松针褐斑病初步研究

Preliminary Study on Brown Spot of Pine Needles

松针褐斑病的病原菌为Lecunostictaacicola,在病叶上或落叶上的病菌子实体和病组织中的菌丝体是初侵染源。任杂期主要在5月上旬至6月中旬。病原菌通过雨水的溅散以及风力而传播。在发病初期采用百菌清可湿性粉剂和托布津农药喷液及人工摘除病叶进行防治，均能收到一定效果。

The Pathogenetic fungi of pine nedles' brown spot is Lecanosticta acicola. Mycelial filaments of diseed tissue and fungi body in disend needle or fallen needles are initial source of infection. From May to mid-June ls the main infection Period. The source of infection is disseminated by rain drop and wind. Contro1 by chtorothalonil and thiophanate spray in initial occurrence or picking disared needles has good effect.