4个直立叶型杂交种、3个种植行距(67cm等行条播、50 cm等行条播、六角形穴播)、3个密度(6.0万株/hm²、7.5万株/hm²、9.0万株/hm²)的田间试验结果表明:影响玉米产量潜力提高的主要因素是密度,其次为行距,再次为品种;在试验实施的密度、行距、品种各因素处理中,玉米杂交种产量均随密度的增大而增加,玉米营养面积随密度的增大而变小。

The result of field experiment with 4 leaf straight-up type maize hybrids．3 planting models r50 ClIl distance between rows，6-angle shape，67 ClIl distance between rows)，3 densites(60 000 plants／ha，75 000 plants／ha．90 000 plants／ha)indicated：The first main factor which affect maize yield potential developing is density；Thesecond is distance between rows；The third is variety-under this experimental conditions；The yield of maize hybridsis increasing as density increasing，the maize nutrient area is decreasing as density increasing.

陕西省农发办重点推广项目资助