中国草地学报2025，Vol.47Issue(12)：11-20,10.DOI:10.16742/j.zgcdxb.20250061
放牧对蓝茎冰草生产力及其与杂草关系的影响
Effect of Grazing on the Productivity of Old World Bluestem Grass and Relationship with Weeds
摘要
Abstract
Grazing is one of the effective strategies for managing weed dynamics in grassland ecosys-tems.However,the regulatory mechanisms governing forage production and weed dynamics under grazing disturbance remain poorly understood.Therefore,this study investigates the effects of grazing manage-ment on the forage productivity of Bothriochloa bladhii(Retz)S.T.Blake,a perennial grass species,and its relationship with weeds in a cultivated grassland in Lubbock County,Texas,USA.Results indicated that:(1)Grazing enhanced the sensitivity of forage productivity,fibers and CP to weeds.(2)Grazing remarkably decreased the weed coverage(61.9%-81.4%,P<0.05)and species richness(23.2%-49.9%,P<0.01).The inhibitory effects accumulated over time.Consequently,grazing enhanced the community stability and weed competitiveness of Bothriochloa bladhii.(3)Grazing increased the forage equivalent unit of Bothriochloa bladhii,and improved its quality.The findings provide a theoretical basis for develop-ing appropriate grazing and weed management strategies for integrated crop-livestock production systems.关键词
最优放牧/物种多样性/生产力/稳定性/作物-家畜综合生产系统Key words
Optimal grazing/Species diversity/Productivity/Stability/Integrated crop-livestock pro-duction system分类
农业科技引用本文复制引用
CHEN Jingmin,LI Yue,NING Jiao,Philip Brown,Paul Green,HOU Fujiang..放牧对蓝茎冰草生产力及其与杂草关系的影响[J].中国草地学报,2025,47(12):11-20,10.基金项目
美国农业部可持续农业研究和教育项目(IRT17R50) （IRT17R50）
