湘南地区低维护地被植物引种栽培及应用评价研究

Introductive cultivation and application assessment of low-maintenance groundcover plants in Southern Hunan Province

为丰富湘南地区园林绿化和生态建设低维护植物多样性种类,利用灰色关联分析法对引种试验的18种地被植物在湘南地区的生物学特性、物候期及生长适应性进行观测分析,并利用设定与观赏性、低维护性相关的6个评价指标衡量做出系统评价。结果可知:引种试验的18种地被植物中观赏价值达Ⅰ类(关联度值在0.80以上)、Ⅱ类(关联度值在0.70~0.79)、Ⅲ类(关联度值在0.60~0.69)、Ⅳ类(关联度值在0.60以下)的分别为2种、6种、7种和3种;低维护性达Ⅰ类(关联度值在0.80以上)、Ⅱ类(关联度值在0.70~0.79)、Ⅲ类(关联度值在0.60~0.69)、Ⅳ类(关联度值在0.50~0.59)的分别为8种、7种、3种和0种。Ⅰ类可以作为湘南地区低维护地被植物推广品种,Ⅱ类为粗放管理地被植物应用。研究结果为湘南地区引种栽培低维护地被植物提供了参考依据。

To improve the diversity of low-maintenance plants for landscaping and ecological construction in Southern Hunan Province,the selected 18 groundcover plants were studied by use of the gray relation analysis method,with regard to their biological characteristics,phenology and growth adaptability.In connection with the current study,six indicators were selected for the systematic assessment on the ornamental and the low-maintenance.Among the 18 plants selected for this introduction test,2 species have reached the ornamental value class I(correlation value,or CV>0.80),6 species in class II(CV=0.70~0.79),7 species in class III(CV=0.60~0.69)and 3 species in class IV(CV<0.60);while 8 species have reached the low maintenance class I(CV>0.80),7 species in class II(CV=0.70~0.79),3 species in class III(CV=0.60~0.69)and no species in class IV(CV=0.50~0.59),respectively.It is concluded that class I plants can be adapted as the promoted varieties of low-maintenance ground cover plants in Southern Hunan Province,while class II for the application of extensive management.The current study offers the reference for the introduction and cultivation of low-maintenance groundcover plants in Southern Hunan Province.