area in north Xinjiang and the suitable period of nitrogen application. The results showed that the early spring varieties of spring sowing in northern China had a tendency of increasing the rate of change of nutrient absorption and accumulation throughout the life of the cotton plant. Compared with the cotton variety CIMC 16 which is widely planted in the cotton area of China, Between them. The peak acceleration appeared 46 days after emergence, should be re-applied basal fertilizer to promote cotton pre-growth. If topdressing, with little precipitation in northern Xinjiang, by the Tianshan snow irrigation characteristics, suitable for head water before the bud stage. Medium force cotton nitrogen fertilizer can all do base fertilizer