莲缢管蚜又称蚜虫、腻虫等,喜阴湿天气,从5月上旬到10月都可在莲藕植株上为害,以6月危害最严重。1.危害特点成虫、若虫常成群密集于嫩绿的幼叶、叶芽、花蕾及柄上刺吸汁液,被害叶片发生黄白斑痕,生长不良,重者叶片卷曲皱缩,叶片枯黄,花蕾凋萎,造成莲藕减产。 Aphis gossypii, also known as aphids, greyworms, hi hi wet weather, from early May to October can be on the lotus root plant damage, the most serious in June. 1. Harmful characteristics Adult, nymphs often crowds of young green leaves, leaf buds, buds and stab sucking juice, the victim leaves yellowish-white marks, poor growth, severe curly folds of leaves, yellow leaves, buds withered, Cause lotus root cut.