小陇山林区林木病原真菌种类及其分布规律调查

Distributional patterns of forest pathogens fungi in Xiaolongshan forest area

通过现场采样调查,并结合形态学鉴定,对小陇山林区林木病原菌的种类和病原分布情况进行了研究.结果表明:该林区共有病原菌154种,隶属71属、41科.其中,葡萄座腔菌科有21种,占总物种数的13.6%;斑痣盘菌科18种,占总物种数的11.7%;球腔菌科和白粉菌科11种,占总物种数的7.1%.葡萄座腔菌科为该林区病原菌优势种类,在低中山和中山分布较多,为害较重,而在低山和中高山分布较少,为害较轻.病害主要侵染蔷薇科、杨柳科、壳斗科、蝶形花科、忍冬科、松科,主要引起叶部病害.

Investigation was carried out on species and distribution law of pathogens fungi in Xiaolongshan forest area.The results showed that there are 154 species of forest pathogen fungi collected in this forest area,belong to 71 genera,41 families.Among theses pathogen fungi,21 species belong to Botryosphaeriaceae,which accounting for 13.6% of total species,and are the dominant pathogen fungi species in this forest area,most of them distribute in low-middle and middle mountains.Rosaceae,Salicaceae,Aceraceae,Fabaceae,Caprifoliaceae,Pinaceae were mainly infested by diesase and caused leaf disease.