马尾松褐斑病调查研究初报

A Preliminary Report on the Investigation of Lecanosticta acicola of Pinus massoniana

松针褐斑病是马尾松的一种新的病害。调查发现在发病严重的湿地松林下及林缘的马尾松幼树已普遍感染松针褐斑病，发病率达６７．１％，个别发病严重的植株已濒临死亡。而在马尾松纯林调查中未发现马尾松褐斑病。马尾松褐斑病发生规律是春季为发病盛期，秋季为新叶发病期；病菌潜育期比湿地松上长一个月以上，病菌子实体产生的数量也比湿地松上产生的数量少的多。可见，马尾松是抗褐斑病较强的树种。

Lecanosticta acicola is a new disease of Pinus massoniana. Spring is the flourishing period of thedisease development and autumn is the disease development period for new needles. The investigation showsthat P. massoniana is more resistant to the disease than P. elliottii.