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在中国冬油菜区10省12县(市)13个地点,经过3—5年调查与试验得出如下主要结果: 1.秋季冬油菜苗期油菜田内的迁飞蚜虫主要是油菜蚜虫,在三种油菜蚜虫中,以萝卜蚜数量最多,分布最广,在冬油菜区都是优势种;桃蚜分布也很广泛,但数量比萝卜蚜要少很多,他主要发生在北方冬油菜区,是该区的优势种之一,其次是云南高原,其他产区较少;甘兰蚜主要发生在云南高原区,是该区优势种之一,其他产区极少或没有发现。除油菜蚜虫之外,其他蚜虫在长江流域油菜产区和北方冬油菜产区也有相当大比重,特别是长江流域。
In the winter rapeseed area of China 10 provinces 12 counties (cities) 13 locations, after 3-5 years of investigation and testing to draw the following main results: 1. Autumn winter rapeseed rapeseed migration aphids mainly rape aphids, in the three Among the rape aphids, the largest number and distribution of radish aphids are the dominant species in the winter rapeseed area. Myzus persicae is also widely distributed, but its population is much less than that of the radish aphid. It mainly occurs in the northern winter rapeseed area and is One of the dominant species in this area, followed by the Yunnan plateau, the other producing areas less; cabbage aphid mainly occurs in the Yunnan Plateau, is one of the dominant species in the area, with little or no other producing areas found. In addition to rape aphids, other aphids in the Yangtze River rape and northern winter rapeseed areas also have a large proportion, especially the Yangtze River.