亚热带植物科学2025，Vol.54Issue(5)：537-547,11.DOI:10.3969/j.issn.1009-7791.2025.05.007
水氮调控下干旱绿洲膜下滴灌马铃薯产量与耗水量变化
Dynamics of Potato Yield and Water Consumption under Water and Nitrogen Regulation with Mulched Drip Irrigation in Arid Oasis
摘要
Abstract
Three water deficit treatments were set up:water deficit during the seedling stage,during the tuber-formation stage,and during both stages.Three nitrogen application levels were additionally established in the experiment:high nitrogen N1(240 kg·hm-2),medium nitrogen N2(185 kg·hm-2),and low nitrogen N3(130 kg·hm-2).Based on meteorological factors and reference crop evapotranspiration during the potato growth season,the water consumption,crop coefficient,and yield variation patterns of potato were analysed under mulched drip irrigation were analyzed in drought oasis.The results showed that the reference crop evapotranspiration during the entire growth period of potato was 487 mm in 2023 and 509 mm in 2024,with the evapotranspiration intensity reaching the peak during tuber-formation stage,being 4.40 mm in 2023 and 4.29 mm in 2024.The water consumption increased with the increase in nitrogen application level,and the water consumption was the largest in the water deficit treatment during the seedling stage,ranging from 282.82 mm to 367.89 mm.The crop coefficient was directly proportional to the nitrogen application rate,and the water deficit period had a highly significant effect on the crop coefficient.The crop coefficients during the seedling stage,tuber formation stage,tuber expansion stage,and starch accumulation stage were 0.21 to 0.43,0.46 to 0.71,0.88 to 1.15,and 0.54 to 0.80,respectively.The medium nitrogen treatment with water deficit during the potato seedling stage could achieve stable yield,water savings,and reduced nitrogen use.This study quantified the water requirement of potato under drought oasis mulched drip irrigation at different growth stages under water and nitrogen treatments,providing a theoretical basis for optimising the water-saving irrigation system.关键词
马铃薯/参考作物蒸散量/作物系数/耗水量/干旱绿洲Key words
potato/reference crop evapotranspiration/crop coefficient/water consumption/drought oasis分类
农业科技引用本文复制引用
GUO Peng-fei,ZHOU Chen-li,LI Hai-yan,ZHANG Heng-jia..水氮调控下干旱绿洲膜下滴灌马铃薯产量与耗水量变化[J].亚热带植物科学,2025,54(5):537-547,11.基金项目
国家自然科学基金项目(52269008) （52269008）
甘肃省教育厅产业支撑计划项目(2022CYZC-51) （2022CYZC-51）
甘肃省重点研发计划项目(18YFINA073) （18YFINA073）
甘肃省科技支撑计划项目(1304FKCA095) （1304FKCA095）
