蚜虫自幼苗至花期终了，时有发生，种类很多。危害菊花的主要是茶褐色、有光泽、体型很小的长管蚜虫和青绿色蚜虫等。长管蚜虫多在芽心嫩尖为害。被害菊株发黄变形，最可恶的是危害花芽，使花容减色憔悴。青绿色蚜虫潜藏下部叶背，夏秋季为害最多，致下部叶片枯黄凋零。各类蚜 Aphids from the seedlings to the flowering end, sometimes, many kinds. Chrysanthemum damage is mainly brown, shiny, small tube aphids and green aphids and so on. Aphids long tube bud in the heart of the tender harm. Chrysanthemum damage yellow strain, the most hateful is to endanger the flower buds, so that flower color reduction gaunt haggard. Green aphids lurk in the lower part of the back, most damaging summer and autumn, causing the lower part of the withered leaf withered. All kinds of aphids