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马尾松赤枯病(Pestalotia funerea Desm.)是马尾松(Pinus massoiana Lamb.)幼林叶部的主要病害。初步了解在四川、贵州、广东、江苏等省都有分布。四川的万县、涪陵、达县、宜宾、绵阳、内江、江津、南充、重庆等地(市)普遍发生。有的危害成灾,病株率高达100％,病株感病指数30.5-64.2％;病叶率39.5-99.7％,病叶感病指数28.6-76.4％。受害针叶半截以致全针枯死,林分一片枯红,状似火烧,影响林木生长成林。1974-1977年在四川忠县国营石子林场的马尾松人工幼林进行了马尾松赤枯病的危害、病原、症状和流行规律的研究,1978年在四川省永川森林病虫防治试验站作接种试验。现将结果,报道于后。
Pestalotia funerea Desm. Is the main disease in young leaves of Pinus massoiana Lamb. Preliminary understanding of the distribution in Sichuan, Guizhou, Guangdong, Jiangsu and other provinces. Sichuan Wanxian, Fuling, Daxian, Yibin, Mianyang, Neijiang, Jiangjin, Nanchong, Chongqing and other places (cities) generally occur. Some of the hazards of disaster, the strain rate as high as 100%, disease susceptibility index 30.5-64.2%; diseased leaf rate 39.5-99.7%, diseased leaf susceptibility index 28.6-76.4%. Injured needle half so dead, the whole forest is a red, like burning, affecting forest growth into forests. In 1974-1977, the study was conducted on the damage, pathogen, symptom and epidemic regularity of Masson’s pine blight in the masson pine young plantations in the state-owned Danzi Forest Farm in Zhong County, Sichuan Province. In 1978, the inoculation test was conducted in Yongchuan Forest Pest Control Station in Sichuan Province . The results will be reported later.