玉米是我省重要秋粮作物之一,常年种植面积2500万亩以上,产量占秋粮总产的50％左右,不少县区达70％以上。近年来随着生产条件的改变,栽培技术的优化,单产、总产都有不同程度的提高,在全省范围内出现了不少千亩亩产500公斤;万亩亩产400公斤和小面积亩产750公斤以上的高产典型。但就全省而言,玉米产量仍是中低产水平。近几年来,玉米单产一直在225公斤左右徘徊,这与我省的自然优势和生产条件不相适应,没有发挥玉米高产的潜能。玉米是个四碳作物,具有生育期短、光能利用率高、肥水效应显著、增产潜力大的特点,它不仅是发展畜牧业的饲料之王,而 Corn is one of the important autumn crops in our province. The annual planting area is more than 25 million mu and the output accounts for about 50% of the total output of autumn cereals, with more than 70% in many counties. In recent years, with the change of production conditions, optimization of cultivation techniques, yield and total output have been improved in varying degrees. A lot of 500 mu of mu yield has emerged in the whole province; 400 kg of mu yield and a small area Yields more than 750 kilograms of high-yield typical. However, as far as the province is concerned, corn production is still at the middle-low yield level. In recent years, corn yield has been hovering around 225 kilograms, which is incompatible with the province’s natural advantages and production conditions, and has not shown the potential of high yield of corn. Corn is a four-carbon crop and has the characteristics of short growth period, high utilization rate of light energy, significant water and fertilizer effect and great yield potential. It is not only the king of animal husbandry feed,