草坪草引种适应性的综合评判

以地下植物量、枝条密度、再生速度、越夏率、质地和成坪速度为主要指标，应用灰色系统理论中关联度分析方法，对兰州地区所引的８个草坪草品种的生态适应性进行了综合评价。结果表明：在多年生黑麦草４个品种中，荷兰的Ｂａｒｃｒｅｄｏ（ｒ２＝０．７８）＞美国Ｐｉｃｋｓｅｅｄ的Ｃｕｔｔｅｒ（ｒ３＝０．７１）＞丹麦的Ｆｉｇａｒｏ（ｒ１＝０．７０）＞美国Ｊａｃｋｌｉｎ的Ｊ６１ＰＲ２７６（ｒ４＝０．６５）；在多年生草地早熟禾４个品种中，荷兰的Ｄａｒｏｎ（ｒ２＝０.８２）＞美国Ｐｉｃｋｓｅｅｄ的Ａｍ ｅｒｉｃａ（ｒ３＝０.７７）＞丹麦的Ｐａｎｄｕｒｏ（ｒ１＝０.７１）＞美国Ｊａｃｋｌｉｎ的Ｊ６１ＫＢ２７５（ｒ４＝０.５４）。综合评判结果与试验地观测结果相吻合。

Study of Comprehensive Evaluation of Turfgrass Introduction Adaptability

According to root quantity, shoot density, reproduction rate, oversummer percent, texture, establishment rate, ecological adaptability of eight turfgrass varities in Lanzhou area have been evaluated by grey system method. The results showed that among perennial ryegrass, Barcredo (r_2=0.78) is the best, followed by Cutter (r_3=0.71), Figazo (r_1=0.70) and J61pr276 (r_4=0.64), and among kenturchy bluegrass, Baron (r_2=0.77) is the best, followed by Amercia (r_3=0.77), Panduro (r_1=0.71) and J61kb275 (r_4=0.54). The experiment evaluated results are basically identical with the results. The grey system method can be used to evaluate the turfgrass introduction adaptability.