灌溉排水学报2026，Vol.45Issue(4)：1-8,8.DOI:10.13522/j.cnki.ggps.2025155
河西走廊洋葱节水灌溉制度研究
Optimal water-saving irrigation for onion production in the Hexi Corridor
摘要
Abstract
[Objective]The Hexi Corridor is a semi-arid region in Northwestern China,where water scarcity limits agricultural production,making improving irrigation water efficiency essential.Long-day onion is an important cash crop in the region,but its optimal water-saving irrigation remains elusive.This paper aimed to fill this knowledge gap,and experimentally explore suitable water-saving irrigation scheduling for long-day onion in this region.[Method]The experiment was conducted in a field,with the Hongjin red onion cultivar as the model plant.The experiment consisted of five irrigation treatments:3 000 m3/hm2(T1),3 675 m3/hm2(T2),4 350m3/hm2(T3),5 025 m3/hm2(T4),5 700m3/hm2(T5);the control was irrigation of 7 650 m3/hm2(CK).During the experiment,we measured the growth traits,yield and quality of the onion in each treatment.[Result]Compared with CK,reducing irrigation amount in the treatments did not result in significant effects on dry matter content,but reduced soil bulk density and increased soil porosity.Compared with CK,T1-T5 increased root activity by 6.72%,8.06%,31.45%,15.32%,and 46.77%,respectively,and reduced malondialdehyde by 4.93%,3.07%,28.95%,7.07%,and 62.57%,respectively.Reducing irrigation amount led to a decrease in onion yield.Compared with CK,T5 decreased onion yield and contents of soluble sugar,soluble protein,vitamin C,and onion oil by 11.19%,5.18%,2.54%,1.17%,and 2.70%,respectively,while increasing water use efficiency and irrigation water use efficiency by 11.59%and 19.21%,respectively.In T5,the discard rate of onion was 3.46%,while its water waste rate was only 3.28%.[Conclusion]Comprehensive analysis indicates that the optimal irrigation amount for long-day onion in the study region is 5 700 m3/hm2,which can be used as an improved irrigation strategy for red onion production in the Hexi Corridor and regions with similar soil type and climate.关键词
河西走廊/长日照洋葱/节水灌溉/水分利用效率/水分浪费率Key words
Hexi Corridor/long-day onion/water-saving irrigation/water use efficiency/water waste rate分类
农业科技引用本文复制引用
张俊峰,刘生明,安翠香,张婷,孙彩梅,张化生..河西走廊洋葱节水灌溉制度研究[J].灌溉排水学报,2026,45(4):1-8,8.基金项目
甘肃省农业科学院重点研发计划项目(2025GAAS23) （2025GAAS23）
甘肃省现代寒旱特色农业科技支撑项目(KJZC-2026-11) （KJZC-2026-11）
甘肃省科技技术创新引导计划项目(22CX8NA029) （22CX8NA029）
