麦茬复种夏玉米,是华北平原常见的种植方式。它具有高产、省工和便于机械化等优点,符合农村商品化和专业化生产的发展方向,面积日益扩大。为发挥夏玉米的增产潜力,我们于1978年开始对它的生育规律进行了系统观察,并在此基础上进而研究其高产生育模式及控制措施。 Wheat stubble multiple summer maize, is a common planting in the North China Plain. It has the advantages of high yield, labor saving and mechanization, which is in line with the development direction of rural commercialization and specialized production, and its area is expanding day by day. In order to make full use of potential yield of summer maize, we started to systematically observe its fertility regulation in 1978, and on this basis, we further studied its high yield fertility mode and control measures.