目前辽宁省玉米大、小斑病已基本得到控制,但近几年玉米丝黑穗病、瘤黑粉病、青枯病、灰斑病、弯孢菌叶斑病、顶腐病和病毒病等病害发生普遍,且日趋严重,逐渐成为生产上的主要病害。为提高品种的抗病性,把病害为害降低到最低程度,在玉米育种上各学科要加强合作,联合攻关。要拓宽选育品种的遗传基础,增强抗病基因的多样性。要明确抗病育种目标,培育水平抗性品种。在生产上要采用抗病品种,并注意品种搭配及合理布局。 At present, large and small spot of maize in Liaoning Province have basically been controlled, but in recent years, maize smut, nematode, bacterial wilt, leaf spot, Curvularia leaf spot, top rot and virus disease The occurrence of other diseases is widespread and increasingly serious and has gradually become the major disease in production. In order to improve the disease resistance of the varieties, reduce the disease damage to a minimum, all disciplines in maize breeding should strengthen cooperation and joint research. To broaden the genetic basis of breeding varieties and enhance the diversity of resistance genes. To clear the goal of disease-resistant breeding, cultivate the level of resistant varieties. In the production of resistant varieties should be used, and pay attention to varieties with a reasonable layout.