河西走廊地处西北内陆地区,具有丰富的光热资源、良好的土壤和灌溉条件、隔离条件以及交通运输条件。近年来玉米制种面积不断扩大,其中2004年制种7.4万 hm~2,产种量4亿 kg,其产量占全国一半以上,成为我国主要玉米制种基地。由于走廊沙漠沿线区较走廊中部传统农业区气候生态条件恶劣,但热量及隔离条件更好,因此该区域制种面积扩大很快。在该地区玉米高产优质制种的技术如下: Hexi Corridor is located in the inland northwest, with rich light and heat resources, good soil and irrigation conditions, isolation conditions and traffic conditions. In recent years, the area of ​​maize planting has been continuously expanding, of which 74,000 hm ~ 2 were planted in 2004 and the output was 400 million kg. The output of maize accounted for more than half of the country’s total and it has become the major base for seed production of maize in China. Due to the harsh climatic and ecological conditions of the traditional agricultural areas along the corridor deserts in the central part of the corridor, the heat and isolation conditions are better, so the seed production area in this area is expanding rapidly. The technology for producing high-quality and high-quality maize in the area is as follows: