采用样线和样方相结合的方法对大别山区的4条样线和13个样方以及皖南山区的1条样线和9个样方内金灯藤（Cuscuta japonica Choisy）的生长状况、生境和寄主植物种类等进行了调查和分析。结果表明：金灯藤在大别山区和皖南山区的所有寄主植物上生长良好，寄生分枝较多，多生长在海拔400～900 m的丘陵地带，且主要生长在向阳的路旁、河边、荒地、林缘和灌丛等地。2个山区的金灯藤寄主植物共50科98属110种4变种，其中，乔木种类有22种2变种，灌木种类有25种1变种，草本种类有51种1变种，藤本种类有12种。金灯藤在大别山区的枫杨（Pterocarya stenoptera C. DC.）、银叶柳（Salix chienii Cheng）、苎麻〔Boehmeria nivea （Linn.） Gaudich.〕和盐肤木（Rhus chinensis Mill.）上的寄生率较高，分别为8.4％、6.8％、4.8％和4.8％；其在皖南山区的枫杨、盐肤木和黄荆（Vitex negundo Linn.）上的寄生率也较高，分别为9.7％、7.8％和3.9％。此外，金灯藤在大别山区和皖南山区的垂序商陆（Phytolacca americana Linn.）上的寄生率也较高，分别为2.8％和2.9％。研究结果显示：在大别山区和皖南山区，金灯藤寄主植物的多样性较高，且其对寄主植物的选择具有一定的偏向性，更偏向于寄生在草本和乔木种类上，尤其偏向于寄生在枫杨、盐肤木、银叶柳、苎麻、黄荆和垂序商陆等种类上。

Growth status， habitat， host plant species and so on of Cuscuta japonica Choisy in 4 lines and 13 plots in mountainous area of Dabie Mountains and in 1 line and 9 plots in mountainous area of South Anhui were investigated and analyzed by using a method combining line and plot. The results show that C. japonica grows well on all host plants in mountainous areas of Dabie Mountains and South Anhui with many parasitic branches， mostly grows on hilly land with altitude of 400-900 m， and mainly grows on sunny roadside， riverside， wasteland， forest edge， brush， etc. There are 110 species and 4 varieties of host plants of C. japonica in 98 genera belonging to 50 families in both mountainous areas， in which， there are 22 species and 2 varieties of arbor species， 25 species and 1 variety of shrub species， 51 species and 1 variety of herb species， and 12 species of liana species. Parasitic rates of C. japonica on Pterocarya stenoptera C. DC.， Salix chienii Cheng， Boehmeria nivea （Linn.） Gaudich.， and Rhus chinensis Mill. in mountainous area of Dabie Mountains are relatively high with values of 8.4％， 6.8％， 4.8％， and 4.8％， respectively， and those on P. stenoptera， R. chinensis， and Vitex negundo Linn. in mountainous area of South Anhui are also relatively high with values of 9.7％， 7.8％， and 3.9％， respectively. In addition， parasitic rates of C. japonica on Phytolacca americana Linn. in mountainous areas of Dabie Mountains and South Anhui are relatively high with values of 2.8％ and 2.9％， respectively. It is suggested that in mountainous areas of Dabie Mountains and South Anhui， the diversity of host plants of C. japonica is relatively high， and it has a certain bias to selection of host plants， more parasitize on herb and arbor species， especially parasitize on P. stenoptera， R. chinensis， S. chienii， B. nivea， V. negundo， and P. americana， etc.