The paper had analyzed natural condition of Daqing Area and distribution of plants of Potentilla in Daqing,and summarized 9 varieties of Potentilla.Based on field study and plot experiment and through observation of their biological traits,7 varieties of Potentilla had been identified suitable for landscaping;and evaluation had been conducted on their landscape application from the perspective of ornament,drought resistance,cold resistance,trampling resistance,adaptability to environment,coverage,and maintenance frequency.It was considered that their ornamental effect was quite good.They had certain drought resistance and cold resistance,and strong trampling resistance.These resistances of Potentilla bifurca L.var.glabrata Lehm.and Potentilla flagellaris Willd ex Schlecht.were stronger than that of Potentilla paradoxa Nutt.and Potentilla anserina L.,and then Potentilla chinensis Ser.,Potentilla discolor Bunge.and Potentilla tanacetifolia Willd ex Schlecht.were secondary.The pattern and structure of plants of Potentilla were coordinated and unified with the environment.The coverage of P.anserina L.,P.flagellaris Willd ex Schlecht.,and P.bifurca L.var.glabrata Lehm.was higher than that of P.paradoxa Nutt.and P.Tanacetifolia Willd ex Schlecht.and P.discolor Bunge..Plants of Potentilla didn't need to be maintained by men and they were ideal landscaping plants.On this basis,it had proposed suggestions on protection and development of landscaping plants of Potentilla in Daqing City.
