去年,不少地方反映玉米叶色变深,植株萎缩不长的问题,并询问玉米得了什么病,有没有办法防治。我们到反映强烈的地区进行了实地调查。明确去年玉米上发生的是玉米粗缩病。麦套玉米发生重,晚播的较轻。估计我省去年发生1000余万亩。玉米粗缩病是由灰飞虱传播的一种病毒病害。灰飞虱在带毒植株 Last year, many places reflected the darkening of corn leaf color, the problem of the plant shrinking not long, and asked what diseases the corn had. There was no way to prevent it. We conducted a field survey in a highly-reflected area. It was clear that corn maize was contracting last year. Maize corn heavy, late broadcast light. It is estimated that more than 1,000 mu of land in our province occurred last year. Corn rough is a virus disease transmitted by the planthopper. Laodelphax striatellus in infected plants