| 高海拔地区玉米种植密度研究 |
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| 引用本文： | 高明文,张祯勇,陈代全,肖启银.高海拔地区玉米种植密度研究[J].中国农学通报,2011,27(9):287-290. |
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| 作者姓名： | 高明文 张祯勇 陈代全 肖启银 |
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| 作者单位： | 甘孜州农科所,四川康定,626000 |
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| 摘 要： | 此试验在特定高海拔地区宽窄行栽培模式下，通过选用一个中杆中熟种（元玉3号）和一个高杆中晚熟种（正红311），设计了5.25、6、6.75、7.5、8.25万株/hm2 5个种植密度，研究了不同种植密度对玉米植株农艺性状（茎粗、株高、穗位高、折倒伏率等）和产量构成因素（穗数、穗粒数、千粒重）的影响。结果表明：株高、穗位高、穗高系数、折倒伏率随密度的增加呈增加趋势；而茎粗、穗粒数和千粒重随密度的增加呈下降趋势；有效穗数和产量随密度的增加呈先增后减的抛物线变化趋势。在此试验条件下及其类似生态区，元玉3号种植密度为7.19万株/hm2时，产量可达最高期望值12430.9 kg/hm2；正红311种植密度为6.84万株/hm2时，产量可达最高期望值12773.39 kg/hm2。
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| 关 键 词： | 芦笋 芦笋 性别 化学鉴定 |
| 收稿时间： | 9/5/2010 12:00:00 AM |
| 修稿时间： | 2010/9/30 0:00:00 |
Study on Planting Density of Corn hybrid in High Elevation Region |
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| Gao Mingwen,Zhang Zhenyong,Chen Daiquan,Xiao Qiyin.Study on Planting Density of Corn hybrid in High Elevation Region[J].Chinese Agricultural Science Bulletin,2011,27(9):287-290. |
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| Authors: | Gao Mingwen Zhang Zhenyong Chen Daiquan Xiao Qiyin |
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| Institution: | Gao Mingwen,Zhang Zhenyong,Chen Daiquan,Xiao Qiyin(Agricultural Sciences Research Institute of Ganzi District,Kangding Sichuan 626000) |
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| Abstract: | In this study,two corn hybrids,' Yuanyu 3 ' of mid-maturing and medium-stem,' Zhenghong 311 ' of late-maturing and high-stem,were used to study the effects of agronomic traits(such as stem diameter,plant height,ear height and lodging discount rate) and yield components(such as ears number,kernels per ear,1000-kernel weight) under different planting densities(52500,60000,67500,75000,82500 plants/hm 2).Treatments were arranged in a wide-narrow-row cultivation model in high elevation region.The results showed ... |
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| Keywords: | corn plant density |
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