小白菜花叶病传毒介体蚜虫(Myzus persicoe和Rhopolosiphum pseudobrassicos)的若虫和无翅成虫在田间为聚集型分布,分布的基本成分为个体群,且随着群体密度的增加,拥挤度越来越高。有翅成虫在田间的分布为随机分布。这种分布类型与花叶病病株的田间分布类型一致,表明有翅成虫为病害传播的主要媒介。 The nymphal and wingless adults of the aphids (Myzus persicoe and Rhopolosiphum pseudobrassicos) of Brassica campestris were clustered in the field with the basic components of the distribution as individual groups, and as the population density increased, the degree of crowding increased The higher. The distribution of winged adults in the field is randomly distributed. This type of distribution is consistent with the field distribution pattern of the mosaic strains, indicating that winged adults are the major vectors for disease transmission.