【摘要】 1997年和1998年的4~6月间，从浙江东北部沿海的11个县、市、区的冷季型草坪病苗上，共分离鉴定Pythiumirregulare,P.mamillatum,P.aphanidermatum,P.ultimum,P.deliense和P．graminicola等6种腐霉菌。接种试验表明，这6种腐霉菌都能引起高羊茅猎狗5号幼苗的猝倒病，并导致幼苗生长不良，其中P．deliense对猎狗6号幼苗的致病性最强。更多还原

【Abstract】 Six species of Pythium were isolated from cool-season turfgrasses seedlings in 11 cities, counties and districts,Zhejiang province,from April to June, in 1997 and 1998. They were identified to be P.irregulare, P. mamillatum, P. aphanidermatum, P. ultimum, P. deliense and P. graminicola.In inoculation tests, all six species isolated from cool-sesson grasses seedlings were pathogenic totheir host Fescue cv. Hound 5. and caused its seedlings damping off and growing bad. P. deliense wasthe most virulent pathogon to Hound 5.更多还原