小麦、玉米是我国北方地区的主要粮食作物,在当前生产上的主攻目标是实行一年两作提高单位面积产量,达到高产、稳产、低成本的目的。但在较长的时期内,因对两季作物的茬口安排、系统的栽培技术研究较少,经常出现“夏增秋减”或“秋增夏减”波浪式发展的现象。为了扭转这种局面,加 Wheat and corn are the main food crops in the northern part of our country. The main objective of the current production is to increase the yield per unit area and achieve the goal of high yield, stable yield and low cost. However, for a long period of time, due to the arrangement of stubble crops in the two seasons, systematic research on cultivation techniques is rare, and the phenomenon of wave development such as “increasing summer and decreasing autumn” or “increasing, decreasing, decreasing, decreasing” often occurs. In order to reverse this situation, add