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在杭州东郊于秋冬季节对菜蚜在青莱、甘蓝植株内不同叶位上的分布进行了系统调查。结果表明，桃蚜和萝卜蚜两种菜蚜，主要在嫩叶和老叶的背面取食，成叶背面也有一定数量，但萝卜蚜在成叶上的发生比率较桃蚜明显要高。混合种群在各类叶上的发生比率则依作物种类和生长期、两种蚜虫的发生比率及季节不同而变化。
In the eastern suburbs of Hangzhou in autumn and winter, the distributions of the vegetable aphids on different leaf positions in Qinglai and cabbage plants were systematically investigated. The results showed that the two aphids, Myzus persicae and Aphis gossypii, mainly fed on the back of young leaves and old leaves, and had a certain amount on the back of the leaves. However, the occurrence rate of turnip aphids in the leaves was significantly higher than that of the peach aphids. The occurrence rate of mixed population in all kinds of leaves varies with crop species and growth period, the occurrence rate of two kinds of aphids, and the season.