Initial assessment of sixteen perennial grass species in the upper Datong River

doi:10.11686/cyxb2016388

Abstract

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. Phalaris arundinacea 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.

JING Mei-Ling, MA Yu-Shou, LI Shi-Xiong, WANG Yan-Long. Initial assessment of sixteen perennial grass species in the upper Datong River[J]. Acta Prataculturae Sinica, 2017, 26(6): 76-88.

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