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油菜病毒病在我国各地均有分布,为南方冬油菜产区的重要病害之一。在秋冬温暖、干燥的气候条件下,特别是城郊蔬菜较多的地区,发病更加严重,一般发病率为10—30%,严重者达70%以上,重病区流行年份减产2—3成以上,含油量降低1—5%左右,严重者甚至全田植株枯死,损失极大。该病主要通过萝卜蚜和桃蚜于秋冬季节(9—12月初)从十字花科蔬菜地大量向油菜地迁飞传毒致病。目前国内外尚无防治病毒病的有效措施,因而给生产带来较大损
Rape virus disease in all parts of China are distributed, as one of the important diseases in the southern winter rapeseed areas. In the warm and dry climate of autumn and winter, especially in the suburbs with more vegetables, the incidence is even more serious. The average incidence is 10-30% and severe cases are more than 70%. The prevalence of severe diseases is reduced by 2-3% Reduced oil content of about 1-5%, even the whole plant died in serious cases, great loss. The disease mainly by radish aphids and peach aphid in the fall and winter seasons (early September-December) from cruciferous vegetables to the rapeseed mass transfer poisoning pathogenic. At present, there are no effective measures to prevent and cure virus diseases at home and abroad, thus resulting in greater losses to production