近年来,三麦穗期蚜虫在晚麦上为害越来越重。麦子受害后,灌浆不足,千粒重下降,大大影响三麦的产量。1978年我们特作了穗期蚜虫为害情况的调查和药剂防治试验,为今后大面积治好穗蚜控制为害提供依据。 In recent years, the three wheat aphids in late wheat damage more and more serious. After the wheat was damaged, the grouting was insufficient and the grain weight decreased, which greatly affected the yield of Sanmai. In 1978, we made a special survey of aphid infestation at the heading stage and pesticide control experiments, which provided the basis for the large-scale control of the spider aphid in the future.