| 种植密度对玉米产量及植株性状的影响 |
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| 引用本文： | 周旭梅,高旭东,何晶.种植密度对玉米产量及植株性状的影响[J].玉米科学,2012,20(3):107-110. |
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| 作者姓名： | 周旭梅 高旭东 何晶 |
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| 作者单位： | 丹东农业科学院,辽宁凤城,118109 |
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| 基金项目： | 农业部“948”项目[2006-G8(8)-1] |
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| 摘 要： | 以多抗较耐密玉米品种丹玉86和高抗耐密玉米新组合丹3363为试验材料,研究种植密度对产量及植株性状的影响。结果表明,丹玉86产量与密度呈二次回归方程的关系,在60 000株/hm2密度下产量最高;丹3363在75 000株/hm2密度下产量最高,在52 500株/hm2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在60 000株/hm2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和丹3363倒伏率和空秆率均随密度增加呈上升趋势。
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| 关 键 词： | 玉米 种植密度 产量 植株性状 |
| 收稿时间： | 2011/11/15 0:00:00 |
Effects of Planting Density on Yield and Plant Characters of Maize Hybrids |
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| ZHOU Xu-mei,GAO Xu-dong and HE Jing.Effects of Planting Density on Yield and Plant Characters of Maize Hybrids[J].Journal of Maize Sciences,2012,20(3):107-110. |
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| Authors: | ZHOU Xu-mei GAO Xu-dong and HE Jing |
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| Institution: | (Dandong Academy of Agricultural Sciences,Fengcheng 118109,China) |
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| 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 60 000 plants/ha. The highest yield of Dan3363 was in the density of 75 000 plants/ha, and the lowest yield was in the density of 52 500 plants/ha. 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-ear-leaf width and three-ear-leaf area of Danyu86 were in the density of 75 000 plants/ha, 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. |
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| Keywords: | Maize Planting density Yield Plant character |
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