尖孢镰刀菌对樟树的危害诊断及综合救治措施研究——以黄石市杭州东路为例

Study on Diagnosis and Integrated Control Measures of Fusarium oxysporum Damage to Camphor Trees—A Case Study of Hangzhou East Road in Huangshi City

摘要: 樟树(Camphora officinarum Nees ex Wall)作为我国南方地区重要的乡土树种和城市绿化骨干树种，其健康生长对生态安全和城市景观至关重要。近年来，由尖孢镰刀菌(Fusarium oxysporum)引起的樟树枯萎病呈现高发态势，因其隐蔽性强、扩散迅速、防治困难，已成为威胁樟树生存的最严重病害之一。本文以湖北省黄石市杭州东路香樟为研究对象，通过系统调查和实验分析，深入探讨了尖孢镰刀菌的生物学特性、致病机理及其对樟树的危害症状与诊断方法。在此基础上，结合杭州东路香樟的生长现状和病害特点，提出了一套集“精准诊断、应急处理、生态调控、长效管理”于一体的综合救治体系。研究结果表明，尖孢镰刀菌在杭州东路香樟中的感染率高达14.1%，且病情呈加速蔓延趋势。通过实施以土壤改良为核心，结合化学防治、生物防治和栽培管理的综合措施，可有效控制病害蔓延，恢复树木健康。本研究旨在为城市园林绿化养护部门提供科学依据和技术支持，推动樟树枯萎病的有效防控和可持续管理。

Abstract: Camphor tree (Camphora officinarum Nees ex Wall) is an important native species and a backbone tree for urban greening in southern China. Its healthy growth is crucial for ecological security and urban landscapes. In recent years, camphor tree wilt disease caused by Fusarium oxysporum has shown a high incidence trend. Due to its strong concealment, rapid spread, and difficulty in control, it has become one of the most serious diseases threatening the survival of camphor trees. This paper takes the camphor trees on Hangzhou East Road in Huangshi City, Hubei Province as the research object. Through systematic investigation and experimental analysis, it deeply explores the biological characteristics and pathogenic mechanisms of Fusarium oxysporum, as well as the damage symptoms and diagnostic methods for camphor trees. Based on this, and considering the growth status and disease characteristics of the camphor trees on Hangzhou East Road, a comprehensive rescue system integrating “accurate diagnosis, emergency treatment, ecological regulation, and long-term management” is proposed. The research results indicate that the infection rate of Fusarium oxysporum in the camphor trees on Hangzhou East Road is as high as 14.1%, and the disease is showing an accelerating spread trend. By implementing comprehensive measures focused on soil improvement, combined with chemical control, biological control, and cultivation management, the spread of the disease can be effectively controlled, and tree health can be restored. This study aims to provide scientific basis and technical support for urban landscaping maintenance departments, promoting effective prevention and control and sustainable management of camphor tree wilt disease.