杨树红心病危害的调查研究  

Surveys on red heart disease of poplars

作　　者：郑华英[1] 戴雨生[1] 张培[1] 郭同斌 梁波 

机构地区：[1]江苏省林业科学研究院,江苏南京211153 [2]徐州市林业指导站,江苏徐州221004

出　　处：《江苏林业科技》2006年第1期22-24,共3页Journal of Jiangsu Forestry Science & Technology

基　　金：江苏省科委1998年下达的应用基础研究课题内容之一

摘　　要：杨树红心病是分布广泛、危害严重的一种病害，几乎所有杨树品种都会遭侵染，成年树病株率达100％，变色比率15．65％-50．70％。从当年生扦插苗到成年树均能发生，红心病主要发生在主干的髓心和木质部。该病的严重程度与栽植的立地条件有关，在低洼湿地栽植的杨树其变色程度严重，且随树龄的增加而加剧，生长速度快的杨树，危害程度大。杨树品种不同，危害程度不同，品种之间存在着显著差异。Red heart wood of poplars distributes very widely and causes a serious damage. It can be found nearly in all breeds of poplars from young plants to old trees. Observation showed that the incidence of disease in adult trees was about 100% and the percentage of discoloration was 15.65%-50. 70%. The red heart disease occured mainly at pith and xylem. Severity of red heart wood of the tree was relevant to the soil conditions of cultivation. The trees which planted low-lying and wet land changed color seriously and the range of discoloration would aggravate with adding age. The more trees grew fast, the larger degree of harm was caused. The degree of damage of red heart wood was different on different breeds of poplars. There was a marked difference among breeds, which had given proofs for selection of disease-resistant breeds of poplars.

关 键 词：杨树 红心病 危害 调查 

分 类 号：S792.11[农业科学—林木遗传育种] S763.1[农业科学—林学]