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紧凑型玉米系指穗位上叶与茎秆角度小于45度,叶片直立上冲;上部叶短,中部叶长,下部叶短,整个植株呈棱形。这种株型的玉米,比平展型玉米增产的原因是:密度增加。平展型玉米一般亩保苗3500～4500株;紧凑型玉米亩保苗可达4500～5500株,有的组合甚至可以达到6500株。
Compact corn refers to the ear position on the leaves and stalks angle less than 45 degrees, the leaves upright punches; upper leaves short, the middle leaves long, the lower leaves short, the entire plant was prismatic. This plant type of corn, more than the flattening corn yield is due to: increased density. Flat-type corn seedlings generally 3500-4,500 acres of seedlings; compact corn seedlings up to 4500 ~ 5500 acres, and some combinations even up to 6500 strains.