与单作相比，套作玉米应适当增加植株密度。
The density of cropping corn should be reasonably increased, compared to the monocropping corn.
1985年进行的玉米与苜蓿机械化套作栽培的研究，为新疆大力发展玉米、苜蓿生产提供了一条良好的途径。
The study of mechanical interplanting of corn and lucern carried out in 1981-1985 has provided a good way to develop corn and lucern production on a large scale in Xinjiang.
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