【作者】 周旭梅； 高旭东； 何晶；

【Author】 ZHOU Xu-mei,GAO Xu-dong,HE Jing (Dandong Academy of Agricultural Sciences,Liaoning Fengcheng 118109)

【机构】 丹东农业科学院；

【摘要】 试验以多抗较耐密玉米品种丹玉86号和高抗耐密玉米新组合丹3363为试验材料,研究了种植密度对产量及相关植株性状的影响。结果表明,丹玉86号产量与密度呈二次回归方程的关系,在60000株/hm~2的密度下产量最高。丹3363在75000株/hm~2的密度下产量最高,在52500株/hm~2的密度下产量最低。株高、穗位高、茎粗、叶片数、棒三叶长随密度变化不明显。丹玉86号在60000株/hm~2密度下棒三叶宽、棒三叶面积最大,丹3363棒三叶宽、棒三叶面积随密度增加而降低。丹玉86号和丹3363倒伏率和空秆率都随密度增加呈上升趋势。更多还原

【Abstract】 The multiple resistance and high - density tolerance maize hybrid Danyu86 and high resistance and high - density tolerance maize combination Dan3363 were studied under different planting densities to investigate the effects on yield and its related plant characters of plant - densities.The results showed that the relationship of yield of Danyu86 and density were conformed to quadratic regression equation,and the highest yield of Danyu86 was in the density of 60000 plant/ hm2.The highest yield of Dan3363 was in the density of 75000 plant / hm2,and the lowest yield was in the density of 52500 plant / hm2.Plant height,ear height,stem diameter, leaf number,and three - ear - leaf length were not significant varied with the changes of planting densities.The largest three - earleaf width and three - ear - leaf area of Danyu86 were in the density of 75000 plant / hm2,and the three - ear - leaf width and three-ear - leaf area of Dan3363 were reduced with density increasing.Lodging percentage and empty stalk rate of Danyu86 and Dan3363 were increased with density increasing.更多还原