徐州地区玉米粗缩病的发生原因及防治措施

玉米粗缩病是由灰飞虱传播引起的一种病毒病,对玉米危害很大,一般发病田块减产20%~30%,严重的达50%以上。近年来该病在徐州市发生普遍,尤其是2008年,大蒜茬夏玉米粗缩病发生较重,造成部分田块严重减产。通过对玉米粗缩病发生的原因及主要症状进行分析,结合徐州地区的实际情况及玉米粗缩病的发生规律,提出了综合防治措施,以期为指导当地玉米生产提供可靠依据。

Causes and Prevention Measures of Maize Rough Dwarf Disease in Xuzhou District

The maize rough dwarf disease,which does great harm to the growth of maize,is caused and transmitted by small brown planthoppers.The yield of maize is usually reduced by 20%-30%.In some seriously affected regions,the yield of maize can even be reduced by over 50%.The disease is widely spread in recent years in those maize fields where garlic was the precious crop,causing great damage to maize production.Analyses were made on the causes,main symptoms of maize rough dwarf disease,and the integrated control measures were proposed.