玉米粗缩病(MRDV)是玉米的毁灭性病害。本文前部分就其病状、分布、寄主范围、病原、传播方式及特点、分子生物学研究和防治法进行了系统全面的介绍。 玉米鼠耳病(MWEV)最早(1910)年在澳大利亚报道,以后在几内亚、埃及和印度也有类似报道。本文的后部分就其症状类型、寄主、病原、传播和防治法进行了介绍。 Corn rough (MRDV) is a devastating disease of corn. In the first part of this paper, we systematically introduced the symptoms, distribution, host range, pathogens, modes of transmission and characteristics, molecular biology research and prevention and treatment methods. The earliest case of corn ear disease (MWEV) was reported in Australia in 1910, and later reported in Guinea, Egypt and India. The latter part of this article describes the types of symptoms, host, pathogen, transmission and prevention methods.