【摘要】 对昌黎、隆化、卢龙、抚宁、遵化、青龙等地山楂枝干上发生的可疑病害,通过苛赫氏证病律,取病原物制片,查阅有关资料,鉴定是由 Cytospora 引起的山楂树腐烂病和由 Botryosphaeria 引起的山楂干腐病,并初步采取综合防治措施,效果较好。更多还原

【Abstract】 The suapicious diseases expressed on the trunks of crabapple in Chang- li,Longhua,Funing,Zunhua and Qinglong county were identified by using the Koch’s Law,the sections of pathogen and related referenees.Two kinds of diseases were found.One of diseases was canker of crabappte caused by Cytospora sp.,another was dry rot of crabapple caused by Botr yo sphaeria sp. The controlling results were satisfactory after the preliminary integrated management was carried out.更多还原