贵州原生态石栽铁皮石斛软腐病发生情况调查  

Investigation of Damping-off Disease Incidence of Original Ecological Stone Planted Dendrobium officinale in Guizhou

作　　者：康专苗 王晓敏[1] 周玉飞[1] 彭竹晶 罗晓青[1] KANG Zhuan-miao WANG Xiao-min ZHOU Yu-fei LUO Xiao-qing et al(Guizhou Institute of Subtropical Crops, Xingyi, Guizhou 56240)

机构地区：[1]贵州省亚热带作物研究所,贵州兴义562400

出　　处：《安徽农业科学》2017年第4期159-160,204,共3页Journal of Anhui Agricultural Sciences

基　　金：中国热带农业科学院环境与植物保护研究所所地合作项目(2016hzs1J059);贵州省联合基金(黔科合LH字〔2014〕7700号)

摘　　要：[目的]了解野外环境中不同光照条件(不同郁闭度)软腐病对石栽铁皮石斛的影响。[方法]对贵州兴义原生态石栽铁皮石斛软腐病发生情况进行调查。[结果]连续降雨条件下,铁皮石斛软腐病的发生与郁闭度呈极显著的正相关关系,最适宜的郁闭度为0.2~0.4,当郁闭度超过0.6时,母株和新芽发病较严重,而且新芽达到4级时发病程度比母株高。[结论]调查结果为原生态石栽种植铁皮石斛提供了理论依据。[ Objective ] The aim was to understand effects of damping-off disease under different light conditions （ canopy density） on Dendrobium officinale planted on the stone. [ Method] We investigated and analyzed damping-off disease incidence of Dendrobium officinale which planted on the stone in Xingyi of Guizhou. [ Result] Under continuous rainfall ,damping-off disease occurrence and canopy density were significantly positive correlation relationship;the most suitable canopy density was 0.2 -0.4, and when the canopy density was greater than 0.6, the incidence of maternal and sprouts was serious and shoots reached 4 incidence ratio was high. [ Conclusion ] The results provide theoretical basis for planting Dendrobium officinale on the stone in original ecology.

关 键 词：铁皮石斛 软腐病 原生态 石栽 

分 类 号：S435.672[农业科学—农业昆虫与害虫防治]