针对我省北方无霜期短,城镇附近农村人均耕地面积少,人、物力较集中的情况下设计出一种玉米混种菜豆角,间种马铃薯、亚麻,复种白菜的立体栽培模式。试验结果为:此模式种植产出与投入比由单作的1.63～2.16︰1提高到2.38︰1,其效益是单作田的2.58～3.15倍。 In view of the short frost-free period in the northern part of our province and the small per capita arable land area in rural areas near the towns and townships, people and material resources are more concentrated, a three-dimensional cultivation pattern of corn mixed seeds and beans, flax and compound cabbage was designed. The result of experiment is as follows: The output of this mode is increased from 1.63 ~ 2.16︰1 to 2.38︰1, and its benefit is 2.58 ~ 3.15 times than that of monoculture.