hard red and durum spring wheat

例句：

1. 1.The hard red and durum spring wheat are used to make flour for baking bread.
   硬质红麦和硬质春小麦被用来制作面包的面粉。
2. 2. Hard red and durum spring wheat are a staple crop in the Midwest.
   硬质红麦和硬质春小麦是中西部的主要农作物。
3. 3. The hard red and durum spring wheat is grown in the fields of the United States.
   硬质红麦和硬质春小麦在美国的田野里种植。