海南岛假臭草入侵情况及丛枝病发病情况研究  

Invasion of Praxelis clematidea and Occurrence of Witch′s Broom in Hainan

作　　者：李光明[1,2] 袁坤[2] 邹智[2] 杨礼富[2] 陈秋波[2] 王真辉[2] 

机构地区：[1]海南大学环境与植物保护学院,海南儋州571737 [2]中国热带农业科学院橡胶研究所/农业部橡胶树生物学重点开放实验室,海南儋州571737

出　　处：《热带农业科学》2012年第5期66-70,共5页Chinese Journal of Tropical Agriculture

基　　金：国家自然科学基金项目(No.30960088);海南大学"211工程"建设项目资助

摘　　要：对海南岛18市县假臭草入侵情况进行普查,从中选取8个地区,对假臭草丛枝病的发病情况进行重点调查,结果表明:海南18市县均存在假臭草,8个地区均存在假臭草丛枝病,其发病率为0.37%～3.01%,发病指数为0.31～2.59。对健康株高与丛枝病株高进行差异性分析,结果表明:假臭草丛枝病可以显著抑制假臭草的生长。Prarelis clematidea, as one of serious invasion weeds, invades farmland, forest, not only causes bad effect on economy, also threatens diversity of Eco-environment in Hainan. Invasion of Praxelis clematidea were surveyed in all eighteen districts of Hainan and witch＇s broom of Praxelis clematidea under different environment were also investigated in eight districts selected from the eighteen districts above. The results showed that Praxelis clematidea has already been spread in all eighteen districts, and witch＇s broom of Praxelis clernatidea has been found in eight districts among them. The incidence rates of witch＇s broom are in range of 0.37% to 3.01% and the incidence indexes of witch＇s broom are in range of 0.31 to 2.59, respectively. It suggests that witch＇s broom significantly depress growth of Praxelis clematidea through differentiated analysis between the height of plant with witch＇s broom and the health＇s.

关 键 词：假臭草 从枝病 发病指数 发病率 

分 类 号：S451[农业科学—植物保护]