玉米是全球种植范围最广、产量最大的谷类作物,近年来,我国玉米发展势头良好,总体上保持了产需平衡的格局,但产量年际波动较大。从未来发展看,玉米将是我国需求增长最快、也将是增产潜力最大的粮食品种。以黄淮海平原为主的夏播玉米区,种植面积约600多万公顷,约占全国32%,总产约2200万 Corn is the most widely planted cereal crop with the largest output in the world. In recent years, the development of maize in our country has maintained a good momentum and maintained a balanced pattern of production and demand as a whole. However, the yield fluctuated greatly from year to year. From the perspective of future development, corn will be the fastest growing demand in our country and will also be the largest grain variety with the potential to increase production. The summer sowing corn area, mainly of the Huang-Huai-Hai Plain, has a planting area of ​​about 6 million hectares, accounting for 32% of the national total, with a total output of about 22 million