油菜是我县主要经济作物,常年栽培9万亩以上。近年来,由于耕作制度的改变,氮肥施用量增加,油菜菌核病的为害日趋严重。据测定,受害油菜轻者千粒重轻0.3—0.5克,一般减产10——20％,重者减产50％左右。为研究油菜菌核病的防治方法和有效防治药剂,1984—1985年度,我们进行了油菜品种抗病性鉴定、土壤含水量大小与菌核病为害程度关系调查以及不同药剂防治菌核病效果的试验、示 Rape is my county’s main cash crop, perennial cultivation of 9 acres or more. In recent years, due to the change of farming system, the amount of nitrogen fertilizer increased, sclerotinia scabish growing worse. According to the determination, the victims of rapeseed light weight thousand grain 0.3-0.5 grams, the general reduction of 10 - 20%, weight reduction of about 50%. In order to study the prevention and cure of sclerotinia sclerotiorum and effective prevention and treatment of pesticides, we carried out the identification of disease resistance of rape cultivars from 1984 to 1985, the relationship between the soil water content and the degree of sclerotial damage, and the effects of different pesticides Test, show