香榧细菌性褐腐病的症状及防治试验  

Symptom and control of bacterial brown rot in Torreya grandis Fort

作　　者：陈李红 金国龙 孙蔡江 郎学军[3] 

机构地区：[1]浙江省绍兴市林业局,浙江绍兴312000 [2]浙江省诸暨市森林病虫防治检疫站,浙江诸暨311800 [3]建德市林业局,浙江建德311600

出　　处：《江苏林业科技》2006年第3期18-19,共2页Journal of Jiangsu Forestry Science & Technology

摘　　要：由胡萝卜软腐欧氏菌Erwinia carotovora(Jones)Bergeey等引起的香榧细菌性褐腐病是危害香榧果实的一种重要病害,病斑呈褐色,常引起香榧落果而减产。4月底5月初开始发病,5月中下旬为发病高峰。经雨水传播,从皮孔或伤口侵入,连续的阴雨天易发病,用5%菌毒清800倍液喷雾防治,效果达90.4%,50%退菌特400倍液喷雾防治,效果达76.9%。Bacterial brown rot caused by Erwinia carotovora （Jones）Bergey et al is an important disease in Torreya grandis Fort. The damaged young fruits show brown rot symptom,often resulting in fruit drop and yield reduction. The disease occurs from late April to early May,serious in mid and later May. The pathogen could be transmitted by rain and wind,infecting healthy fruits via wounds and lenticels. The disease is epidemic in rain season. Such chemicals as Junduqing and Tuzet spray can acquire controlling effects of 90.4% and 76. 9% respectively.

关 键 词：香榧 细菌性褐腐病 症状 防治 

分 类 号：S791.53[农业科学—林木遗传育种] S763.715.3[农业科学—林学]