玉米是主要粮食作物,在许多地区为主栽作物,栽培面积大。随着栽培年限的延长以及其品种的不断增加,使得玉米发生病虫害的程度逐渐加重,很多的玉米出现严重的玉米螟、红蜘蛛、粗缩病等病害,对玉米生长造成了很大影响。该文阐述了这些病害的特征及影响因素,最后还提出了一些具体预防和处理的方法。 Corn is a staple food crop and is a major crop in many areas with large cultivation areas. With the extension of the cultivation years and the continuous increase of its varieties, the degree of occurrence of pests and diseases of corn has been gradually aggravated. Many corn diseases such as corn borer, spider mite, and cuneata have a great impact on the growth of maize. This paper describes the characteristics and influencing factors of these diseases, and finally puts forward some specific prevention and treatment methods.