一、前言玉米和豆菽作物间混作栽培在我国许多地区甚为普遍。例如东北各省有一半以上的玉米播种面积是和大豆间作栽培的;据河北省39个县的统计,玉米单作栽培仅占15%,间作栽培占46%,混作栽培占38%。生产实践赶明:玉米和豆菽作物间混作栽培可以稳定和提高单位 I. INTRODUCTION Mixed cropping of corn and legume crops is very common in many areas of our country. For example, more than half of the sown areas in northeastern provinces were planted with soybeans. According to the statistics of 39 counties in Hebei Province, only 15% of maize monoculture, 46% of intercropping and 38% of mixed cultivation were planted. Production practice catch-up: mixed cultivation of corn and bean curd crops can be stable and improve the unit