【摘要】 为明确降低不同水平灌水量对新疆昌吉干旱区棉花生长发育、产量构成及品质的影响。本研究以新疆昌吉老龙河“中棉113”种植区为试验对象，自盛蕾期始至棉田停止灌溉，根据当地常规全期灌水量4 530 m~3/hm~2，设置6个不同梯度4 530 m~3/hm~2(100%CK)、4 130 m~3/hm~2(90%CK)、3 806 m~3/hm~2(80%CK)、3 425 m~3/hm~2(70%CK)、3 086 m~3/hm~2(60%CK)、2 436 m~3/hm~2(50%CK)灌水处理，对比分析降低不同水平灌水量对棉花农艺性状、干物质量、产量、品质及灌溉水利用率的影响。结果表明：常规灌水量对棉花株高和茎粗具有促进作用，70%CK与80%CK灌水处理对棉花的蕾花形成、根系发育，棉花根冠比具有提高作用，能够保障较高的棉花产量，同时提高灌溉水利用效率，节约农业用水。70%CK灌水处理可以促进棉花各品质指标均衡发展，整体提高棉花的纤维质量。新疆昌吉干旱区棉花种植，降低全生育期灌水量至3 425～3 806 m~3/hm~2之间，促进棉花营养生长与生殖生长的均衡发展，保障高产的同时，提高灌溉水利用率。更多还原

【Abstract】 To determine the effects of reduced irrigation levels on cotton growth, yield composition, and fiber quality in the arid region of Changji, Xinjiang. The experiment was conducted in a cotton field located in the Laolonghe area of Changji City, Xinjiang by using the "Zhongmian 113" cotton variety. From the onset of the full budding stage to the end of the irrigation period, six irrigation treatments were applied based on the local conventional total irrigation volume of 4 530 m~3/hm~2(CK):4 530 m~3/hm~2(100%CK)、4 130 m~3/hm~2(90%CK)、3 806 m~3/hm~2(80%CK)、3 425 m~3/hm~2(70%CK)、3 086 m~3/hm~2(60%CK) and 2 436 m~3/hm~2(50%CK) of the conventional irrigation amount. The results showed that the conventional irrigation level significantly promoted plant height and stem diameter. Irrigation treatments at 70% CK and 80% CK of the conventional level enhanced bud and flower development, root system growth, and root-to-shoot ratio. These treatments maintained relatively high cotton yields while improving irrigation water use efficiency and saving agricultural water resources. The 70% CK treatment notably promoted balanced development of all fiber quality parameters, resulting in an overall improvement in fiber quality. In the arid region of Changji, Xinjiang, reducing the total irrigation volume during the full cotton growth period to between 3 425 and 3 806 m~3/hm~2 can promote a balanced development between vegetative and reproductive growth, ensure high yields, and improve irrigation water use efficiency.更多还原