油菜蚜虫发生状况危害特征危害油菜的蚜虫主要有萝卜蚜、桃蚜和甘蓝蚜三种。这三种蚜虫都以成、若蚜密集在油菜叶背、茎枝和花轴上刺吸汁液,破坏叶肉和叶绿素,苗期叶片受害卷曲、发黄; Rape aphids Occurrence of hazardous characteristics Aphids endanger rape are radish aphid, Myzus persicae and cabbage aphid three. The three kinds of aphids are made into, if the aphids dense in the rape leaves back, stems and flowers axis sucking juice, damage to leaf and chlorophyll, seedling leaves crimp, yellow;