玉米密植和营养改良之研究——Ⅰ.密度对玉米产量和营养的效应  

Study on Close Planting and Nutrient Improvement of Maize Ⅰ.Effect of Density to Yield and Nutrition of Maize

作　　者：张永科[1] 孙茂 张雪君 吴金平 何仲阳 马永平[1] 

机构地区：[1]西北农林科技大学农学院,陕西杨凌712100 [2]河北隆化三北种业育种中心,河北隆化068150

出　　处：《玉米科学》2005年第3期87-90,共4页Journal of Maize Sciences

基　　金：陕西省农发办重点推广项目资助

摘　　要：4个直立叶型杂交种、3个种植行距穴67cm等行条播、50cm等行条播、六角形穴播雪、3个密度穴6.0万株/hm2、7.5万株/hm2、9.0万株/hm2雪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 （50 cm distance between rows, 6-angle shape, 67 cm 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; The second is distance between rows; The third is variety under this experimental conditions; The yield of maize hybrids is increasing as density increasing, the maize nutrient area is decreasing as density increasing.

关 键 词：玉米 产量潜力 密度 

分 类 号：S513.042[农业科学—作物学]