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油菜病毒病是上海郊区油菜三大病害之一。六十年代后,由于推广了抗病的甘蓝型油菜品种,并逐步淘汰白菜型感病品种,病毒病危害一度很轻。自七十年代中期开始,病毒病又逐年加重,以至1979、1980两年病毒病大发生。1980年调查,病毒病的平均发病率为50.3％,病情指数为31.85,个别田块的发病率竟高达100％,从而严重地影响了结荚和结实,成为油菜持续高产稳产的主要障碍。目前,有关油菜病毒病研究,国外的报导甚少,国内虽有报导,但大多限于白菜型油
Rape virus disease is one of the three major rape diseases in Shanghai suburbs. After the 1960s, the viral disease was once very light due to the promotion of disease-resistant varieties of Brassica napus and the phasing out of cabbage-susceptible varieties. Since the mid-1970s, viral diseases have been increasing year by year, even in 1979 and 1980. 1980 survey, the average incidence of viral diseases was 50.3%, the disease index was 31.85, the incidence of individual fields as high as 100%, thus seriously affecting the pod and fruiting, as a major obstacle to sustained and high yield of rape. At present, the rape virus disease research, very few reports of foreign countries, although there are reports, but mostly limited to cabbage-type oil