| 郑单22玉米不同种植密度对产量的影响 |
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| 作者姓名： | 张明友 张 新 王振华 张前进 王金召 马巧云 |
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| 作者单位： | 郑州市农科所 郑州450005
(张明友，王金召)，河南农科院粮作所 郑州450002
(张新，王振华，张前进)，郑州市农科所 郑州450005(马巧云) |
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| 基金项目： | 国家粮食丰产工程项目“中产灌区夏玉米高效栽培技术集成与示范”（2004BA520A06-4）. |
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| 摘 要： | 通过不同种植密度对郑单22生长发育及产量影响的研究,郑单22单株叶面积和单株干物质积累量随密度增大而减小。群体叶面积系数和干物质积累量随密度增大而增加,达到一定种植密度后而下降,产量随密度加大而增加,结果表明,郑单22的适宜种植密度为45000~52500株/hm2。
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| 关 键 词： | 玉米 郑单22 密度 产量 |
The Influence of Density on Yield of Zhengdan 22 Maize |
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| Authors: | Zhang Mingyou Zhangxin Wang Zhanghu Zhang Qianjin Wang Jinzhao Ma Qiaoyun |
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| Institution: | 1. Zhenngzhou Institute of Agricultural Sciences, Zhengzhou 450005; 2. Cereal Institute, Henan Acadeny of Agricultural Science, Zhengzhou 450002 |
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| Abstract: | The influence of densities on growth and yield of Zhengdan22 was studied. Leaf area per plant and dry matter accumulation per plant were dropped by densities increasing. Leaf area index and dry matter accumulation were increased by densities increasing and dropped by high densities. The yield was increased with densities increasing. The results showed that the suitable planting density of Zhengdan22 is 45000~52500 plants/hm2. |
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| Keywords: | Maize Zhengdan22 Density Yield |
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