关键词: 美洲斑潜蝇, 高原夏菜, 选择性

Abstract: Five point methods were used to investigate the number of feeding tunnels，rate of harmed leaves and insect index of Liriomyza sativae Blanchard damaging 29 varieties of plateau summer vegetables．The results indicated that there were significant differences in Liriomyza sativae Blanchard selectivity to their varieties．The most favourite vegetables of Liriomyza sativae Blanchard were Trsum satrcum and Pisum sativum，the next favorite were Beassica pekinensis and Brassica oleracea．Except few varieties，Liriomyza sativae Blanchard selectivity to Trsum satrcum was stronger than to Pisum sativum，and its selectivity to Beassica pekinensis was stronger than to Brassica oleracea．According to the number of feeding tunnels，rate of harmed leaves and insect index of Liriomyza sativae Blanchard，the varieties of plateau summer vegetables were divided into the most favorite，the next favorite and the least favorite 3 types.