| 强化栽培对杂交中稻籽粒充实度的影响及其与源库结构的关系 |
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| 引用本文： | 徐富贤,熊洪,朱永川,谢戎,王贵雄.强化栽培对杂交中稻籽粒充实度的影响及其与源库结构的关系[J].中国水稻科学,2004,18(6):522-526. |
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| 作者姓名： | 徐富贤 熊洪 朱永川 谢戎 王贵雄 |
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| 作者单位： | 四川省农业科学院 水稻高粱研究所， 四川 泸州 646000 |
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| 基金项目： | 农业部农业结构调整重大技术研究专项(20030101B)，四川省青年基金资助项目(03ZQ026070)，四川省水稻攻关后补助资助项目，泸州市农业科技资助项目 |
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| 摘 要： | 以18个杂交中稻组合为材料，分别进行强化栽培和传统栽培两组试验，研究了源库结构与强化栽培的籽粒充实度之间的关系。结果表明，强化栽培的籽粒充实度与组合的着粒数关系密切，不同组合强化栽培与传统栽培籽粒充实度的差值（强化栽培-传统栽培）分别与强化栽培和传统栽培下各组合相应的着粒数呈极显著负相关。尽管在强化栽培条件下所有组合穗子变大使其叶粒比均有所下降，但中小穗型组合仍有足够的光合源保证籽粒的正常灌浆结实。与此相反，大穗型组合在强化栽培条件下因库的增大使源库矛盾进一步加剧，致使结实率、充实率和充实指数较传统栽培显著降低。在四川南部中稻区，传统栽培条件下的着粒数不超过173粒的中小穗型组合可作为强化栽培选择品种的参考指标。
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| 关 键 词： | 杂交水稻 强化栽培 栽培方式 源库结构 |
| 文章编号： | 1001-7216(2004)06-0522-05 |
| 收稿时间： | 1900-01-01; |
Effect of the System of Rice Intensification on Grain Plumpness in Association with Ratio of Source to Sink in Mid-Season Hybrid Rice |
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| XU Fu-xian,XIONG Hong,ZHU Yong-chuan,XIE Rong,WANG Gui-xiong.Effect of the System of Rice Intensification on Grain Plumpness in Association with Ratio of Source to Sink in Mid-Season Hybrid Rice[J].Chinese Journal of Rice Science,2004,18(6):522-526. |
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| Authors: | XU Fu-xian XIONG Hong ZHU Yong-chuan XIE Rong WANG Gui-xiong |
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| Institution: | Rice and Sorghum Institute; Sichuan Academy of Agricultural Sciences; Luzhou 646000; China |
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| Abstract: | The grain plumpness under two cultivated methods (t he system of rice intensification and traditional cultivation) was investigated using 18 mid-season hybrid rice combinations. There existed a highly signi ficant negative correlation between the difference of grain plumpness under th e two cultivated methods and spikelets per panicle. The small- or middle-pa nicle hybrid rice though they showed significant decrease in leaf-grain ratio under the system of rice intensification maintained normal grain fill ing due to plenty of source supply, while the big-panicle hybrid rice was on the contrary. It suggested that spikelets per panicle less than 173 under traditional cultivation, was a index for selecting variety in applying the sys tem of rice intensification in the southern region of Sichuan Province. |
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| Keywords: | hybrid rice the system of rice intensification cul tivation method ratio of source to sink grain plumpness |
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