江苏扬州地区蔬菜烟粉虱寄主调查及种群动态

2002—2003年对江苏扬州地区露地蔬菜上的烟粉虱寄主植物、危害，及主要蔬菜上的烟粉虱种群动态进行了调查。共查到烟粉虱寄主植物10科39种(变种)，主要分布在葫芦科、十字花科、豆科、茄科和菊科等蔬菜上，其中以黄瓜、豇豆、花菜和长茄发生较为严重；露地蔬菜上的烟粉虱发生在6月上旬至11月中旬，发生高峰期在8月下旬至9月上中旬；随着蔬菜的种类、季节和年份的不同，田间烟粉虱的发生为害也有所不同。

Investigation of the host plants and the population dynamics of Bemisia tabaci on the vegetable fields in Yangzhou area, Jiangsu

The damage of Bemisia tabaci (Gennadius) to the outdoor vegetables and population dynamics of B. tabaci on the main vegetable varieties were investigated from 2002 to 2003 in Yangzhou area. There were 39 species (varieties) of host plants of B.tabaci belonging to 10 families, in which Cucurbitaceae, Cruciferae, Laguminosae,Solamaceae and Compositae were the main families.B.tabaci did much more serious damage to the cucumber,cowpea,cauliflower and eggplant. It took place from the beginning of June to the middle of November and reached the peak from the last of August to the middle of September. The investigation results also showed that the occurrence and the range of damage of B.tabaci in the field changed with the different vegetable varieties, seasons and years.