perennial grass

Stout erect perennial grass of northern parts of Old World having silky flowering spikes; widely cultivated for pasture and hay; naturalized in North America.

旧大陆北部多年生粗壮直立草本植物，绢状花穗；广泛培植，用作牧草和干草；已在北美落户。

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tall perennial grass of pampas of south america having silvery plumes and growing in large dense clumps.

南美多年生蒲苇草，有银色的羽状花序，丛生且稠密。

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European perennial grass widely cultivated for pasture and hay and as a lawn grass.

欧洲多年生草，广泛栽培用作牧草、干草和草坪草。

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( 4) After Temperate Grassland cultivation distributing in the middle of Qilian Mountain plant perennial grass-alfalfa for 7 years, SOC and TN contents significantly increased by 63-118% and 23-49%.

祁连山中段开垦的温性草原，经退耕种植多年生牧草&苜蓿7年后，土壤有机碳、全氮含量分别显著提高了63-118%，23-49%。

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Primary productivity and community dynamics of mixed perennial grass pasture

多年生禾草混播草地初级生产力及群落动态研究

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The Gynostemma Pentaphyllum Makino is a perennial grass liana of the Gynostemma Pentaphyllum Makino genus of the curcurbitaceae.

绞股蓝（Gynostemma pentaphyllum Makino）为胡芦科绞股蓝属多年生草质藤本植物。

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