mealy-bug wilt

例句：

1. 1.The mealy-bug wilt has been a major problem in the region's crops.
   麦蚜枯萎病一直是该地区农作物的主要问题。
2. 2.The farmers are trying to control the mealy-bug wilt by using resistant varieties of wheat.
   农民们正在尝试通过种植抗麦蚜枯萎病的小麦来控制这种病害。
3. 3. The mealy-bug wilt is a devastating disease that can cause significant crop losses.
   麦蚜枯萎病是一种毁灭性的疾病，可以导致重大的农作物损失。