| 中熟高产玉米杂交种主要农艺性状演变规律的研究 |
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| 引用本文： | 史新海,王广明.中熟高产玉米杂交种主要农艺性状演变规律的研究[J].作物学报,1996,22(6):750-756. |
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| 作者姓名： | 史新海 王广明 |
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| 作者单位： | 莱阳农学院,山东莱阳,265200 |
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| 摘 要： | 通过对山东省１９７６￣１９９５年中熟玉米高产杂交种主要农艺性状的分析，认为中熟高产玉米杂交种产量的提高，主要由于选育了紧凑型品种而增加了密度（公顷株数和公顷穗数）、公顷粒数和提高了籽粒千粒重；１９７６￣１９９５年中熟高产玉米杂交种主要农艺性状的演变规律是，公顷产量、公顷株数、公顷穗数、公顷粒数和千粒重等性状呈上升趋势，穗长呈下降趋势，穗行数、穗粒数、株高、穗位高、大斑病、小斑病和生育期等性状则变化
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| 关 键 词： | 玉米 高产杂交种 农艺性状 演变规律 |
| 收稿时间： | 1995-04-14 |
| 修稿时间： | 1995-11-09 |
Studies on Development Rule for Major Agronomic Characters of Maize Hybrid in Mid-maturation and High-yield |
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| Shi Xinhai,Sui Fanggong,Song Zaihua.Studies on Development Rule for Major Agronomic Characters of Maize Hybrid in Mid-maturation and High-yield[J].Acta Agronomica Sinica,1996,22(6):750-756. |
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| Authors: | Shi Xinhai Sui Fanggong Song Zaihua |
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| Institution: | Laiyang Agricultural College,Shandong,Laiyang,265200 |
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| Abstract: | By analysising major agronomic characters of high-yield and mid-maturation maize hybrid in Shandong province among 70's-90's, we found that the main reason for the increase of yield in mid-maturation and high-yield maize hybrid was the increase in the density (plant and ear numbers per ha), grain numbers per ha and 1000 seed weight by selecting compact-structure varieties. The development rule was that, the characters such as yield/ha, plant numbers/ha, ear number/ha, grain numbers/ha and 1000 seed weight tend to rise, but the length of ear tends to decrease, there were no regularity in row number/ear, grain number/ear, plant height, ear position, leaf spot and growth stage. So the main goal for maize breeding in mid-maturation and high-yield is to select the plant with large grain and compact-structure. |
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| Keywords: | Maize High-yield hybrid Agronomic character Development rule |
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