| 不同株型粳稻品种的冠层特征和物质生产关系的研究 |
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| 引用本文： | 陈温福,徐正进.不同株型粳稻品种的冠层特征和物质生产关系的研究[J].中国水稻科学,1991,5(2):67-72. |
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| 作者姓名： | 陈温福 徐正进 |
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| 作者单位： | 沈阳农业大学，沈阳农业大学，沈阳农业大学，沈阳农业大学 沈阳 110161，沈阳 110161，沈阳 110161，沈阳 110161 |
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| 基金项目： | 国家自然科学基金，“七五”科技攻关课题 |
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| 摘 要： | 对不同株型粳稻品种的冠层特征与群体物质生产和产量的关系进行了研究。结果表明，品种的株型不同，对肥力的反应不同，冠层发展动态和干物质生产速度亦有明显差异．表现为随着肥力水平的提高，不同株型品种同抽穗前叶面积增长速度的差异减小，抽穗后叶面积衰减速度的差异增大。抽穗期的LAI与抽穗后群体干物质生产速度和产量之间呈二次曲线回归关系，获得最高产量的最适LAI与获得最大干物质生产速度的最适LAI基本上是一致的，抽穗后群体干物质生产速度与产量之间亦呈现出极显著的正相关。
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| 关 键 词： | 粳稻 株型 叶面积指数 冠层 干物质生产 |
| 收稿时间： | 1900-01-01; |
Studies on Canopy Properties and Its Relation to Dry Matter Production in Japonica Rice Varieties with Different Plant Types |
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| CHEN Wenfu,XU Zhengjin,ZHAN Longbu,YANG Shouren Shenyang Agricultural University,Shenyang.Studies on Canopy Properties and Its Relation to Dry Matter Production in Japonica Rice Varieties with Different Plant Types[J].Chinese Journal of Rice Science,1991,5(2):67-72. |
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| Authors: | CHEN Wenfu XU Zhengjin ZHAN Longbu YANG Shouren Shenyang Agricultural University Shenyang |
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| Institution: | CHEN Wenfu,XU Zhengjin,ZHAN Longbu,YANG Shouren Shenyang Agricultural University,Shenyang 110161 |
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| Abstract: | Using japonica rice varieties with different plant types, studies were made on canopy proper-ties in relation to dry matter production and yield. The results show that varieties responsiveness to nitrogensupply varied with plant types, and there were significant differences in the canopy development and the rateof dry matter production amollg varieties with different plant types. The more was the nitrogen supply, themore the differences of declining rate of leaf area after heading would be, and the less would be the differ-ences of increasing rate of leaf area before heading among varieties with different plant types. The LAI atthe heading stage had a significant quadratic regression relationship with grain yield and the rate of dry mat-ter production after heading.The results also indicate that the LAI leading to maximum grain yield wasbasically consistent with the LAI conductive to maximum rate of dry matter prodriction, and that grain yieldwas positively corelated with the rate of dry matter production after heading. |
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| Keywords: | Japonica rice Plant type Leaf area index Dry matter production Yield |
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