烟蚜是烟叶生产中重要害虫之一.据我们连续数年调查记载,烟蚜在烟田的自然发生规律:一般年份五月中、下旬有翅蚜由越冬寄主大量向烟田飞迁,进行繁殖,六月下旬至七月下旬为早烟田蚜量高峰期,七月下旬以后,早烟田蚜量趋于下降,大批烟蚜则转向更适合其 Myzus persicae is one of the most important pests in tobacco production.According to our continuous investigation for several years, the natural occurrence pattern of aphids in tobacco fields is as follows: In the middle of May, the winged aphids flew from the wintering host to the tobacco fields in mid- Breeding, from late June to late July as the peak of early aphid population. After late July, the amount of aphids in early tobacco fields tended to decline, and a large number of aphids turned to be more suitable