随着小麦生长进入抽穗期,多种重要病虫害也进入了盛发期。其中尤以病害种类多,危害最为严重。依据发生部位,可以分为穗部病害、叶面病害和基部病害。在小麦生长后期,防治病虫害最有效的方法是采用化学农药进行应急防治。在开展病虫害化学防治时,首先要选择高效、低毒、低残留、选择性强 As wheat grows into the heading stage, a variety of important pests and diseases have also entered the flourishing period. Among them, there are many kinds of diseases and the harms are the most serious. Depending on the site of occurrence, panicle diseases, foliar diseases and basal diseases may be classified. In the late stages of wheat growth, the most effective way to control pests and diseases is to use chemical pesticides for emergency prevention and treatment. In carrying out chemical pest management, we must first select efficient, low toxicity, low residue, selective