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玉米粗缩病是由玉米粗缩病毒(MRDV)引起的一种玉米病毒病。是由灰飞虱以持久性方式传播的,玉米粗缩病是我国北方玉米生产区流行的重要病害之一,发生比较普遍,严重的地块发病率可达50%以上,已经成为制约玉米产量进一步提高的重要因素,应引起高度重视。 1 玉米粗缩病的症状及危害 1．1 玉米粗缩病的危害症状感染玉米粗缩病毒的植株叶片短宽僵直,叶色浓绿,节间缩短,植株明显低于正常植株,顶部叶片族生呈君子兰状, 叶背、叶鞘以及苞叶的叶脉上具有粗细不一的蜡白色条状突起,有明显的粗糙感,雄穗退化,分支减少,雌穗畸形,严重时不结实,减产严重。
Corn maize is a corn virus disease caused by maize rough virus (MRDV). Is transmitted by the Laodelphax striatellus in a persistent manner. Maize is one of the most prevalent diseases in the maize production area in northern China. The incidence of maize is more than 50% Important factors for further improvement should be given high priority. 1 Symptoms and Harm of Maize Rough Syndrome 1.1 The Harmful Characters of Maize Roughcastle The leaves of maize rough infected virus are short and wide, the leaf color is dark green, the internodes are shortened, and the plants are obviously lower than the normal plants. The top leaf family Health was a gentle blue-like, leaf dorsal, leaf sheaths and bracts leaf veins with different thickness of the wax white bar-shaped protrusions, a clear sense of roughness, tassel degradation, branch reduction, ear malformations, severe, not strong, serious production cuts .