中国玉米的三大病害为玉米瘤黑粉病、玉米丝黑穗病和玉米锈病,国内外育种专家和植保专家正强强联合,着重在重病基地开展了抗病育种研究,培育抗以上三病的丰产玉米新品种,并且已取得了丰硕成果。科学家已取得了共识,培育抗以上三种病菌的丰产抗病良种乃是防治玉米三大病害最经济有效的措施。玉米二大害虫为玉米螟和暗黑金龟子。特别是玉米螟,如是玉米植株早期钻蛀为害,常造成叶面排孔和导致成株期植株倒伏及营养输送受阻。玉米暗黑金龟子常群集为害,会咬食玉米茎秆 The three maize diseases in China are maize smut, maize smut and corn rust. Domestic and foreign breeders and plant protection specialists are allied with each other. The research focused on disease-resistant breeding in critically ill patients and fostered the resistance to these three diseases Of new varieties of high yield corn, and has achieved fruitful results. Scientists have reached a consensus that developing high yield and disease resistant varieties resistant to the above three pathogens is the most economical and effective measure for preventing and controlling the three major diseases of corn. Two major corn pests corn borer and dark beetle. Especially corn borer, such as early corn borer moth damage, often resulting in leaf row holes and lead to adult plant lodging and nutrient delivery blocked. Corn dark chafer often cluster damage, will bite corn stalks