wheat streak mosaic

例句：

1. 1. Thefarmer noticed the wheat streak mosaicon his field.
   农民注意到了他的田地上的小麦条纹花斑病。
2. 2. Thedisease is a major threatto the wheat crop in thisregion.
   这种疾病是该地区小麦作物的主要威胁。
3. 3. The farmers are trying to control thespread of the wheat streak mosaic.
   农民们正在试图控制小麦条纹花斑病的传播。