| 种植密度对超级杂交中稻产量和群体质量的影响 |
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| 引用本文： | 周建群,吴朝晖.种植密度对超级杂交中稻产量和群体质量的影响[J].湖南农业科学,2009(8):18-20,23. |
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| 作者姓名： | 周建群 吴朝晖 |
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| 作者单位： | 1. 湖南省农业科学院科技情报研究所,湖南,长沙,410125
2. 国家杂交水稻工程技术研究中心,湖南,长沙,410125 |
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| 基金项目： | 国家科技支撑计划(2006BAD02A13):湖南省"十一五"农业重大专项 |
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| 摘 要： | 以超级稻两优0293、GDS/RB207为材料,研究了4种密度对水稻高产栽培产量、产量结构及其叶面积组成的影响.结果表明:在低密度下群体产量随密度的增加而迅速提高;由适宜密度达到最高点后,进一步增大密度,产量便开始下降.叶面积LAI随密度的增大而增大,而有效、高效叶面积率随密度的增大而减少.其中两优0293、GDS/RB207适宜密度分别为8 000株/667m2(27 cm×25 cm)、10 000株/667m2(25 cm×26.5 cm)能获得高产.
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| 关 键 词： | 超级稻 高产栽培 密度 叶面积组成 |
Effects of Planting Density on Yield and Populations Quality of Mid-season Super Hybrid Rice |
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| ZHOU Jian-qun,WU Zhao-hui.Effects of Planting Density on Yield and Populations Quality of Mid-season Super Hybrid Rice[J].Hunan Agricultural Sciences,2009(8):18-20,23. |
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| Authors: | ZHOU Jian-qun WU Zhao-hui |
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| Institution: | 1.Institute of Scientific & Technical Information;Hunan Academy of Agricultural Sciences;Changsha 410125;PRC;2.China National Hybrid Rice R&D Center;PRC |
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| Abstract: | Super hybrid rice Liangyou 0293 and GDS/RB207 were used as experimental materials to study the effects of four different planting densities on yield,yield components and leaf area composition.The results showed that the yield rapidly enhanced with increasing planting density under the condition of low planting density,and then it would be decreased when the planting density further increased after the optimum planting density reached to a peak.The leaf area index(LAI) increased with planting density increas... |
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| Keywords: | super hybrid rice high-yield culture planting density composition of leaf area |
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