沈阳地区京桃树种主要病害调查研究

Surveys on Major Diseases of Prunus davidiana in Shenyang Areas

京桃是沈阳城市景观绿化中大量栽植的优良观赏树种。通过采用随机抽取样地,对沈阳市区内的病害全面普查,调查结果显示:在京桃树木上共发现9种病害,可分为真菌类、细菌类、缺素类3大类,真菌类病害是京桃的主要病原,京桃每种病害的症状和虫害的危害状都有各自典型的特征,因此易于鉴定和区分9种病害。通过严格培育健康苗,选择土壤条件好的地段栽培,合理控制水分,清除病树并处理,药剂使用等,大多数京桃病害的发生是可以控制的。

Prunus davidiana is a superior ornamental tree species for landscape and afforestation in Shenyang. Surveys on diseases of Prunus davidiana in Shenyang areas were conducted thoroughly by means of sampling plots randomly. The results showed that： 9 kinds of diseases were found for Prunus davidiana which could be c -lassified into such 3 categories as fungus, bacterium and element - deficiency, and fungus was the major pathogem. Characteristics of symptoms of diseases and endangered status of pests for Prunus davidiana were typical, so 9 kinds of diseases were to be identified and made out easily. Most diseases could be controlled by cultivation of sound seedlings, selection of planting sites with fertile soil conditions, rational adjustment of water, remeve and dispose of invalid trees and use of chemicals.