草业学报2026，Vol.35Issue(5)：113-125,13.DOI:10.11686/cyxb2025204
紫花苜蓿/无芒雀麦间作对草地生产性能和土壤理化特性的影响
Effects of different inter-row planting ratios of alfalfa and smooth brome on grass production performance and soil physicochemical properties
摘要
Abstract
To determine the optimal inter-row planting ratio of alfalfa(Medicago sativa)and smooth brome(Bromus inermis)for cultivation in the semi-arid region of Ningxia,a field study was conducted with single-crop alfalfa(CKM)and smooth brome(CKB)as controls.The treatments consisted of five different inter-row planting ratios of M.sativa(M)and B.inermis(B):3∶1(M3B1),2∶1(M2B1),1∶1(M1B1),1∶2(M1B2),and 1∶3(M1B3).The agronomic traits and nutritional quality of both species and soil nutrient contents were measured and analyzed under these different planting patterns.It was found that the 2∶1 inter-row planting ratio(M2B1)achieved the best performance in terms of yield,quality,and soil nutrient accumulation.Compared with CKM,the M2B1 treatment increased the number of alfalfa branches by 18.36%.Compared with CKB,the M2B1 treatment enhanced smooth brome plant height and leaf area by 22.40%and 37.03%,respectively.The mixed hay yield under M2B1 reached 17.70 t·ha-1,comparable to that of CKM.In terms of nutritional quality,the M2B1 treatment increased the crude protein content by 33.83%and decreased the neutral detergent fiber content by 5.12%,compared with CKB.Soil analysis revealed that the M2B1 treatment increased the soil organic matter content by 2.13%and 3.90%compared with that in CKM and CKB,respectively,and the alkaline-hydrolyzable nitrogen content by 16.53%and 37.33%,respectively.The results of a redundancy analysis indicated that mixed yield was positively correlated with soil available potassium and alkali-hydrolyzable nitrogen contents.In conclusion,the 2∶1 inter-row planting ratio of alfalfa and smooth brome in Ningxia optimized land resource utilization efficiency,productivity,and soil nutrient accumulation.关键词
紫花苜蓿/无芒雀麦/间行种植/生产性能/土壤养分Key words
Medicago sativa/Bromus inermis/inter-row planting/production performance/soil nutrients引用本文复制引用
李小聪,闫聚辉,王星,胡鹏飞,叶雨浓,伏兵哲..紫花苜蓿/无芒雀麦间作对草地生产性能和土壤理化特性的影响[J].草业学报,2026,35(5):113-125,13.基金项目
国家自然科学基金项目(32260349)和宁夏回族自治区2021年青年拔尖人才培养项目资助. （32260349）
