油菜的主要病害是菌核病、霜霉病、白锈病和病毒病,主要害虫是蚜虫。菌核病俗称“白秆”、“烂秆”。发病率一般10%～30%,减产一至三成,重者五成以上。栽培技术上要深沟窄厢、清沟排渍,及时清除老黄叶。药剂防治。一般在油菜花期进行,发病株率在5%～10%时喷药。每隔7～10天喷一次,共喷1～3次喷药时,均匀喷在于全株各部位。重点喷布植株中下部茎叶。防治药剂有50%速克灵粉剂,40%灭病威 The main diseases of rape are sclerotinia, downy mildew, white rust and virus disease, and the major pests are aphids. Sclerotinia commonly known as “white stalk ”, “stalk ”. The incidence rate is generally 10% ~ 30%, cut one to three into a serious, heavy five or more. Cultivation technology to narrow the narrow car, clear ditch row of stains, timely removal of yellow leaves. Pharmacy control. Generally carried out in the rape blossoms, the incidence of plant spray rate of 5% to 10%. Spray every 7 to 10 days, a total of spray 1 to 3 times when sprayed evenly spray all parts of the plant. Spray the plants in the lower stems and leaves. Prevention and treatment of drugs have 50% of klinking powder, 40% of the disease Wei