草业学报2017，Vol.26Issue(6)：76-88,13.DOI:10.11686/cyxb2016388
大通河上游16种多年生禾草引种试验研究
Initial assessment of sixteen perennial grass species in the upper Datong River
摘要
Abstract
To identify potentially suitable gramineae species which could be used to enrich grassland on recovering black-soil flood zone in the upper Datong River in the Qilian Mountains,Qinghai Province,16 forage species suitable for cultivation on the Tibetan Plateau were assessed in 2012.Phenology,yield and nutritional value of all species were studied in a replicated trial arranged in a randomised block design over a 3 year period.Phalarisarundinacea Sp.Pl.was not able to survive the winter.Elymus sibiricus cv.Qingmu No.1,E.sibiricus cv.Tongde,E.sibiricus cv.chuancao No.2 were unable to completed their life cycles.Among the remaining species,the aboveground biomass was highest in E.sibiricus cv.Qingmu No.1 (479.13 g/m2) followed by Elymus nutans cv.Aba.The seed yield of E.nutans cv.Aba was higher than that of any other species (98.30 g/m2).Forage quality,Kengyilia thoroldiana had high nutritional value in 2013-2014.Thus,the height,aboveground biomass,underground biomass,seed yield and quality of 15 forage species were analyzed by membership function.E.nutans cv.Aba,Poa pratensis var.anceps cv.Qinghai,Poa pratensis cv.Qinghai,Festuca sinensis cv.Qinghai and Elymus sibiricus cv.Tongde were identified as the most useful species;they adapted well to environmental conditions in the upper Datong River.关键词
祁连山/大通河上游/引种试验/地上植物量Key words
Qilian Mountain/upper area of Datong River/introduction experiment/the aboveground biomass引用本文复制引用
景美玲,马玉寿,李世雄,王彦龙..大通河上游16种多年生禾草引种试验研究[J].草业学报,2017,26(6):76-88,13.基金项目
国家科技支撑计划课题“祁连山天然草地生态系统修复与保护技术集成示范”(2012BAC08B03),青海省科技支撑计划课题“祁连山退化草地恢复及可持续利用技术集成示范”(2015-SF-129)和2015年祁连山生态保护与建设综合治理工程科技示范项目“黑土滩(坡)治理技术集成示范”(2015-Q-1)资助. （2012BAC08B03）
