近年来,我国北方一年两作区小麦、玉米一体化亩产吨粮栽培模式的兴起为大上粮食提供了新的思路和途径。把冬小麦夏玉米上下两茬作为一个统一的生产系统进行调控,以全年高产出为着眼点,强化土地的整体功能,统筹安排农艺措施,协调上下茬之间的矛盾,合理投入,充分利用自然资源,实现高投 In recent years, the emergence of the two-cropping system of grain and grain cultivation per mu of wheat and corn integrated in the northern part of the country in the year of last year has provided new ideas and approaches for foodstuffs growing from one grain to another. The upper and lower stubble of winter wheat and summer maize as a unified production system regulation, the annual high yield as the focus, to strengthen the overall function of the land, co-ordinate arrangements for agronomic measures, coordination of the contradiction between upper and lower crop, reasonable investment, make full use of Natural resources, high investment