草坪草根腐病病原菌研究初报

A Primary Study on Pathogen of Turfgrass Root Rot Disease

通过对保定市冷季型草坪草根腐病发生情况调查 ,及对病原菌进行分离鉴定 ,共计分出致病病原菌 9种 ,分属 6个不同的属 ;初步明确保定市草坪根腐病的主要病原菌为镰刀菌、腐霉菌及离孺孢菌 ,分离频率分别为 61 5% ,19 2 % ,11 5% ;德氏霉菌、立枯丝核菌、交链孢菌也可引起草坪草根腐病 ,分离频率分别占 7 7% ,3 8% ,7 7%。

Investigation and pathogen identification of cool season turfgrass root rot diseasses were carried out in Baoding city in 1999.Nine pathogens belong to 6 different families.were identified.The result indicated that the main pathogens that caused lawn root rot disease in Baoding city were Fusarium Link,Pythium apganidermatum Fitzp,and Bipolaris Sorokiniana Shoem.The isolation frequency of them were 61.5%、19.2% and 11.5%,respectively.Drechsler sp.,Rhizoctonia Solani,and Alternaria tenuis Nees could also cause lawn root rot disease and their isolate frequency are 7.7%、3.8% and 7.7% respectively.