广西八角炭疽病年发病节律观测与防治适期分析  

Preliminary Study of the Annual Dynamic of Colletotrichum coccdes and Control Period in Guangxi

作　　者：蒋晓萍 莫小刚 周婵 阙衍文 黄乃秀[2] Jiang Xiaoping1, Mo Xiaogang1 , Zhou Chan1 , Que Yanwen1 , Huang Naixiu2(1 Guangxi Liuwan State- owned Forest Fatal, Yulin 537001, China; 2. Guangxi Zhuang Autonomous Region Forestry Research Institute, Nanning 530002,Chin)

机构地区：[1]广西国有六万林场,广西玉林5370001 [2]广西壮族自治区林业科学研究院,广西南宁530002

出　　处：《中国野生植物资源》2017年第6期68-70,79,共4页Chinese Wild Plant Resources

基　　金：基金项目:八角炭疽病防控技术研究与示范区(桂林科字[2013]15号)

摘　　要：八角炭疽病[Colletotrichum coccdes(Wall.)Hughes]近年来在广西频繁发生和流行。为了解和掌握该病的周年发生动态,探索其年消长变化规律,给制定防治时间提供参考,于病害严重的八角林地内对可反映病害发生状况的因子采用定点定株定枝定时进行观测分析。重复观测两周年。研究结果表明:在广西六万林场八角炭疽病发生初始期为5月8日左右,高发期为7月至10月份,消退期为11月份,以7、8月份的发病率为最高,两月的发病率合计占全年的75%以上。一年内病害的发生发展有一定的规律性,呈中间高平,两头低的"几"字型。建议对该病的预防时间为发生年的3月,防治期为6月上旬。In recent years,the occurrence and prevalence of Colletotrichum coccdes become more and more common. To find out the annual dynamic of the disease and probe the relationship between the disease and season,ecological factors in the selected plots were timed collected,and had continued observed for two years. The results showed that： the symptoms of the disease appeared on around May 8,the peak was in July to October,and started to subside in November. In July and August the total incidence rate of more than 75%. Since the peak of the disease is in the summer,March and June is the best time to start prevention in advice.

关 键 词：八角炭疽病 年发生节律 防治适期 

分 类 号：S431.16[农业科学—农业昆虫与害虫防治]