三、春小麦美国春小麦种植面积较小,仅占20％左右。集中产区为北部春麦区,其他地区很少。美国北部春麦区以生产优质的红皮硬质春小麦和硬粒小麦而著称。该区的气候条件和土壤状况对生产高蛋白、强面筋的小 Third, the spring wheat The United States spring wheat planting area smaller, only about 20%. Centrally-populated areas are northern spring wheat areas, with few other areas. The northern part of the United States is known for producing high-quality hard-red spring wheat and durum wheat. The climatic conditions and soil conditions in this area are small for the production of high-protein, gluten-rich