Effect of Different Irrigation Limits on Alfalfa Production Performance in Horqin Sandy Land

doi:10.11733/j.issn.1007-0435.2024.06.033

Acta Agrestia Sinica ›› 2024, Vol. 32 ›› Issue (6): 1968-1973.DOI: 10.11733/j.issn.1007-0435.2024.06.033

Effect of Different Irrigation Limits on Alfalfa Production Performance in Horqin Sandy Land

SUN Tie-nan¹, LI Mao-na², CHEN Fen², ZHANG Yu-xia¹, WANG Xian-guo²

1. College of Prataculture, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028000, China;
2. College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China

Received:2023-10-31 Revised:2023-11-30 Published:2024-06-29

不同灌溉下限对科尔沁沙地紫花苜蓿生产性能的影响

孙铁男¹, 李茂娜², 陈芬², 张玉霞¹, 王显国²

1. 内蒙古民族大学草业学院, 内蒙古通辽 028000;
2. 中国农业大学草业科学与技术学院, 北京 100193

通讯作者: 李茂娜,E-mail:limaona2020@cau.edu.cn
作者简介:孙铁男(1999-)，男，汉族，内蒙古赤峰人，硕士研究生，主要从事草地节水灌溉研究，E-mail:2625753784@qq.com
基金资助:
国家重点研发计划项目“内蒙古典型农牧交错区优势特色产业关键技术集成与示范”(2022YFD1601202)；国家牧草产业技术体系专项(CARS-34)资助

Abstract

Abstract: In order to investigate the effects of different irrigation limits on yield,quality and water use efficiency of alfalfa (Medicago sativa L.) in Horqin Sandy Land,three irrigation treatments based on soil water limits were designed including 70% to 75% of field capacity (W1),60% to 65% of field capacity (W2) and 50% to 55% of field capacity (W3). The results showed that the higher irrigation limit significantly improved the water consumption (ET_a) and annual yield of alfalfa,but significantly decreased the water use efficiency (WUE). The relationships between ET_a,annual yield and WUE were parabolic. Compared with W1,W2 only reduced annual yields by 5.5%,but saved water by 22.7% and increased WUE by 14.5%. Irrigation limit had no significant effect on crude protein content,but caused a significant increase in relative feed value. Based on performance in yield,quality and WUE,using grey correlation analysis method found that 60%~65% of field capacity was recommended as the irrigation lower limit for water management of alfalfa in Horqin Sandy land.

Key words: Alfalfa, Irrigation limit, Yield, Quality, Water use efficiency

摘要： 为了探究不同灌溉下限对科尔沁沙地紫花苜蓿(Medicago sativa L.)产量、品质及水分利用效率(Water use efficiency，WUE)的影响，本文以雨养(CK)作为对照，设置了70%~75%田间持水量(Field capacity，FC)(W1)，60%~65% FC (W2)，50%~55% FC(W3) 3个灌溉下限，试验结果表明：随着灌溉下限的增加，苜蓿耗水量与年产量均显著增加，但WUE显著降低，且耗水量与年产量、WUE间均呈抛物线关系；相比于W1，W2仅减产5.5%，但可节水22.7%且WUE提高14.5%；不同灌溉下限对粗蛋白含量(Crude protein，CP)无显著性影响，但灌溉下限的降低会引起相对饲喂价值(Relative feed value，RFV)明显升高。基于灰色关联度分析，结合产量、品质及WUE的表现，推荐60%~65% FC为科尔沁沙地苜蓿水分管理的灌溉下限。

关键词: 紫花苜蓿, 灌溉下限, 产量, 品质, 水分利用效率

CLC Number:

S541.9

SUN Tie-nan, LI Mao-na, CHEN Fen, ZHANG Yu-xia, WANG Xian-guo. Effect of Different Irrigation Limits on Alfalfa Production Performance in Horqin Sandy Land[J]. Acta Agrestia Sinica, 2024, 32(6): 1968-1973.

孙铁男, 李茂娜, 陈芬, 张玉霞, 王显国. 不同灌溉下限对科尔沁沙地紫花苜蓿生产性能的影响[J]. 草地学报, 2024, 32(6): 1968-1973.

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Effect of Different Irrigation Limits on Alfalfa Production Performance in Horqin Sandy Land

不同灌溉下限对科尔沁沙地紫花苜蓿生产性能的影响

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