【摘要】 [目的]寻求滴灌棉花不同生育期N、P肥配比的最佳施肥方案。[方法]在有机质含量较低、肥力中下、有效氮较贫的新疆垦区土壤上,应用6因子2次正交旋转组合设计,研究滴灌条件下随水施肥棉花不同生育期（苗蕾期、花铃前期、花铃后期）养分需求规律、N和P肥的最佳用量。[结果]在该试验土壤条件下,棉花各生育期施氮肥对棉花的增产效果非常明显,而磷肥仅在吸收较强的花铃后期表现出一定的增产作用。籽棉产量高于4 500 kg/hm²的各生育期N、P配比的优化施肥方案依次是:苗蕾期氮（N₂）90.93～97.44kg/hm²,磷（P₂O₅）15.53～19.44 kg/hm²;花铃前期氮（N₂）163.31～168.08 kg/hm²,磷（P₂O₅）27.84～30.77 kg/hm²;花铃后期氮（N₂）41.37～45.71 kg/hm²,磷（P₂O₅）66.96～72.65 kg/hm²。[结论]该研究为确定棉花滴灌专用肥的配方及科学施用提供依据。更多还原

【Abstract】 [Objective]The study aimed to seek for optimum fertilization scheme with different ratio of N and P fertilizers for cotton in different growth period under the drip irrigation condition.[Method]On the soil in Xinjiang reclamation area with lower organic content,middle and lower fertility and more poor effective-nitrogen,the 6 factor secondary orthogonal rotation design was applied to study the nutrient need rule and the optimum rate of N and P fertilizers for cotton fertilized along with watering under drip irrigation in different cotton growth period（seedling and bud stage,prophase and anaphase of flower and bell）.[Result]Under the soil condition of this test,N fertilizer application had obvious yield-increasing effect on cotton in different growth period and P fertilizer application only showed some yield-increasing effect on the cotton in the anaphase of flower and bell when the P could be absorbed strongly.The optimized fertilization scheme with different ratio of N and P for getting the cotton seed yield of 4500 kg/hm² in different growth period in order was follows:applying N at 90.93 -97.44 kg/hm² and P（P₂O₅） at 15.53 - 19.44 kg/hm²;in seedling and bud period,applying N at 163.31 - 168.08kg/hm² and P at 27.84 -30.77 kg/hm² in prophase of flower and bell and applying N at 41.37 -45.71 kg/hm² and P at 66.96 -72.65 kg/hm² in anaphase of flower and bell.[Conclusion]This study provided the reference basis for determining the formula and its scientific application of special fertilizer for the cotton under the drip irrigation condition.更多还原