南京林业大学学报(自然科学版) ›› 1980, Vol. 23 ›› Issue (02): 31-38.doi: 10.3969/j.jssn.1000-2006.1980.02.004

• 研究论文 • 上一篇    下一篇

杉木炭疽病的研究——Ⅰ.症状和病原的探讨

  

  1. 林业部南方森林植物检疫所;南京林产工业学院;江西省进贤县北岭林场
  • 出版日期:1980-06-18 发布日期:1980-04-18

STUDIES ON THE ANTHRACNOSE OF CHINESE FIR I. Symptoms and the Causal Agent

South-China Forest-plant Quarantine Service, MFPRCNanjing Technological Colloge of Forest ProductsBeting Forestry Station, Jinxian County, Jiangxi Province   

  1. Written by Li Chuandao
  • Online:1980-06-18 Published:1980-04-18

摘要: <正>杉木炭疽病在我国南方各省丘陵地区普遍发生。病害主要在春季为害幼树的先年秋梢,使梢头针叶枯死或梢头枯死。感病较轻的或在较老枝条上,只引起针叶先端枯死。从感病针叶和嫩茎上经常分离到一种毛盘孢属(Colletotrichum)的炭疽菌,经室内和林间接种试验和再分离,证明它是杉木炭疽病的病原物。在因炭疽病而枯死的针叶上,常常出现一种多毛孢菌(Pestalotia)的子实体,试验证明它们多半是次生的或腐生的真菌。因不正常的生理原因引起的黄化针叶更容易感病。 关于杉木的病害,以前很少报道。近十多年来,我国南方各省大力营造杉木用材林,在低山丘陵地区也建立了许多以杉木林为主的用材林基地。在这些杉木幼林中,普遍出现针叶及梢头黄化、枯死的现象,对幼树的生长造成极大影响。从1974年起,我们在江西对这个问题开始进行研究。当时因为对这种病害缺乏认识,总的称它为杉木叶枯病。经过两年的探索以后,弄清了杉木叶枯病实际上包括3种主要的病害,即杉木生理性黄化病、杉木细菌性叶枯病和杉木炭疽病。前两种病害的情况已有报道。本文将叙述我们对杉木炭疽病的研究结果。试验工作主要是在江西省进贤县北岭林场进行的,同时也到江西北部地区10余个县市的近20个场圃作了调查研究。

Abstract: The anthracnose of the Chinese fir (Cunninghamia lanceolata) was found, for the first time in Jiangxi Province of China in 1973, and has been prevelent in the hilly country regions, causing severe damages to young plantations. The disease breaks out in spring and attacks the needles nearby the top of the shoots grown up in the last year. Subsequently, the causal organism invades into the shoots through infected needles and may cause the death of the shoots. On older branches, the disease only causes necrosis of the upper part of the needles. A species of Colletotrichum has been isolated from the infected needles and shoots. Inoculation and reisolation experiments showed that this fungus was the pathogen of the Chinese fir anthracnose. There often appeared on the needles killed by the anthracnose some fruiting bodies of a species of Pestalotia, which by experiments proves to be a secondary colonizor or a saprophyte. Needles with chlorosis due to abnormal physiological factors subject to infection of this disease more readily.