经１９９５～１９９７年田间调查研究明确，油菜菌核病茎秆发病在终花后２０～２５ｄ达到发病高峰；油菜籽产量损失与发病株率和病情指数密切相关。该病发生程度与每年２月份平均温度、３月份的相对湿度、３月份的累计雨日数呈极显著正相关，病害的预测式为ｙ＝１６９５８６４＋１０８８０２ｘ１－２０２１５ｘ６－２２３１３ｘ８，验证符合率达到９５％以上 The field investigation from 1995 to 1997 confirmed that the incidence of sclerotia sclerotiorum culms 20 to 25d after the final peak incidence peak; rapeseed yield and disease incidence rate and disease index are closely related. The incidence of the disease was significantly and positively correlated with the annual average temperature in February, the relative humidity in March and the cumulative number of rainy days in March. The prediction formula of the disease was y = 169.55864 + 10.8802x1-20215x6-22313x8, Verify compliance rate of 95% or more