中国农业大学学报2026，Vol.31Issue(3)：97-109,13.DOI:10.11841/j.issn.1007-4333.2026.03.09
不同播量一年生苜蓿与燕麦混播对草地生产性能和营养价值的影响
Effects of different sowing rates of annual Medicago scutellata and Avena sativa mixed sowing on grassland productivity and nutritional value
摘要
Abstract
To investigate the optimal seeding rates of annual Medicago scutellata and Avena sativa mixed sowing suitable for the irrigation areas in Northwest China and their effects on grassland productivity and nutritional value,a field trial was conducted in the Yellow River diversion irrigation area of Ningxia in 2024.A.sativa seeding rate was fixed at 120.0 kg/hm2 and were mixed with six different seeding rates for annual M.scutellata(12.0,18.0,24.0,30.0,36.0 and 42.0 kg/hm2,designated as IM1,IM2,IM3,IM4,IM5 and IM6).Monoculture of annual M.scutellata(SM,30.0 kg/hm2)and monoculture of A.sativa(SO,180.0 kg/hm2)served as controls.Grassland productivity,nutritional quality,and interspecific relationships were systematically determed through two successive crop cycles of sowing and harvesting.The results indicated that:1)Mixed cropping significantly enhanced grassland productivity.Among all the treatments,IM4 performed the best,with the highest total dry matter production(20.93 t/hm2)across two harvests,representing a 24.2％increase over A.sativa monoculture and a 44.7％rise in crude protein yield(2.36 t/hm2).This treatment achieved land equivalency ratio of 1.33,and had 33％increase in land utilization efficiency.2)While the IM6 treatment had the highest crude protein content and relative feeding value(25.3％and 12.6％higher than monoculture respectively),the IM4 treatment achieved a better balance between yield(20.93 t/hm2)and quality(11.48％crude protein content).In summary,mixed sowting of 30.0 kg/hm2 of annual M.scutellata with 120.0 kg/hm2 A.sativa can synergistically achieve a high yield and superior quality while efficiently utilization land resources.This approach provides a theoretical foundation and practical planting solution for establishing ecological agro-pastoral systems in arid irrigated areas.关键词
燕麦与一年生苜蓿混播/灌区/混播比例/生产力/土地当量比Key words
mixed sowing of annual Medicago scutellata and Avena sativa/irrigation area/the proportion of mixed sowing/productivity/land equivalent ratio分类
农业科技引用本文复制引用
高薇薇,王斌,苏煜钊,王腾飞,张译尹,兰剑..不同播量一年生苜蓿与燕麦混播对草地生产性能和营养价值的影响[J].中国农业大学学报,2026,31(3):97-109,13.基金项目
宁夏高等学校一流学科建设(草学学科)项目(NXYLXK2017A01) （草学学科）
宁夏回族自治区重点研发计划项目(2021BBF02001) （2021BBF02001）
宁夏农林科学院科技协作项目(NGSB-2021-15-02) （NGSB-2021-15-02）
