苹果绵蚜Eriosoma lanigerum Hausmanu为害苹果树的地上部及根部,使被害部渐成瘤状,阻止了水分、养分的输导和吸收,影响花芽分化,使产量降低,一般减产20—30％,为害严重的年份,减产可高达60—70％,影响幼树枝条发育,推迟结果,甚至引起死亡。 如何防冶苹果绵蚜,是当前昆明市苹果生产上急待解决的重要课题。我们采用40％氧化乐果乳油(北京农药二厂生产),进行田间药效试验,结果简报如下: Apple aphid Eriosoma lanigerum Hausmanu damage Apple tree shoots and roots, so that the victim into a tumor-like, to prevent the water and nutrients in the transmission and absorption, affecting flower bud differentiation, reduce production, the general reduction of 20-30%, damage In severe years, the cut can be as high as 60-70%, affecting the development of saplings, postponing the results and even causing death. How to prevent and cure apple aphid is an important issue to be solved urgently in apple production in Kunming. We use 40% Omethoate EC (Beijing Pesticide Factory production) for field efficacy trials, the results briefed as follows: