玉米在我县常年播种面积5万亩以上,占粮田总播种面积的16％左右。产量多年平均在1,100万斤以上,约占全县总产的四分之一,是仅次于小麦的第二大作物。在全国玉米区划中,我县属北方春玉米一年一作区,气候温和、雨量适中,为玉米栽培适生区。但由于地处黄土高原残塬沟壑区,地形复杂,气候受地形影响而差异明显。因此,根据玉米栽培气候特征,进行合理的种植区划,因地制宜安排面积,合理布局品种,充分利用气候资源,扬长避短,是发挥玉米高产优势的重要途径之一。 Maize perennial planting area in my county more than 50000 acres, accounting for about 16% of the total sown area of ​​grain. The output has averaged more than 11 million kilos for many years, accounting for about one fourth of the county’s total output and the second largest crop after wheat. In the national corn zoning, the county belongs to the northern spring corn one area a year, a mild climate, moderate rainfall, corn cultivation suitable area. However, due to the fact that it is located in the gully area on the Loess Plateau of the Loess Plateau, the terrain is complex and the climate is obviously affected by the terrain. Therefore, according to the characteristic of maize cultivation climate, it is one of the important ways to give play to the superiority of maize by carrying out reasonable planting zoning, arranging the area according to the local conditions, arranging the varieties reasonably, making full use of the climate resources and avoiding weaknesses.