广东野生杜鹃花资源调查及园林开发探讨

Investigation on germplasm resources and garden utilization of wild Rhododendron in Guangdong

为摸清广东省野生杜鹃花分布现状,加强杜鹃花在园林上的开发,通过野外实地调查与取样、查阅文献和标本相结合的方法,研究了广东省杜鹃花属植物资源现状、分布特征与原生土壤的理化性质。结果表明:广东省野生杜鹃花有53种,分布广泛且海拔低(500 m以下)的杜鹃花种类有紫花杜鹃、满山红、华丽杜鹃、毛棉杜鹃、岭南杜鹃、太平杜鹃、鹿角杜鹃、映山红、广东杜鹃等,土壤pH值在4.31~5.88之间,均值为4.85,Ec值在0.88~2.47 mS/cm之间,均值为1.57 mS/cm。在此基础上,对广东野生杜鹃花在园林的开发利用方面进行了探讨,并给出了建议。

In order to figure out actual distribution of wild Rhododendron in Guangdong province and strengthen their development in the field of landscape architecture,actual resources of plants in genus Rhododendron L.,their distribution features and physicochemical properties of original soil were studied,by the methods of field investigation and sampling,combined with literatures and specimens. The results show that the species of wild Rhododendron in Guangdong province is 53. And Rhododendron amesiae,R. championae,R. eudoxum,R. kwangtungense,R. latoucheae,R. moulmainense,R. simsii,R. mariae locate below altitude of 500 meters and distributed widely. The value of soil p H is between 4.31 and 5.88,and its average value is 4.85. The value of Ec is between 0.88 and 2.47,and its average value is 1.57. Finally,the development of wild Rhododendron in Guangdong province in the aspects of landscape architecture was discussed,and some suggestions were proposed.