中国草地学报2025，Vol.47Issue(2)：104-114,11.DOI:10.16742/j.zgcdxb.20230387
不同紫花苜蓿品种对土壤理化性质的影响
Effect of Different Alfalfa Cultivars on Soil Physicochemical Properties
摘要
Abstract
Soil degradation poses a critical challenge to ecological sustainability in China´s Loess Pla-teau.This study systematically evaluated seven alfalfa(Medicago sativa)cultivars-Sitle(ST),Derby(DB),Defi(DF),Rest(RS),Vela(VL),Famous(FS),and Longdong(LD)-in Jiuhuagou watershed.We assessed their impacts on soil physicochemical properties and identified optimal cultivars for local culti-vation,providing theoretical support for the sustainable agriculture and ecological restoration in the Loess Plateau region.The results showed that significant differences(P<0.05)in soil bulk density(SBD),soil moisture content(SM),soil organic carbon density(SOCD),soil available nitrogen density(SAND),soil total nitrogen density(STND),soil available phosphorus density(SAPD)and soil total phosphorus density(STPD)among of 0-100 cm soils cultivated with the seven alfalfa cultivars.In the 0-40 cm soil layer,SBD and SM of the alfalfa grassland showed a gradual increasing trend across all cultivars.Within the 0-100 cm soil profile,SOCD,SAND,STND,SAPD,and STPD exhibited a decreasing trend with increasing depth.Grass yield was significantly positively correlated with SAPD,STPD and STND(P<0.05),while displaying a signifant negative correlation with the ratio of STND∶STPD.Principal compo-nent analysis showed that VL cultivar exhibited the most favorable comprehensive soil quality status.In conclusion,the VL cultivar is recommended as the optimal choice for local cultivation to advance sustain-able agricultural practices and ecological restoration in the Loess Plateau region.关键词
黄土高原/土壤质量/主成分分析/苜蓿品种Key words
Loess Plateau/Soil quality/Principal component analysis/Alfalfa cultivar分类
农业科技引用本文复制引用
段景章,赵海东,张建伟,肖金玉,郭正刚,侯扶江,张自和..不同紫花苜蓿品种对土壤理化性质的影响[J].中国草地学报,2025,47(2):104-114,11.基金项目
国家自然科学基金国际合作项目(32161143028) （32161143028）
国家自然科学基金项目(U21A20242) （U21A20242）
甘肃省草原生态治理修复科技支撑项目(202302) （202302）
