Main resources of ornamental grasses and its evaluation in Shaanxi Province

【Objective】 The study evaluated wild resources of ornamental grasses available in Shaanxi Province and provided some references about their development.【Method】 50 ornamental grasses resources were evaluated using gray-correlation analysis based on the primary investigation and research of resources of wild ornamental grasses in Shaanxi Province,6 evaluated characters of the ornamental grasses included habitat,fastness,ornamental value,height,color of leaf and inflorescence.【Result】 Arund donax,Miscanthus sacchariflorus,Typha minima,Kochia scoparia,etc had better ornamental effects and their correlation degree with the ideal species were 0.791 7,0.773 0,0.796 4 and 0.822 2;88% of 32 gramineous ornamental grasses could resist drought,and the correlation degree of only 7 species were lower than 0.6;The correlation degree with ideal species of 38 in involved ornamental grasses of 50 were higher than 0.6.【Conclusion】 Arund donax,Miscanthus sacchariflorus,Typha minima,Kochia scoparia,etc can be used for landscaping directly;Most of 50 ornamental grasses have potential value,and drought-resistant ornamental plants can be developed from gramineous ornamental grasses.