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莲缢管蚜是水生经济植物与核果类果树上的主要害虫,在江苏为全周期型。秋季,雌性蚜虫在冬寄主核果类果树上产卵。夏寄主有慈姑、莲藕、菱角、芡实、绿萍等水生经济植物。调查结果表明:北纬30°以南广大地区主要以胎生雌蚜过冬,营孤雌生殖,为不全周期型。莲缢管蚜全年可完成27—29代,无翅胎生雌蚜的寿命、产卵量与温湿度有关。23—27℃、相对湿度为81—92％时,有利于成蚜的生长和繁殖,每头成蚜平均产蚜67头,成蚜寿命9.7—10.4天。莲缢管蚜种群动态全年出现3个高峰,分别为4月下旬至5月初;6月下旬至7月上旬;8月下旬至9月中旬。主要天敌有:长突毛瓢虫、中华草蛉、食蚜肓蝽、黑带食蚜蝇等,对种群有一定的抑制作用。
Aphis gossypii is a major pest on aquatic economic plants and stone fruit trees in the whole cycle in Jiangsu. In the fall, female aphids lay eggs on the winter host drupe fruit tree. Summer host a Sagittarius, lotus root, water chestnut, Gorgon, Green Ping and other aquatic economic plants. The survey results show that in the vast area south of latitude 30 °, the female viviparous female mainly live in winter and parthenogenetic parthenogenesis is incomplete cycle type. Lotus aphid can be completed throughout the year 27-29 generation, wingless viviparous female aphid life, fecundity and temperature and humidity. 23-27 ℃, relative humidity of 81-92%, is conducive to the growth and reproduction of aphids, each aphid average yield of 67 aphids, adult aphids 9.7-10.4 days life expectancy. The population dynamics of Aphis gossypii (Lagerstroemia indica) population showed three peaks throughout the year, from late April to early May respectively; from late June to early July; from late August to mid-September. The main natural enemies are: long-headed ladybug, Chinese weed, Aphis gossypii stink bug, black-eyed hoverfly and so on, to a certain extent, inhibit the population.