秦岭落叶松林真菌病害区系

Fungus Disease Flora of Larch Plantation in the Qinling Mountains

对秦岭落叶松人工纯林真菌病害进行了系统调查，鉴定出病原真菌７６种，其中１新种（另文报道），１个寄主新记录，１０个陕西新记录种。病原以Ｐｈｙｌｏｓｔｉｃｔａ、Ｐｕｃｉｎｉａ、Ｃｏｌｅｏｓｐｏｒｉｕｍ、Ｍｅｌａｍｐｓｏｒａ属真菌为主；寄主以杨柳科、禾本科、松科等８科植物为主，并以叶部病害为多。林分不同层次（乔木、灌木、草本层）、不同海拔的落叶松林病害各有特点。草本层锈病居多；随海拔升高。

A systematic study on plant pathogenic fungi in larch plantation was carried out in the Qinling Mountains. The results were as follwos:76 species of plant pathogenic fungi were identified,including 1 new species (being reported in another paper),1 new record host plant and 10 new record species in Shannxi province.There are many plant pathogenic fung in the larch plantation including mainly Phyllosticta,Puccinia,Melampsora,Coleosporium etc.,8 main families of host plant,Populaceae,Gramineae,Pinaceae,etc.,are involved. These pathogens mainly infect the leaves of forest plants.The fungus diseases behave specific characters with various layers and different altitude of larch plantations