火炬松三种病害及发病机制初析

A Preliminary Analysis on Three Diseases ofPinus taeda and Their Machanisms

历经１９９５～１９９６年，对龙岩市引种来自美国的火炬松人工林４６６６．７ｈｍ２，进行了定点抽样调查和观测，采集标本及实验室内分离培养和鉴定，其中松针褐斑病（Ｌｅｃａｎｏｓｔｉｃｔａａｃｉｃｏｌａ）、松枯梢病（Ｓｐｈａｅｒｏｐｓｉｓｓａｐｉｎｅａ）、松赤枯病（Ｐｅｓｔａｌａｔｉｏｐｓｉｓｆｕ－ｎｅｒｅａ）为害面积大且严重，局部林分已出现成片枯死，是生产上急待解决的问题．

In recent years, international bank has provided the loans for Fujian province to plant, Pinus taeda, introduced from USA on a large scale, and for example, Longyan city has planted 4666.7hm2 Pinus taeda forest at present. After investigating on the spots in 19951996, we found three diseases: Sphaeropsis sapinea, Lecanosticta acicola, and Pestalotiopsis funerea damaging the Pinus's growth seriously. We identified the pathogenic and analyzed the factors on the diseases.