油菜霜霉病和白锈病是油菜常见的病害。从苗期至开花结荚期均为害,使叶片提早枯死、脱落、影响了油菜生长发育。二病常并发,为害花轴,病部肿大,畸形、弯曲呈“龙头状”;后期在病部长出白色霜霉状物;长出白色“泡斑”为白锈病。轻者结实 Rape downy mildew and white rust are common diseases of rape. From the seedling stage to the flowering pod stage are harmful, so that the leaves died early, fall off, affecting rape growth and development. Second disease often complicated by damage to the axis of the flower, the Ministry of disease swollen, deformity, bending was “faucet-like”; late in the disease Minister of white downy mildew; grow white “bubble spot” is white rust. Light strong