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在调查核盘菌和三叶草核盘菌发生为害的基础上，以核盘菌菌株Ｒａｐ－１和三叶草核盘菌菌株ＣＭＶ－２为代表，比较了温度及降雨等因子对菌丝生长及菌核萌发的影响。在１５～２８℃下Ｒａｐ－１菌丝生长较ＣＭＶ－２快，但在８℃下则相反；Ｒａｐ－１菌核在自然条件下萌发期间的温度较ＣＭＶ－２菌核萌发时温度高，两者菌核萌发呈现出明显的先后秩序。春季降雨的波动导致２种核盘菌的菌核萌发出现波动。离体致病性测定结果表明，核盘菌的致病性明显强于三叶草核盘菌。
On the basis of investigating the damage of Sclerotinia sclerotiorum and Sclerotinia sclerotiorum, the strains Sclerotinia sclerotiorum Rap-1 and Sclerotium milleiflora CMV-2 were used as the representative to compare the effects of temperature and rainfall on mycelial growth and sclerotia Effects of germination. The Rap-1 mycelial growth was faster at 15-28 ℃ than at CMV-2 but opposite at 8 ℃. The temperature during the germination of Rap-1 sclerotia was higher than that of CMV-2 during germination, Both sclerotia germination showed obvious order. Fluctuations in spring rains led to fluctuations in the germination of the two sclerotinia sclerotia. The results of in vitro pathogenicity test showed that the pathogenicity of S. sclerotiorum was significantly stronger than that of S. clover.