地表水与地下水灌溉对紫花苜蓿水分利用效率及生产特性的影响

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中图分类号：S816 文献标识码：A 文章编号：1007-0435（2026）03-1128-09

doi：10.11733/j.issn.1007-0435.2026.03.035

引用格式：，等．地表水与地下水灌溉对紫花苜蓿水分利用效率及生产特性的影响[J].草地学报，2026，34（3） ：1128—1136YANG He-yu，HAO Jun-feng，WANG Zhi-jun，etal.Effects of Surface Waterand Groundwater Irrigationon WaterUseEfficiency and Production Characteristics of Alfalfa[J].Acta Agrestia Sinica，2O26，34（3）：1128-1136

Abstract：In this study，alfalfa（Medicago satiua L.）was used as the experimental material. Through field control experiments and randomized block design，the efects of irigation water temperature （surface Water and groundwater） and irrigation amount （65%-75% field capacity， 55%-65% field capacity， 45%-55% field capacity）on yield，quality and irrigation water use effciency of alfalfa were studied.Hay yield，irigation water useeficiency，crude protein，ash，acid detergent fiber content and relative feeding value of alfalfa were analyzed，and the irigation methods with high yield，high qualityand high water effciencyof alfalfa were determined，in order to provide theoretical basis and practical guidance for optimizing irigation managementand efficient production of alfalfa. The main results are as follows，compared with groundwater irigation，surface water irrigation significantly increased hay yield （17.36%-21.72%） ，crude protein content （4.98%-7.07%） ， crude ash content （0.47%-1.25%） and relative feeding value （3.61%-5.53%） ，and decreased acid detergent fiber content （1.06%-2.98%） and neutral detergent fiber content （1.97%-4.42%） .Under mild drought stress，crude protein （20.33%） ），crudeash （8.22%） ，acid detergent fiber（22. 48% ），neutral detergent fiber （39.96% ） and relative feeding value（168.75）reached the optimal value. The irrgation water use eficiency of surface water treatment was the highest （2.73kg⋅m-3 ） under severe drought stress. Groundwater and severe drought stress synergistically inhibited root physiological activity，aggravated the decrease of yield and quality， and reduced water use efficiency.

Key words： Irrgation water temperature; Irrgation amount; Hay yield; Irigation water use efficiency;Nutri tional quality of alfalfa

紫花苜蓿（MedicagosatiuaL.）具有高蛋白、高消化率和适口性好等特点，作为重要的饲料作物被广泛应用于畜牧业和生态恢复领域[1]。（剩余19046字）