灌溉排水学报2026，Vol.45Issue(1)：17-24,8.DOI:10.13522/j.cnki.ggps.2025250
马铃薯生长、产量及品质对不同生育期水分调亏的响应
Effects of water deficit in different growing stages on growth,yield and quality of potato
摘要
Abstract
[Objective]Potato is a common crop grown in arid and semi-arid regions in Northwestern China where water-deficit irrigation has been widely used to save water without compromising crop yield and improve food quality.However,how implementing deficit irrigation at different growing stages of potato affects its growth and yield is not well understood.This paper aims to fill this technical gap.[Method]An experiment was conducted from April to September 2024 in a potato field under mulched drip irrigation at the Yimin Irrigation Experiment Station in Zhangye City,Gansu Province.It consisted of eight treatments:mild water-deficit irrigation by controlling soil moisture content at 55％to 65％of the field capacity(WD1,WD3,WD5,WD7),moderate water-deficit irrigation by controlling soil moisture content at 45％to 55％of the field capacity(WD2,WD4,WD6,WD8),and sufficient irrigation by maintaining soil moisture content at 65％to 75％of the field capacity(CK),at different growth stages of the potato.In the experiment,we measured growth traits,yield and quality of the potato.[Result]Compared with CK,water deficit at different growth stages significantly(P＜0.05)reduced plant height,stem diameter and leaf area,with the reduction degree increasing with the severity of water deficit,ranging from 5.33％to 14.31％,5.70％to 13.74％,and 5.53％to 20.29％,respectively.Compared with CK,mild or moderate water deficit at the seedling stage combined with a mild water deficit at the tuber formation stage increased yield by 2.26％to 8.77％.The WD1 had the highest starch content,which was 12.98％higher than that of CK.All water-deficit treatments had lower protein content than CK,with the WD8 showing the lowest(21.63％lower than CK).The sugar content reduction in all water deficit treatments was higher than that in CK,with the WD2 being the highest(33.93％higher than CK).The WD2 had the lowest vitamin C content,which was 21.48％lower than that of CK.Evaluation based on the entropy weight-TOPSIS method showed that a mild water deficit at the seedling stage(WD1)had the highest comprehensive score(0.605).[Conclusion]Implementing a mild water-deficit irrigation by keeping the soil moisture content at 55％-65％of the field capacity during the seedling stage is an optimal irrigation strategy for potato production in the Hexi Oasis in Northwestern China.关键词
水分调亏/生长特性/产量/品质/综合评价/马铃薯/河西绿洲Key words
water deficit regulation/growth characteristics/yield/quality/comprehensive evaluation/potato/Hexi Oasis分类
农业科技引用本文复制引用
赵艳,李哲,张恒嘉..马铃薯生长、产量及品质对不同生育期水分调亏的响应[J].灌溉排水学报,2026,45(1):17-24,8.基金项目
国家自然科学基金项目(52269008) （52269008）
山东省自然科学基金项目(ZR2024MC190) （ZR2024MC190）
聊城大学高层次人才科研启动项目(318042401) （318042401）
